CN106563499A - Melem/g-C3N4 composite material prepared through thermal polymerization, and preparation method and application thereof - Google Patents
Melem/g-C3N4 composite material prepared through thermal polymerization, and preparation method and application thereof Download PDFInfo
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- CN106563499A CN106563499A CN201611029222.1A CN201611029222A CN106563499A CN 106563499 A CN106563499 A CN 106563499A CN 201611029222 A CN201611029222 A CN 201611029222A CN 106563499 A CN106563499 A CN 106563499A
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- YSRVJVDFHZYRPA-UHFFFAOYSA-N melem Chemical compound NC1=NC(N23)=NC(N)=NC2=NC(N)=NC3=N1 YSRVJVDFHZYRPA-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000002131 composite material Substances 0.000 title claims abstract description 42
- 238000012719 thermal polymerization Methods 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title description 8
- 239000000463 material Substances 0.000 claims abstract description 47
- 230000001699 photocatalysis Effects 0.000 claims abstract description 24
- 238000007146 photocatalysis Methods 0.000 claims abstract description 23
- 239000012043 crude product Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 14
- 238000005119 centrifugation Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 238000012805 post-processing Methods 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000926 separation method Methods 0.000 abstract description 4
- 229920000877 Melamine resin Polymers 0.000 abstract description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 abstract description 3
- 238000003911 water pollution Methods 0.000 abstract description 3
- 239000011449 brick Substances 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 13
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000000862 absorption spectrum Methods 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 4
- 239000011941 photocatalyst Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 235000013877 carbamide Nutrition 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000002211 ultraviolet spectrum Methods 0.000 description 2
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- -1 gold halogen Chemical class 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 235000012907 honey Nutrition 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000001782 photodegradation Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 238000010998 test method Methods 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
- B01J31/0235—Nitrogen containing compounds
- B01J31/0244—Nitrogen containing compounds with nitrogen contained as ring member in aromatic compounds or moieties, e.g. pyridine
-
- 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
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- B01J35/39—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
Abstract
The invention provides a method for preparing a melem/g-C3N4 composite material through thermal polymerization. The method comprises the following steps: 1) adding a source material of thermal polymerization, i.e., dicyanodiamide or melamine, into a high-temperature-resistant container with a gas outlet, heating a system to 380 to 530 DEG C and maintaining the temperature for 0.5 to 10 h so as to obtain a crude product; and 2) carrying out post-treatment by subjecting the crude product to grinding and centrifugal cleaning. The melem/g-C3N4 composite material prepared in the invention can adjust a band gap structure, reduce the probability of reduction in efficiency since a single C3N4 electron hole is prone to compounding, improve the separation efficiency of electron holes and enhance photocatalysis effect; and a prepared photocatalysis brick is extensively applicable to tunnels and building surfaces and to treatment of water pollution.
Description
Technical field
The invention belongs to the preparing technical field of composite, and in particular to melem/g- prepared by a kind of thermal polymerization
C3N4Composite and preparation method and application.
Background technology
Visible-light photocatalyst becomes current photocatalysis aspect research class the most popular because it is widely applied scope
Topic, such as application of gaseous contamination process, water pollution process and indoor environment purified treatment etc..And it is high yield, efficient
Photocatalyst is always priority fields of study.In general, the performance of photocatalyst is mainly by the band of semi-conducting material itself
The physicochemical properties such as gap, Electronic Structure, specific surface area and pattern are determined.The bandgap structure of material determines the position of energy band
Put, absorption spectrum and produced photoelectronic mobility, be the principal element for affecting material light catalysis property.
Up to now, according to the composition and bandgap structure of material can visible-light photocatalyst be divided into four kinds it is not of the same race
Class, including the composite of wide bandgap semiconductor materials doped metal ion, narrow bandgap semiconductor material, precious metal material, with
And the metal-free non-metal semiconductor materials for finding recently.The C of graphite-phase3N4Material is by Elements C most abundant on the earth
With N compositions, it is cheap so quantity is abundant.Yan etc.（S. C. Yan,Z. S. Li, Z. G. Zou,
Photodegradation performance of g-C3N4 gabricated by firectly heating
melamine, Langmuir, 25 (2009) 10397-10401.）G-C was found in 20093N4(the C of graphite-phase3N4) tool
There is light-catalysed effect, this material can adopt various materials containing C and N element such as tripolycyanamide, dicyanodiamine, amine
Cyanogen, carbamide and thiourea etc. are thermally decomposed to yield.But due to g-C3N4Electronics recombination rate it is higher, cause its photocatalysis efficiency relatively low, from
And limit its photocatalytic applications.
The content of the invention
It is an object of the invention to provide a kind of melem/g-C3N4Composite, while provide its preparation method and application being
The another goal of the invention of the present invention.Melem/the g-C of the present invention3N4Composite is in melem and g-C3N4Between can form different
Matter knot reduces photoelectron hole-recombination rate, improves photocatalysis performance.
For achieving the above object, the technical scheme that the present invention takes is as follows：Melem/g-C is prepared using thermal polymerization3N4
The method of composite, comprises the following steps：
1）Negate and answer source material dicyanodiamine or tripolycyanamide, in being placed in the high-temperature resistant container with gas outlet, by system liter
Temperature is to 380 DEG C～530 DEG C and is incubated 0.5h～10h and obtains crude product；Gas outlet is set on container, it is therefore an objective to make the NH of generation3Overflow
Go out, further improve the yield of product.
2）Post processing：Crude product is ground, eccentric cleaning post-drying.
Step 1）In, heating rate during intensification is 5～30 DEG C/min.
Step 2）In, the concrete operations of post processing are：First using Achatess dismembyator grind, then add cleanout fluid clean from
The heart, the insulation drying at 40～100 DEG C；The cleanout fluid is the mixture of water and ethanol.
Milling time is at least 10min, and the speed of centrifugation is 3000～9000 turns/min, and water and ethanol is mixed in cleanout fluid
Composition and division in a proportion example is 1 ︰ 1, and centrifugation number of times is 3 times.
The high-temperature resistant container is alumina crucible.
Melem/the g-C obtained using described preparation method3N4Composite.
Melem/the g-C3N4Application of the composite on photocatalysis technology.
Described melem/g-C3N4Composite is in the technical applications of photocatalysis NO.
The present invention compared with prior art, has the advantages that：
（1）The present invention is using dicyanodiamine or tripolycyanamide as preparing melem/g-C3N4Source material, low cost, yield
Height, yield is up to more than 50%；And only need to be can be prepared by using a source material and controlling reaction temperature, preparation method is simple, cost
It is low, beneficial to industrial applications, have wide practical use.
（2）Obtained melem/g-C3N4Composite has separation efficiency height, the photocatalysis effect in surface electronic hole
Good the characteristics of, it is verified by experiments, the air pollutants NO that degrades in 5min is up to 28%.Using dicyanodiamine in 500 DEG C of heating
Melem/the g-C prepared under conditions of 4h3N4, in 5min, can be dense by the NO of 1000ppb under the golden halogen light irradiation of 100w
Degree is degraded to 720ppb, and degradation rate reaches 28%, and effect is better than g-C3N4This homogenous material（It is only capable of degraded 17% or so）.
（3）Obtained melem/g-C of the invention3N4Bandgap structure can be adjusted, single C is reduced3N4Electronics is empty during material
Cave easily be combined reduce efficiency probability, improve electron hole separation efficiency, improve photocatalysis effect, made by photocatalysis brick can
It is widely used in tunnel, building surface, also apply be applicable to water pollution process.
Description of the drawings
Fig. 1 is using the melem/g-C prepared under dicyanodiamine different temperatures3N4Composite（A, b）And g-C3N4It is single
One material（C, d）X ray diffracting spectrum；
Fig. 2 is the melem/g-C prepared using condition of different temperatures3N4Composite and g-C3N4The photocatalysis drop of homogenous material
Solution NO（a）And NO2（b）Degradation property test；Wherein C0The test volume of NO during not irradiate, C is the test volume of NO after irradiation；b
Middle vertical coordinate is NO2Generation ratio；
Fig. 3 is the melem/g-C prepared as source material using dicyanodiamine under different temperatures3N4Composite（A, b）And g-
C3N4Homogenous material（C, d）Scanning electron microscope (SEM) photograph；
Fig. 4 is the melem/g-C prepared under different temperatures3N4Composite（A, b）And g-C3N4Homogenous material（C, d）It is ultraviolet
Visible absorption spectrum figure；
Fig. 5 is the melem/g-C prepared under different temperatures3N4Composite（A, b）And g-C3N4（C, d）The ratio table of homogenous material
Area；
Fig. 6 is the quality using differential responses source material product resulting at different temperatures.
Specific embodiment
The present invention is described further with reference to embodiments.
Embodiment 1
Thermal polymerization prepares melem/g-C3N4Composite, comprises the following steps：
1）Negate and answer source material dicyanodiamine, in being placed in the alumina crucible with gas outlet, system is warming up to into 400 DEG C simultaneously
Insulation 8h obtains crude product；Heating rate during intensification is 15 DEG C/min；
2）Post processing：Crude product first grinds 10min using Achatess dismembyator, then adds cleanout fluid cleaning centrifugation, and the speed of centrifugation is
6000 turns/min, the insulation drying at 100 DEG C is centrifuged；The cleanout fluid is the mixture of water and ethanol；In cleanout fluid
The mixed proportion of water and ethanol is 1：1, centrifugation number of times is 3 times.
Embodiment 2
Thermal polymerization prepares melem/g-C3N4Composite, comprises the following steps：
1）Negate and answer source material dicyanodiamine, in being placed in the alumina crucible with gas outlet, system is warming up to into 530 DEG C simultaneously
Insulation 0.5h obtains crude product；Heating rate during intensification is 5 DEG C/min；
2）Post processing：Crude product first grinds 10min using Achatess dismembyator, then adds cleanout fluid cleaning centrifugation, and the speed of centrifugation is
3000 turns/min, the insulation drying at 40 DEG C is centrifuged；The cleanout fluid is the mixture of water and ethanol；Water in cleanout fluid
It is 1 with the mixed proportion of ethanol：1, centrifugation number of times is 3 times.
Embodiment 3
Thermal polymerization prepares melem/g-C3N4Composite, comprises the following steps：
1）Negate and answer source material dicyanodiamine, in being placed in the alumina crucible with gas outlet, system is warming up to into 380 DEG C simultaneously
Insulation 10h obtains crude product；Heating rate during intensification is 30 DEG C/min；
2）Post processing：Crude product first grinds 10min using Achatess dismembyator, then adds cleanout fluid cleaning centrifugation, and the speed of centrifugation is
9000 turns/min, the insulation drying at 80 DEG C is centrifuged；The cleanout fluid is water and the mixture of ethanol, water in cleanout fluid
It is 1 with the mixed proportion of ethanol：1, the number of times for cleaning centrifugation is 3 times.
Embodiment 4
Thermal polymerization prepares melem/g-C3N4Composite, difference from Example 1 is to change dicyanodiamine into three
Poly cyanamid, other are with embodiment 1.
Embodiment 5
Thermal polymerization prepares melem/g-C3N4Composite, difference from Example 2 is to change dicyanodiamine into three
Poly cyanamid, other are with embodiment 2.
Embodiment 6
Thermal polymerization prepares melem/g-C3N4Composite, difference from Example 3 is to change dicyanodiamine into three
Poly cyanamid, other are with embodiment 3.
The performance test of the material prepared when test 1 pair is using different temperatures
It is experimentally confirmed that in system of the present invention, step 1）In it is more crucial to the control ratio of holding temperature in system, only 380
DEG C～530 DEG C of holding temperature under, form the melem/g-C with photocatalysis effect3N4Composite, during higher than 530 DEG C
G-C will be only generated under system of the present invention3N4This homogenous material, can not form melem/g-C3N4This heterojunction structure, its light
Catalytic efficiency can decline.
To describe the problem, the preparation method with reference to described in embodiment 1 only changes holding temperature, and holding temperature is prepared respectively
For the test sample of 450 DEG C, 500 DEG C, 550 DEG C and 600 DEG C four of holding temperature, each test sample to obtaining carries out following
Performance test.
1.1 XRD diffraction are tested
Fig. 1 is using the melem/g-C prepared under dicyanodiamine different temperatures3N4Composite（A, b）And g-C3N4Single material
Material（C, d）X ray diffracting spectrum.
C and d occur in that 12.6 ° and 27.3 ° of peaks in Fig. 1, belong to g-C is understood to Fig. 1 analyses3N4Peak；In a and b
10.8 ° are occurred in that, 13.2 °, 26.5 °, 30.9 ° of peaks belong to the peak of melem, and this shows, prepared at 450 DEG C and 500 DEG C
Material is melem/g-C3N4Composite, and at 550 DEG C and 600 DEG C prepare then be homogenous material g-C3N4。
1.2 photocatalysis performances are tested
Photocatalysis method of testing：Sample 0.2g to be tested is deposited on the evaporating dish of 90mm diameters, light-catalyzed reaction case is put into
Body, and capping casing, leave air inlet and venthole, using the NO gases of 100ppm as source gas, NO are diluted to
1ppm concentration is passed through reaction casing, light-catalyzed reaction test is carried out under 150w gold halogen light irradiations, through light-catalyzed reaction
Gas by venthole enter Thermal NOx testers, test out reacted NO and NO2Gas concentration.As a result Fig. 2 is seen
It is shown.
As shown in Figure 2, with the carrying out of reaction, NO2The ratio increased in start to degrade five minutes is consistent with NO, with
Further carrying out for reaction, NO2Ratio keeps constant, illustrates NO2It is converted into NO3 -Ion.When holding temperature is 450 or 500
DEG C when, photocatalysis NO or NO2Effect be better than 550 DEG C and 600 DEG C, wherein in photocatalysis NO, catalytic effect when 500 DEG C
28% is reached, this shows, with g-C3N4This homogenous material is compared, melem/g-C prepared by the present invention3N4Composite has
More preferable photocatalysis effect.
The test of 1.3 scanning electron microscopies, ultraviolet spectrum and specific surface area
For the impact of the structure to photocatalysis effect of research material, the test sample to preparing under different temperatures is scanned Electronic Speculum
Observation, ultraviolet spectrum and specific surface area test, as a result as shown in Fig. 3, Fig. 4 and Fig. 5.Fig. 3 is that dicyan is adopted under different temperatures
Melem/g-C that diamidogen is prepared as source material3N4Composite（A, b）And g-C3N4Homogenous material（C, d）Scanning electron microscope
Figure；Fig. 4 is the melem/g-C prepared under different temperatures3N4Composite（A, b）And g-C3N4Homogenous material（C, d）It is ultraviolet
Visible absorption spectrum figure；Fig. 5 is the melem/g-C prepared under different temperatures3N4Composite（A, b）And g-C3N4（C, d）
The specific surface area of homogenous material.
Fig. 3 analyses are understood, when holding temperature is 450 DEG C and 500 DEG C, can substantially observe that system is two-phase system,
This is also again showed that, when holding temperature is in OK range, under the system of the present invention, can form the honey with photocatalysis effect
Strangle amine/g-C3N4Composite, temperature is too high will to only generate g-C under system of the present invention3N4This homogenous material, can not form
Melem/g-C3N4This heterojunction structure, meanwhile, can also obtain from Fig. 3, when holding temperature is 500 DEG C, melem and g-
C3N4Ratio close 1:1, now material there is more preferable photocatalysis effect（Referring to Fig. 2）.
Test sample absorbing light from the point of view of the absorption spectrum of Fig. 4 and the specific surface area of Fig. 5, when holding temperature is 600 DEG C
Spectrum is most wide, and specific surface area is maximum.And the homogenous material g-C obtained when in fig. 2 holding temperature is 600 DEG C3N4The disposal efficiency
It is minimum on the contrary, it is possible thereby to judge, melem/g-C that the present invention is obtained3N4The raising of composite photocatalysis efficiency can sum up
In melem/g-C3N4The formation of hetero-junctions improves the separation efficiency of electron-hole, so as to improve its disposal efficiency.
Test 2 using differential responses source material resulting product at different temperatures amount
Reaction source material is except for the difference that replaced with respectively thiourea, urea, dicyanodiamine and melamine by preparation method with embodiment 1
Amine, during experiment react source material consumption be 10g, the quality for obtaining product during using differential responses source material as shown in Figure 6, from
Knowable to Fig. 6, melem/g-C is prepared using dicyanodiamine and tripolycyanamide3N4The yield of composite is higher, and its yield is reachable
50%, much larger than thiourea and urea, therefore the present invention adopts dicyanodiamine and tripolycyanamide to react source material.
Claims (8)
1. melem/g-C is prepared using thermal polymerization3N4The method of composite, it is characterised in that comprise the following steps：
1）Negate and answer source material dicyanodiamine or tripolycyanamide, in being placed in the high-temperature resistant container with gas outlet, by system liter
Temperature is to 380 DEG C～530 DEG C and is incubated 0.5h～10h and obtains crude product；
2）Post processing：Crude product is ground, eccentric cleaning post-drying.
2. as claimed in claim 1 melem/g-C is prepared using thermal polymerization3N4The method of composite, it is characterised in that
Step 1）In, heating rate during intensification is 5～30 DEG C/min.
3. as claimed in claim 1 melem/g-C is prepared using thermal polymerization3N4The method of composite, it is characterised in that
Step 2）In, the concrete operations of post processing are：First ground using Achatess dismembyator, then add cleanout fluid cleaning centrifugation, in 40～
Insulation drying at 100 DEG C；The cleanout fluid is the mixture of water and ethanol.
4. as claimed in claim 3 melem/g-C is prepared using thermal polymerization3N4The method of composite, it is characterised in that
Milling time is at least 10min, and centrifugal speed is 3000～9000 turns/min, and centrifugation number of times is at least 3 times.
5. as claimed in claim 1 melem/g-C is prepared using thermal polymerization3N4The method of composite, it is characterised in that
The high-temperature resistant container is alumina crucible.
6. melem/the g-C for being obtained using the arbitrary described method of claim 1-53N4Composite.
7. melem/g-C described in claim 63N4Application of the composite on photocatalysis technology.
8. melem/the g-C described in claim 73N4Composite is in the technical applications of photocatalysis NO.
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| CN108993569A (en) * | 2018-07-28 | 2018-12-14 | 天津大学 | A kind of preparation method of rodlike porous graphite phase carbon nitride catalysis material |
| CN112871194A (en) * | 2020-06-30 | 2021-06-01 | 深圳大学 | Bismuth vanadate composite photocatalytic material and preparation method thereof |
| CN113042090A (en) * | 2021-04-01 | 2021-06-29 | 辽宁石油化工大学 | Non-metal photocatalyst with charge transfer chain and preparation method and application thereof |
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| CN108993569A (en) * | 2018-07-28 | 2018-12-14 | 天津大学 | A kind of preparation method of rodlike porous graphite phase carbon nitride catalysis material |
| CN112871194A (en) * | 2020-06-30 | 2021-06-01 | 深圳大学 | Bismuth vanadate composite photocatalytic material and preparation method thereof |
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