CN106582631B - A kind of stannic acid titanium photochemical catalyst and preparation method thereof, application - Google Patents
A kind of stannic acid titanium photochemical catalyst and preparation method thereof, application Download PDFInfo
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- CN106582631B CN106582631B CN201611234316.2A CN201611234316A CN106582631B CN 106582631 B CN106582631 B CN 106582631B CN 201611234316 A CN201611234316 A CN 201611234316A CN 106582631 B CN106582631 B CN 106582631B
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- 239000010936 titanium Substances 0.000 title claims abstract description 207
- 239000003054 catalyst Substances 0.000 title claims abstract description 79
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 239000002253 acid Substances 0.000 title claims abstract description 75
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 title claims abstract description 37
- 238000002156 mixing Methods 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 45
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 33
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000011591 potassium Substances 0.000 claims abstract description 33
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 33
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 33
- XOLBLPGZBRYERU-UHFFFAOYSA-N SnO2 Inorganic materials O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000003756 stirring Methods 0.000 claims abstract description 28
- 238000001035 drying Methods 0.000 claims abstract description 25
- 238000001354 calcination Methods 0.000 claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 189
- 238000000227 grinding Methods 0.000 claims description 44
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 27
- 239000001257 hydrogen Substances 0.000 claims description 27
- 229910052739 hydrogen Inorganic materials 0.000 claims description 27
- 239000007789 gas Substances 0.000 claims description 25
- 230000015556 catabolic process Effects 0.000 claims description 23
- 238000006731 degradation reaction Methods 0.000 claims description 23
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- 239000012855 volatile organic compound Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 8
- 239000011941 photocatalyst Substances 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims 4
- 238000004519 manufacturing process Methods 0.000 claims 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000003837 high-temperature calcination Methods 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 42
- 230000001699 photocatalysis Effects 0.000 description 28
- 238000012360 testing method Methods 0.000 description 22
- 239000012153 distilled water Substances 0.000 description 21
- 229910052757 nitrogen Inorganic materials 0.000 description 21
- 229910052724 xenon Inorganic materials 0.000 description 21
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 21
- 239000000463 material Substances 0.000 description 7
- 238000007146 photocatalysis Methods 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 1
- 229910003071 TaON Inorganic materials 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/62—Platinum group metals with gallium, indium, thallium, germanium, tin or lead
- B01J23/622—Platinum group metals with gallium, indium, thallium, germanium, tin or lead with germanium, tin or lead
- B01J23/626—Platinum group metals with gallium, indium, thallium, germanium, tin or lead with germanium, tin or lead with tin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
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Abstract
The present invention provides a kind of stannic acid titanium photochemical catalyst and preparation method thereof, application；The preparation method of stannic acid titanium photochemical catalyst of the present invention, this method comprises the following steps: (1) by TiO2And SnO2Mixing is ground, calcining；(2) product for obtaining step (1) is ground, and is mixed with magnesium powder, is calcined afterwards under vacuum；(3) potassium chloroplatinate and water are added in the product that step (2) obtains, stirs, drying, after kept the temperature at 250-350 DEG C in protective gas to get；Preparation method of the present invention is based on high-temperature calcination, by adjusting response parameter, such as TiO2And SnO2Between mol ratio, calcination temperature and calcination time etc. synthesize the stannic acid titanium valve body with different Ti/Sn ratios, then handle to obtain the stannic acid titanium photochemical catalyst with visible light-responded ability (a length of 550nm of maximum absorption wave) using magnesiothermy.
Description
Technical field
The present invention relates to a kind of stannic acid titanium photochemical catalysts and preparation method thereof, application.
Background technique
Photocatalysis has preferable degradation effect to atmosphere pollution, it is considered to be the side of ideal improvement air pollution
One of method.But existing catalyst mainly has effect (namely broad-band gap photochemical catalyst) to ultraviolet light, and ultraviolet light only accounts for
5% or so of sunlight, therefore, solar energy utilization ratio is very low.How effectively visible light part accounts for about 43% in sunlight, therefore
Using visible light be realize photocatalysis control atmosphere pollution the most important condition.
Currently, there is visible light-responded photochemical catalyst to only have: 1) using cadmium sulfide as the sulfide of representative, they are to visible light
There is good absorption effect, photocatalytic activity is also very excellent, but sulfide is unstable, is easy to happen photodissociation, can not be effectively sharp
With；2) photochemical catalyst is adulterated, as TaON element doping can effectively extend the light absorption range of broad-band gap photochemical catalyst to visible
Light area, but the stability of the type photochemical catalyst and photocatalytic activity need to be further increased；3) surface modified light catalyst,
Such as regulate and control photocatalyst surface Lacking oxygen.It is grinding in recent years by the optical response range that the method for hydrogenation regulates and controls photochemical catalyst
Study carefully hot spot, it can expand its optical response range value visible region under the premise of keeping broad-band gap photochemical catalyst photocatalytic activity.
It is mainly at present TiO by the photochemical catalyst with visible light-responded ability that this method regulates and controls2.But by TiO2Material
The limitation of self character, preparation process needs higher reaction temperature or higher hydrogen pressure, due to being related to making for hydrogen
With therefore, higher to the equipment requirement for preparing material.
By testing we have found that TiSnO2Also there is good Photocatalytic activity, while being sent out by magnesium heat, it can be with
Regulate and control its surface oxygen vacancy concentration at a lower temperature.And the work of this aspect is also seldom at present.
Summary of the invention
In view of the drawbacks of the prior art, the present invention provides a kind of stannic acid titanium photochemical catalyst and preparation method thereof, institute of the present invention
It states preparation method and is based on high-temperature calcination, by adjusting response parameter, synthesize the stannic acid titanium valve body with different Ti/Sn ratios, so
It handles to obtain stannic acid titanium photochemical catalyst of the present invention using magnesiothermy afterwards.
Technical solution for achieving the above object is as follows:
The present invention provides a kind of preparation method of stannic acid titanium photochemical catalyst, and this method comprises the following steps:
(1) by TiO2And SnO2Mixing is ground, calcining；
(2) product that step (1) obtains is mixed with magnesium powder, is ground, calcined under vacuum；
(3) in the product that step (2) obtains be added potassium chloroplatinate solution, stir, drying, after in protective gas in
At 250-350 DEG C keep the temperature to get.
Preferably, in the step (1), the TiO2And SnO2Molar ratio be 2-8:8-2；Preferred molar ratio is 2:
8,4:6,5:5,6:4,8:2；Preferred molar ratio is 2:8；
Preferably, the calcination temperature is 1000-1700 DEG C, preferably 1500 DEG C；
Preferably, the calcination time is 5-10h, preferably 10h.
Preferably, in the step (2), the molar ratio of the obtained product of step (1) and magnesium powder is 1:1~1:5,
It is preferred that 1:3；
Preferably, the magnesium powder granularity is 1-10 microns, preferably 3 microns；
Preferably, the vacuum degree is 10-3-10-5Pa, preferably 10-5Pa；
Preferably, the calcination temperature is 250-350 DEG C, preferably 300 DEG C；
Preferably, the calcination time is 2-4h, preferably 3h.
Preferably, in the step (3), the concentration of the potassium chloroplatinate solution is 0.1g/100ml；
Preferably, the ratio of the step (2) obtains product, potassium chloroplatinate solution and water is 1g:0.1-1ml:15-
25ml, preferably 1g:0.5ml:20ml；
Preferably, the mixing time is 20-30h, preferably for 24 hours；
Preferably, the drying is infrared baking；Preferably, the power of the infrared baking is 120W-160W, excellent
Select 150W；
Preferably, the drying temperature is 180-220 DEG C, preferably 200 DEG C；
Preferably, the protective gas is hydrogen；
Preferably, the holding temperature is 280-320 DEG C, preferably 300 DEG C；
Preferably, the soaking time is 2-4h, preferably 3h.
Preferably, the preparation method of the stannic acid titanium photochemical catalyst includes the following steps:
(1) by TiO2And SnO2It with molar ratio 2:8 mixing, grinds, calcines 10h at 1500 DEG C；
(2) it is mixed, is ground, rear vacuum degree 10 with molar ratio 1:3 with magnesium powder after grinding the product that step (1) obtains-5Pa、
3h is calcined at 300 DEG C；
(3) in the product that step (2) obtains be added concentration be 0.1g/100ml potassium chloroplatinate solution, stirring for 24 hours,
The infrared lamp of 150W is dried at 200 DEG C, after kept the temperature at 300 DEG C in hydrogen atmosphere 3h to get；Wherein, the step (2)
The ratio of obtained product, potassium chloroplatinate solution and water is 1g:0.5ml:20ml.
The stannic acid titanium photochemical catalyst that preparation method of the present invention obtains；Preferably, the stannic acid titanium photocatalyst surface
The mass fraction for supporting Pt is 0.1~1%, preferably 0.5%；
Preferably, the stannic acid titanium photochemical catalyst is Pt/TixSnyO2-z, wherein x+y=1,0 < z < 2；Preferably, described
Stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z, wherein 0 < z < 2.
The stannic acid titanium photochemical catalyst and stannic acid titanium photochemical catalyst of the present invention that preparation method of the present invention obtains are dropping
Solve the application in VOC activity；Preferably, the VOC is volatile organic compounds；It is highly preferred that the VOC be formaldehyde and/or
Methanol.
Compared with prior art, this patent at least has technical effect beneficial below.
Preparation method simple process of the present invention, preparation process are easily-controllable, and this method is based on high-temperature calcination, pass through and adjust reaction
Parameter, such as TiO2And SnO2Between mol ratio, calcination temperature and calcination time etc., synthesize have different Ti/Sn ratios stannic acid
Then titanium valve body handles to obtain the stannic acid titanium photochemical catalyst (maximum absorption wavelength with visible light-responded ability using magnesiothermy
For 550nm)；And stannic acid titanium photochemical catalyst of the present invention shows excellent absorbing ability and photocatalysis drop in visible region
Solve volatile organic compounds pollutant, especially formaldehyde activity.
Figure of description
Hereinafter, carrying out the embodiment that the present invention will be described in detail in conjunction with attached drawing.
Fig. 1 is Ti prepared by the present invention0.2Sn0.8O2-xThe photoresponse figure of material；
Fig. 2 is Ti prepared by the present invention0.2Sn0.8O2-xThe XRD diagram of material；
Fig. 3 is Ti prepared by the present invention0.2Sn0.8O2-xThe activity figure of material.
Specific embodiment
The present invention is described below with reference to specific embodiments.It will be appreciated by those skilled in the art that these embodiments are only
For illustrating the present invention, do not limit the scope of the invention in any way.
Experimental method in following embodiments is unless otherwise specified conventional method.Original as used in the following examples
Material, reagent material etc. are commercially available products unless otherwise specified.
Embodiment 1: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 1:9 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.1Sn0.9O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, is ground to and is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.1Sn0.9O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.1Sn0.9O2-xThe concentration that 0.5ml is added in sample is 1g/100ml
Potassium chloroplatinate solution, then add 20ml distilled water, stirring for 24 hours, 200 DEG C of drying under 150W infrared lamp, then by institute
The sample obtained is transferred in tube furnace, is kept the temperature 3h at 300 DEG C under hydrogen atmosphere, is obtained the stannic acid titanium photochemical catalyst Pt/
Ti0.1Sn0.9O2-z, wherein 0 < z < 2.
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.1Sn0.9O2-xSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, in 30min, the degradation rate of formaldehyde is 83.4%.
Embodiment 2: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Potassium chloroplatinate, then adds 20ml distilled water, and stirring for 24 hours, is dried for 200 DEG C, then by resulting sample under 150W infrared lamp
Product are transferred in tube furnace, keep the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/
Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 98.8%.
Embodiment 3: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 4:6 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.4Sn0.6O2Sample；
(2) the yellowish Ti for obtaining step (1)0.4Sn0.6O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.4Sn0.6O2-zSample；
(3) the 1g bottle green Ti0.4Sn obtained in step (2)0.6O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Potassium chloroplatinate, then adds 20ml distilled water, and stirring for 24 hours, is dried for 200 DEG C, then by resulting sample under 150W infrared lamp
Product are transferred in tube furnace, keep the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/
Ti0.4Sn0.6O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.4Sn0.6O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, in 30min, the degradation rate of formaldehyde is 88.2%.
Embodiment 4: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 5:5 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.5Sn05O2Sample；
(2) the yellowish Ti for obtaining step (1)0.5Sn0.5O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.5Sn0.5O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.5Sn0.5O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Potassium chloroplatinate, then adds 20ml distilled water, and stirring for 24 hours, is dried for 200 DEG C, then by resulting sample under 150W infrared lamp
Product are transferred in tube furnace, keep the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/
Ti0.5Sn0.5O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.5Sn0.5O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, in 30min, the degradation rate of formaldehyde is 80.4%.
Embodiment 5: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 6:4 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.6Sn0.4O2Sample；
(2) the yellowish Ti for obtaining step (1)0.6Sn0.4O2 sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.6Sn0.4O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.6Sn0.4O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Potassium chloroplatinate, then adds 20ml distilled water, and stirring for 24 hours, is dried for 200 DEG C, then by resulting sample under 150W infrared lamp
Product are transferred in tube furnace, keep the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/
Ti0.6Sn0.4O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.6Sn0.4O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, in 30min, the degradation rate of formaldehyde is 83.0%.
Embodiment 6: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 8:2 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.8Sn0.2O2Sample；
(2) the yellowish Ti for obtaining step (1)0.8Sn0.2O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.8Sn0.3O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.8Sn0.2O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.8Sn0.2O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.8Sn0.2O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, in 30min, the degradation rate of formaldehyde is 77.3%.
Embodiment 7: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 9:1 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.9Sn0.1O2Sample；
(2) the yellowish Ti for obtaining step (1)0.9Sn0.1O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.9Sn0.1O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.9Sn0.1O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.9Sn0.1O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.9Sn0.1O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, in 30min, the degradation rate of formaldehyde is 90.1%.
Embodiment 8: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 5h at 1500 DEG C；It obtains micro-
Yellow Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 78.8%.
Embodiment 9: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 15h at 1500 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 93.3%.
Embodiment 10: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1000 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 68.8%.
Embodiment 11: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1300 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 77.1%.
Embodiment 12: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1700 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 56.4%.
Embodiment 13: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 98.8%.
Embodiment 14: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 1 micron) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 96.5%.
Embodiment 15: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 5 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 90.1%.
Embodiment 16: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 10 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 88.7%.
Embodiment 17: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 3:1
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 44.5%.
Embodiment 18: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:1
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 66.4%.
Embodiment 19: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:5
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 56.4%.
Embodiment 20: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-3Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% formaldehyde (formaldehyde/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of formaldehyde is 60.4%.
Embodiment 21: the preparation of stannic acid titanium photochemical catalyst of the present invention
(1) by TiO2And SnO2With molar ratio 2:8 mixing, grinding is allowed to be sufficiently mixed, calcines 10h at 1500 DEG C；It obtains
Yellowish Ti0.2Sn0.8O2Sample；
(2) the yellowish Ti for obtaining step (1)0.2Sn0.8O2Sample and magnesium powder (partial size is 3 microns) are with molar ratio 1:3
Mixing, grinding, is allowed to be sufficiently mixed, above-mentioned sample is moved in tube furnace, is evacuated to 10-5Pa is calcined at 300 DEG C
3h obtains bottle green Ti0.2Sn0.8O2-zSample；
(3) the 1g bottle green Ti obtained in step (2)0.2Sn0.8O2-zIt is 1g/100ml's that 0.5ml concentration is added in sample
Then potassium chloroplatinate adds 20ml distilled water, for 24 hours, then 200 DEG C of drying under infrared lamp turn resulting sample for stirring
It moves on in tube furnace, keeps the temperature 3h at 300 DEG C under hydrogen atmosphere, obtain the stannic acid titanium photochemical catalyst Pt/Ti0.2Sn0.8O2-z。
Under xenon lamp irradiation, 100mg Pt/Ti is taken0.2Sn0.8O2-zSample, test its to content be 10% methanol (methanol/
Nitrogen=1:9) mixed gas Photocatalytic activity, as shown in figure 3, in 30min, the degradation rate of methanol is 91.3%.
Specific description of embodiments of the present invention above is not intended to limit the present invention, and those skilled in the art can be according to this
Invention is variously modified or deforms, and as long as it does not depart from the spirit of the invention, should belong to the model of appended claims of the present invention
It encloses.
Claims (42)
1. a kind of preparation method of stannic acid titanium photochemical catalyst, this method comprises the following steps:
(1) by TiO2And SnO2Mixing is ground, calcining；
(2) product that step (1) obtains is mixed with magnesium powder, is ground, calcined under vacuum；
(3) potassium chloroplatinate solution and water are added in the product that step (2) obtains, stirs, drying, after in protective gas in
At 250-350 DEG C keep the temperature to get.
2. the method according to claim 1, wherein in the step (1), the TiO2And SnO2Mole
Than for 2-8:8-2.
3. according to the method described in claim 2, it is characterized in that, in the step (1), the TiO2And SnO2Mole
Than for 2:8,4:6,5:5,6:4,8:2.
4. according to the method described in claim 3, it is characterized in that, in the step (1), the TiO2And SnO2Mole
Than for 2:8.
5. the method according to claim 1, wherein in the step (1), the temperature of the calcining is
1000-1700℃。
6. according to the method described in claim 5, it is characterized in that, the temperature of the calcining is 1500 in the step (1)
℃。
7. the method according to claim 1, wherein the time of the calcining is 5- in the step (1)
10h。
8. the method according to the description of claim 7 is characterized in that the time of the calcining is 10h in the step (1).
9. the method according to claim 1, wherein in the step (2), production that the step (1) obtains
The molar ratio of object and magnesium powder is 1:1~1:5.
10. according to the method described in claim 9, it is characterized in that, in the step (2), production that the step (1) obtains
The molar ratio of object and magnesium powder is 1:3.
11. the method according to claim 1, wherein the magnesium powder granularity is 1-10 in the step (2)
Micron.
12. according to the method for claim 11, which is characterized in that in the step (2), the magnesium powder granularity is 3 micro-
Rice.
13. the method according to claim 1, wherein in the step (2), the vacuum degree of the vacuum is
10-3-10-5Pa。
14. according to the method for claim 13, which is characterized in that in the step (2), the vacuum degree of the vacuum is
10-5Pa。
15. the method according to claim 1, wherein in the step (2), the temperature of the calcining is
250-350℃。
16. according to the method for claim 15, which is characterized in that in the step (2), the temperature of the calcining is
300℃。
17. the method according to claim 1, wherein the time of the calcining is 2- in the step (2)
4h。
18. according to the method for claim 17, which is characterized in that in the step (2), the time of the calcining is
3h。
19. the method according to claim 1, wherein in the step (3), the potassium chloroplatinate solution
Concentration is 0.1g/100ml.
20. the method according to claim 1, wherein in the step (3), production that the step (2) obtains
The ratio of object, potassium chloroplatinate solution and water is 1g:0.1-1ml:15-25ml.
21. according to the method for claim 20, which is characterized in that in the step (3), what the step (2) obtained
The ratio of product, potassium chloroplatinate solution and water is 1g:0.5ml:20ml.
22. the method according to claim 1, wherein the time of the stirring is 20- in the step (3)
30h。
23. according to the method for claim 22, which is characterized in that in the step (3), the time of the stirring is
24h。
24. the method according to claim 1, wherein the drying is that infrared ray dries in the step (3)
It is dry.
25. according to the method for claim 24, which is characterized in that in the step (3), the function of the infrared baking
Rate is 120W-160W.
26. according to the method for claim 25, which is characterized in that in the step (3), the function of the infrared baking
Rate is 150W.
27. the method according to claim 1, wherein in the step (3), the temperature of the drying is
180-220℃。
28. according to the method for claim 27, which is characterized in that in the step (3), the temperature of the drying is
200℃。
29. the method according to claim 1, wherein the protective gas is hydrogen in the step (3).
30. the method according to claim 1, wherein in the step (3), the temperature of the heat preservation is
280-320℃。
31. according to the method for claim 30, which is characterized in that in the step (3), the temperature of the heat preservation is
300℃。
32. the method according to claim 1, wherein the time of the heat preservation is 2- in the step (3)
4h。
33. according to the method for claim 32, which is characterized in that in the step (3), the time of the heat preservation is
3h。
34. according to claim 1 to method described in any one of 33, which is characterized in that described method includes following steps:
(1) by TiO2And SnO2It with molar ratio 2:8 mixing, grinds, calcines 10h at 1500 DEG C；
(2) it is mixed, is ground, then in vacuum degree 10 with molar ratio 1:3 with magnesium powder after grinding the product that step (1) obtains-5Pa、
3h is calcined at 300 DEG C；
(3) in the product that step (2) obtains be added concentration be 0.1g/100ml potassium chloroplatinate solution and water, stirring for 24 hours,
The infrared lamp of 150W is dried at 200 DEG C, then kept the temperature at 300 DEG C in hydrogen atmosphere 3h to get；Wherein, the step
(2) ratio of the product, potassium chloroplatinate solution and the water that obtain is 1g:0.5ml:20ml.
35. the stannic acid titanium photochemical catalyst being prepared such as any one of claims 1 to 34 the method.
36. stannic acid titanium photochemical catalyst according to claim 35, wherein the stannic acid titanium photocatalyst surface supports Pt's
Mass fraction is 0.1~1%.
37. stannic acid titanium photochemical catalyst according to claim 36, wherein the stannic acid titanium photocatalyst surface supports Pt's
Mass fraction is 0.5%.
38. stannic acid titanium photochemical catalyst according to claim 35, wherein the stannic acid titanium photochemical catalyst is Pt/
TixSnyO2-z, wherein x+y=1,0 < z < 2.
39. the stannic acid titanium photochemical catalyst according to claim 38, wherein the stannic acid titanium photochemical catalyst is Pt/
Ti0.2Sn0.8O2-z, wherein 0 < z < 2.
40. the stannic acid titanium photochemical catalyst and claim 35-39 that are prepared such as any one of claims 1 to 34 the method
Any one of described in stannic acid titanium photochemical catalyst degradation VOC activity in application.
41. application according to claim 40, wherein the VOC is volatile organic compounds.
42. application according to claim 40, wherein the VOC is formaldehyde and/or methanol.
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| CN104307503A (en) * | 2014-10-28 | 2015-01-28 | 大连工业大学 | Method for preparing SnO2/TiO2 compound micro-spheres with double-shell-layer core/shell structure |
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| CN104307503A (en) * | 2014-10-28 | 2015-01-28 | 大连工业大学 | Method for preparing SnO2/TiO2 compound micro-spheres with double-shell-layer core/shell structure |
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