CN108714431A - A kind of nano-cellulose enhancing composite photo-catalyst and its preparation method and application - Google Patents
A kind of nano-cellulose enhancing composite photo-catalyst and its preparation method and application Download PDFInfo
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- 229920002678 cellulose Polymers 0.000 title claims abstract description 42
- 239000001913 cellulose Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 17
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 13
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000725 suspension Substances 0.000 claims abstract description 16
- 230000015556 catabolic process Effects 0.000 claims abstract description 14
- 238000006731 degradation reaction Methods 0.000 claims abstract description 14
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004202 carbamide Substances 0.000 claims abstract description 12
- 239000002243 precursor Substances 0.000 claims abstract description 10
- 229910001961 silver nitrate Inorganic materials 0.000 claims abstract description 10
- 230000003197 catalytic effect Effects 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 6
- 239000001301 oxygen Substances 0.000 claims abstract description 6
- 239000003054 catalyst Substances 0.000 claims description 19
- 241000894007 species Species 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 5
- 239000005416 organic matter Substances 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 4
- 238000006555 catalytic reaction Methods 0.000 claims description 4
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methyl-cyclopentane Natural products CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000007605 air drying Methods 0.000 claims description 2
- 239000002121 nanofiber Substances 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 24
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 10
- 229910052709 silver Inorganic materials 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 239000002134 carbon nanofiber Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 10
- 229940043267 rhodamine b Drugs 0.000 description 10
- 239000000243 solution Substances 0.000 description 6
- 238000007146 photocatalysis Methods 0.000 description 5
- 230000001699 photocatalysis Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000006228 supernatant Substances 0.000 description 4
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 235000010980 cellulose Nutrition 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003570 air Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000001976 improved effect Effects 0.000 description 2
- 239000002070 nanowire Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011943 nanocatalyst Substances 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
-
- B01J35/39—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
- B01J37/084—Decomposition of carbon-containing compounds into carbon
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
The invention discloses the preparation methods that a kind of nano-cellulose enhances composite photo-catalyst, comprise the steps of：(1) silver nitrate, urea are dissolved in the suspension of nano-cellulose, are then dried, obtain precursor species；(2) precursor species are calcined under 450-600 DEG C, oxygen or air atmosphere, you can obtain nano-cellulose enhancing composite photocatalyst material.The invention also discloses the nano-cellulose being prepared by this method enhancing composite photo-catalyst and its applications.The present invention innovatively utilizes carboxyl and hydroxyl and its network structure mutually wound abundant on nano-cellulose chain to Ag+With stronger chemisorption and physical entanglement effect, by Ag+It is fixed on charing nitrogen surface, reduces Ag+Loss, while realize carbon adulterate, C and Ag collaboration remarkably promote charing nitrogen catalytic degradation efficiency.
Description
Technical field
The invention belongs to technical field of material chemistry more particularly to a kind of nano-cellulose enhancing composite photo-catalyst Ag/CNFs/
g-C3N4And its preparation method and application.
Background technology
The environmental pollution and energy shortage of getting worse become the two large problems for restricting human social development, find cleaning energy
Source is current important topic urgently to be resolved hurrily with environmental pollution is effectively improved.Solar energy is since its is pollution-free, cheap, reserves are huge
Etc. the first choice for being considered as replacement fossil energy.Semiconductor catalyst can effectively convert solar energy into chemical energy, can be used for
Pollutant and Photocatalyzed Hydrogen Production in catalytic degradation water etc..
Non-metal semiconductive catalyst carbonizes nitrogen (g-C3N4) there is response to visible light, prepare clean energy resource for catalysis
And photocatalysis degradation organic contaminant.However, that there is catalytic efficiencies is low, specific surface area is low, photoproduction carries for charing nitrogen catalyst
The defects of stream is easily compound, seriously affects its photocatalysis performance.The widely used such as structure of domestic and international researcher and chemical regulation,
Gap structure is modified and the modes such as element doping improve g-C3N4The photocatalysis performance of semiconductor catalyst, wherein element are mixed
Miscellaneous modified effect is apparent.In element doping modifying process, generally use nonmetalloid (C, N, P, S etc.) or metallic element
(Ag, K, Co) carrys out improvement effect, especially with metal element A g doping vario-property significant effects.But common Ag doping vario-properties g-
C3N4The preparation process of composite catalyst is complicated, and Ag is easy to run off in high-temperature burning process, to significantly limit its modification
Effect, and single nonmetal doping or metallic element doping is also difficult to reach collaboration facilitation.
Invention content
The technical problem to be solved by the present invention is to overcome the shortcomings of to mention in background above technology and defect, provide one
Kind nano-cellulose enhancing composite photo-catalyst Ag/CNFs/g-C3N4And its preparation method and application.
In order to solve the above technical problems, technical solution proposed by the present invention is：
A kind of preparation method of nano-cellulose enhancing composite photo-catalyst, comprises the steps of：
(1) silver nitrate, urea are dissolved in the suspension of nano-cellulose, are then dried, obtain precursor species；
(2) precursor species are calcined under 450-650 DEG C, oxygen or air atmosphere, you can obtain nano-cellulose increasing
Strong composite photocatalyst material Ag/CNFs/g-C3N4.It is calcined in oxygen or air, oxygen or air perform etching charing nitrogen,
Abundant hole is generated on charing nitrogen surface, large specific surface area significantly improves it to having to increase the active site of catalyst
The catalytic degradation activity of machine object.
Above-mentioned preparation method, it is preferred that the suspension of the nano-cellulose is that the nano-cellulose after oxidation suspends
Liquid.
Above-mentioned preparation method, it is preferred that the suspension of the nano-cellulose is the outstanding of TEMPO oxidation nanometer celluloses
Supernatant liquid.The nano-cellulose surface carries abundant carboxyl and hydroxyl, and has great draw ratio, can be to Ag+Chemistry is formed to inhale
Physical entanglement effect is echoed, Ag can be fixed+, reduce Ag+Loss in preparation process, to promote the composite catalyst pair
The catalytic degradation ability of organic matter.
Above-mentioned preparation method, it is preferred that in the suspension of the nano-cellulose, the draw ratio of nano-cellulose is
200-1000。
Above-mentioned preparation method, it is preferred that the quality of the silver nitrate accounts for 0.2% or less urea quality.Applicant is logical
It crosses the study found that since being introduced into for nano-cellulose can effectively reduce the loss of Ag in calcination process, only needs a small amount of nitre
Sour silver, which can reach, is obviously improved effect；Meanwhile if the additive amount of silver nitrate is excessive, it will cause the reunions of Ag, instead
It causes ineffective.
Above-mentioned preparation method, it is preferred that the solid content of cellulose nanometer fibril is in the suspension of nano-cellulose
The mass values of 0.002-0.05wt%, urea and nano-cellulose suspension are 1:1~2:1.Nanowire is added in the present invention
The main function of dimension element is that Ag is fixed on g-C3N4On, while realizing that C is adulterated.If applicant passes through the study found that Nanowire
The additive amount for tieing up element is less, then can not achieve the fixed function to Ag, if the additive amount of nano-cellulose is excessive, then will produce
Excessive C doping, and excessive C doping can become the compound center of photo-generated carrier, to inhibit photocatalysis.Therefore,
Only appropriate C doping is just conducive to the separation of photo-generated carrier, to improve photocatalysis.
Above-mentioned preparation method, it is preferred that in step (2), calcination time is 3-8 hours.
Above-mentioned preparation method, it is preferred that the drying is forced air drying, and drying temperature is 60-70 DEG C, and drying time is
8-12h。
The inventive concept total as one, the present invention also provides a kind of photochemical catalysts, are obtained by above-mentioned preparation method, should
Catalyst distribution is largely mesoporous, large specific surface area.
The inventive concept total as one, the present invention also provides a kind of above-mentioned photochemical catalysts in catalytic degradation organic matter
Application.
Compared with the prior art, the advantages of the present invention are as follows：
(1) the preparation method is that one-step calcination prepares porous, high activity charing nitrogen nanocatalyst；It utilizes
Under the conditions of 450-600 DEG C, especially 550 DEG C, air or oxygen generates abundant hole to carbonizing the etching of nitrogen on charing nitrogen surface
Gap increases the active site of catalyst, significantly improves its catalytic degradation activity to organic matter.
(2) present invention innovatively utilizes carboxyl and hydroxyl and its net mutually wound abundant on nano-cellulose chain
Network structure is to Ag+With stronger chemisorption and physical entanglement effect, by Ag+It is fixed on charing nitrogen surface, reduces Ag+
Loss, while realize C adulterate, C and Ag collaboration remarkably promote charing nitrogen catalytic degradation efficiency.
(3) composite photo-catalyst of the invention has excellent degradation property to organic matter under visible light, and has pole
Good stability.
(4) recycling can be repeated several times in composite photo-catalyst of the invention.
Description of the drawings
The XRD diagram for the photochemical catalyst that Fig. 1 is comparative example 1-2 of the present invention and prepared by embodiment 1.
The SEM figures for the photochemical catalyst that Fig. 2 is comparative example 1-2 of the present invention and prepared by embodiment 1.
The photochemical catalyst that Fig. 3 is comparative example 1-2 of the present invention and prepared by embodiment 1 (>=420nm) Luo Dan under xenon lamp irradiation
The degradation rate of bright B.
Specific implementation mode
To facilitate the understanding of the present invention, it is done more entirely below in conjunction with Figure of description and preferred embodiment to inventing herein
Face meticulously describes, but protection scope of the present invention is not limited to following specific examples.
Unless otherwise defined, all technical terms used hereinafter are generally understood meaning phase with those skilled in the art
Together.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention's
Protection domain.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city
Field is commercially available or can be prepared by existing method.
Comparative example 1：
The preparation method of the photochemical catalyst of this comparative example, includes the following steps：
(1) it takes 20g urea to be dissolved in 20mL deionized waters, obtains urea liquid；
(2) urea liquid is placed in air dry oven, 70 DEG C of dry 12h obtain precursor species；
(3) crucible for filling precursor species is closed the lid, and wraps one layer of masking foil, in Muffle furnace at 550 DEG C, air
Calcine 4h under atmosphere, heating rate is 15 DEG C/min, after natural cooling, you can obtain g-C3N4Catalysis material, XRD diagram and SEM
Photo is respectively such as Fig. 1 and Fig. 2 (a:g-C3N4) shown in.
Charing nitrogen catalyst prepared by this comparative example of 50mg is taken to put into the rhodamine B solution of 100mL, 20mg/L, secretly
After reacting 30min, under the visible light of λ >=420nm, 30min is irradiated, the concentration of rhodamine B in supernatant liquor is surveyed after centrifugation.It surveys
Test result shows that the degradation rate of RhB after illumination 30min is 96%.
Comparative example 2：
The preparation method of the photochemical catalyst of this comparative example, includes the following steps：
(1) 0.04g silver nitrates are taken, is sufficiently stirred and makes it dissolve in 20g deionized waters, obtain silver nitrate solution；
(2) it takes 20g urea to be dissolved in the silver nitrate solution that step (1) obtains, is sufficiently stirred dissolving；
(3) mixed solution prepared by step (2) is placed in air dry oven, 70 DEG C of dry 12h obtain presoma object
Matter；
(4) crucible for filling precursor species is closed the lid, and wraps one layer of masking foil, be placed in Muffle furnace, 550
DEG C, calcine 4h under air atmosphere, heating rate is 15 DEG C/min, after natural cooling, you can obtain Ag/g-C3N4Composite photocatalyst
Material, XRD diagram and SEM photograph are respectively such as Fig. 1 and Fig. 2 (b:Ag/g-C3N4) shown in.
The Ag/g-C for taking this comparative example of 50mg to prepare3N4Composite photocatalyst material puts into the rhodamine B of 100mL, 20mg/L
In solution, after dark reaction 30min, under the visible light of λ >=420nm, 30min is irradiated, rhodamine B in supernatant liquor is surveyed after centrifugation
Concentration.Test result shows that the degradation rate of RhB after illumination 30min is 100%.
Embodiment 1：
A kind of preparation method of the nano-cellulose enhancing composite photo-catalyst of the present invention, includes the following steps：
(1) nano-cellulose suspension (CNFs, the solid content of cellulose nanometer fibril for taking 20g TEMPO to aoxidize
The draw ratio of 0.01wt%, nanofiber are about 300-600) and 0.04g silver nitrates, stir fully dissolving；
(2) it takes 20g urea to be dissolved in above-mentioned mixed solution, is sufficiently stirred dissolving；
(3) mixed solution that step (2) obtains is placed in air dry oven, 70 DEG C of dry 12h obtain presoma object
Matter；
(4) crucible for filling precursor species is closed the lid, and wraps one layer of masking foil and is placed in Muffle furnace, at 550 DEG C,
Calcine 4h under air atmosphere, heating rate is 15 DEG C/min, after natural cooling, you can obtain nano-cellulose enhancing complex light and urge
Agent Ag/CNFs/g-C3N4, XRD diagram and SEM photograph are respectively such as Fig. 1 and Fig. 2 (c：Ag/CNFs/g-C3N4) shown in.From Fig. 2
SEM figures as can be seen that g-C prepared by the present embodiment and comparative example3N4All has fluffy pore structure.It can from Fig. 1
Go out, Ag/CNFs/g-C is added3N4XRD curves can obviously detect the characteristic peak of Ag, and Ag/g-C3N4Ag is not detected then
Characteristic peak, illustrate the present invention be added CNFs, more Ag can be fixed on g-C3N4On.Moreover, real while CNFs is added
Show to g-C3N4C doping, C and Ag synergistic effect significantly improve g-C3N4Photocatalytic Degradation, as shown in Figure 3.
Take 50mg nano-cellulose enhancing composite photo-catalyst Ag/CNFs/g-C manufactured in the present embodiment3N4, put into
100mL, a concentration of 20mg/L rhodamine B (RhB) solution in, after dark reaction 30min, under the visible light of λ >=420nm, shine
30min is penetrated, the concentration of rhodamine B in supernatant liquor is surveyed after centrifugation, test result shows that the degradation rate of RhB after illumination 21min is
100%.
To centrifuging after nano-cellulose manufactured in the present embodiment enhancing composite photo-catalyst progress light-catalyzed reaction
Washing, after dry, Photocatalytic Degradation Property is constant after recycling 5 times.
Claims (10)
1. a kind of preparation method of nano-cellulose enhancing composite photo-catalyst, which is characterized in that comprise the steps of：
(1) silver nitrate, urea are dissolved in the suspension of nano-cellulose, are then dried, obtain precursor species；
(2) precursor species are calcined under 450-600 DEG C, oxygen or air atmosphere, you can it is multiple to obtain nano-cellulose enhancing
Closing light catalysis material.
2. preparation method as described in claim 1, which is characterized in that the suspension of the nano-cellulose is receiving after aoxidizing
The suspension of rice cellulose.
3. preparation method as described in claim 1, which is characterized in that the suspension of the nano-cellulose aoxidizes for TEMPO
The suspension of nano-cellulose.
4. preparation method as described in claim 1, which is characterized in that in the suspension of the nano-cellulose, nanofiber
The draw ratio of element is 200-1000.
5. preparation method as described in claim 1, which is characterized in that the quality of the silver nitrate accounts for the 0.2% of urea quality
Below.
6. preparation method as described in claim 1, which is characterized in that cellulose nanometer fibril in the suspension of nano-cellulose
Solid content be 0.002wt%-0.05wt%, the mass values of urea and nano-cellulose suspension are 1:1~2:1.
7. preparation method as described in claim 1, which is characterized in that in step (2), calcination time is 3-8 hours.
8. the preparation method as described in any one of claim 1-7, which is characterized in that the drying is forced air drying, dry
Temperature is 60-70 DEG C, drying time 8-12h.
9. a kind of photochemical catalyst, which is characterized in that obtained by claim 1-8 any one of them preparation methods.
10. a kind of application of photochemical catalyst by described in claim 9 in catalytic degradation organic matter.
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| CN109778537A (en) * | 2018-12-25 | 2019-05-21 | 华南理工大学 | The nano cellulose material and its preparation method of the uniform and stable load of nano-Ag particles and application |
| CN110180536A (en) * | 2019-05-31 | 2019-08-30 | 华南理工大学 | A kind of nano silver-lignin carbon composite and its preparation method and application |
| CN110280289A (en) * | 2019-07-05 | 2019-09-27 | 上海理工大学 | A kind of carbonitride catalysis material and preparation method thereof |
| CN110330091A (en) * | 2019-05-27 | 2019-10-15 | 中南林业科技大学 | Magnetic green material function Carbon fibe and its preparation method and application based on the catalysis of light Fenton |
| CN110327955A (en) * | 2019-06-13 | 2019-10-15 | 福建农林大学 | A kind of preparation method of the micro- hetero-junctions carbon nitride photocatalyst of carbon fiber interpenetrating |
| CN110606991A (en) * | 2019-09-27 | 2019-12-24 | 枣庄学院 | High-thermal-stability amphiphilic g-C3N4 modified CNFs sponge and preparation method thereof |
| CN111167493A (en) * | 2019-12-30 | 2020-05-19 | 清华大学 | Nano-cellulose carbon nitride composite membrane and preparation method and application thereof |
| CN112536057A (en) * | 2020-09-28 | 2021-03-23 | 南京林业大学 | Carbon material and preparation method and application thereof |
| CN114653393A (en) * | 2022-03-29 | 2022-06-24 | 天津科技大学 | High-efficiency photocatalyst, preparation method and application |
| CN114988515A (en) * | 2022-04-21 | 2022-09-02 | 南京林业大学 | Method for removing Cr (VI) and g-C adopted by same 3 N 4 Composite foam/cellulose/GO |
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