CN109317182A - A kind of g-C3N4The preparation method of/Au@Pt heterojunction photocatalysis material - Google Patents
A kind of g-C3N4The preparation method of/Au@Pt heterojunction photocatalysis material Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 46
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 46
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 33
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims abstract description 24
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Substances OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000000137 annealing Methods 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims abstract description 6
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(I) nitrate Inorganic materials [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 17
- 239000008367 deionised water Substances 0.000 claims description 14
- 229910021641 deionized water Inorganic materials 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 11
- 229920001577 copolymer Polymers 0.000 claims description 10
- 239000011258 core-shell material Substances 0.000 claims description 10
- 229910004042 HAuCl4 Inorganic materials 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 8
- 238000002604 ultrasonography Methods 0.000 claims description 8
- 229910002621 H2PtCl6 Inorganic materials 0.000 claims description 7
- 239000012279 sodium borohydride Substances 0.000 claims description 7
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 7
- 238000005119 centrifugation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000001376 precipitating effect Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
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- 238000003756 stirring Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
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- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 238000005253 cladding Methods 0.000 abstract description 3
- 239000010931 gold Substances 0.000 abstract 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 2
- 229920000877 Melamine resin Polymers 0.000 abstract 1
- 125000003368 amide group Chemical group 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 125000000524 functional group Chemical group 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 238000009766 low-temperature sintering Methods 0.000 abstract 1
- 239000003863 metallic catalyst Substances 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000013021 overheating Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000007540 photo-reduction reaction Methods 0.000 abstract 1
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- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 238000012512 characterization method Methods 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 229910001868 water Inorganic materials 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
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- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
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- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 238000001237 Raman spectrum Methods 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
Abstract
The present invention relates to a kind of g-C3N4The preparation method of/Au@Pt heterojunction photocatalysis material fires preparation g-C with melamine precursor first3N4Block materials, then to blocky g-C3N4Ethylene glycol solvent is carried out to remove to obtain g-C3N4Nanometer sheet；The gold nanorods for preparing cetyl trimethylammonium bromide (CTAB) cladding using the seed law at the same time, then in the Pt little particle of one layer of 2-5nm size of Au stick surface modification of synthesis；g-C3N4Nanometer sheet because surface band amido functional group present negative electrical charge, and CTAB cladding golden stick it is positively charged, by Electrostatic Absorption gold stick can and g-C3N4Nanometer sheet combines, and is based on solid phase reaction, selects suitable annealing temperature and soaking time, last low-temperature sintering prepares the excellent double heterojunction g-C of photocatalysis performance3N4/ Au@Pt material.The present invention is using " first preparing, rear to assemble " thinking, the g-C of preparation3N4Form composite heterogenous junction through Overheating Treatment with Au Pt, be able to solve conventional photo-reduction prepare in metallic catalyst size it is uneven and the problem of influence catalytic effect.
Description
Technical field
The present invention relates to a kind of catalysis materials, and in particular to a kind of g-C3N4The system of/Au@Pt heterojunction photocatalysis material
Preparation Method.
Background technique
Currently, generating CO after the consumption growing day by day of fossil class A fuel A and shortage and its burning2Bring a series of energy with
Environmental problem.Photocatalysis technology shows huge potentiality in terms of preparing clean energy resource (such as hydrogen energy source), because it can use
Solar energy abundant is widely studied.In recent years, the research of photocatalytic water splitting hydrogen manufacturing increasingly obtains the attention of various countries, mechanism
It is the photo-generate electron-hole pair that semiconductor material has reducing power and oxidability by effectively absorbing luminous energy generation, is urging
Directly or indirectly oxidation or reduction reaction occur for the surface of agent, to realize that water decomposition is hydrogen and oxygen.Numerous
G-C in photochemical catalyst3N4Band gap is 2.7eV, conduction band and valence band across standing in H+/H2And H2O/O2The two sides of reduction potential, because available
Carry out visible light catalytic to produce hydrogen and be concerned.G-C simultaneously3N4With visible light catalytic, large specific surface area, chemical and thermal stability
It is good, it is widely studied as advantages such as the carriers of support metal or semiconductor nanoparticle by scholar.g-C3N4In photocatalysis system
When hydrogen, excite the electronics to conduction band in conjunction with hydrogen ion, the hole that leaves by be added in catalyst system triethanolamine, Victoria C or
Methanol removes in time.Due to superpotential presence, g-C3N4The electronics that light excitation generates cannot be transferred quickly to hydrogen ion, into
And affect the rate of photodissociation hydrogen manufacturing.In g-C3N4The Pt of surface depositing dosed quantities can this problem to a certain extent, this is
Since Pt can be with H-shaped at Pt-H key, the rapid transfer for being conducive to electronics makes H+ be converted into H2。
Although g-C3N4There are extensive photocatalytic applications, and in g-C3N4The Pt of surface depositing dosed quantities can be certain
Alleviate the compound of electron-hole pair in degree, but since material visible absorption itself is weak former with electron-hole recombination rate height etc.
Cause, practical application effect is unsatisfactory, so, promote g-C3N4How the critical issue of photocatalysis hydrogen production is in enhancing g-
C3N4By g-C while light absorption3N4The active electrons that light excitation generates are efficiently transferred to above the high catalyst of photocatalytic activity
(such as Pt).
Summary of the invention
It is an object of the invention to: a kind of g-C is provided3N4The preparation method of/Au@Pt heterojunction photocatalysis material, the g-
C3N4/ Au@Pt heterojunction photocatalysis material is able to solve the above problem.
To achieve the goals above, the invention provides the following technical scheme:
A kind of g-C3N4The preparation method of/Au@Pt heterojunction photocatalysis material, the specific steps are as follows:
(1) preparation of Au nanometer rods
(1.1) by HAuCl4Mixed solution is mixed to obtain with CTAB, cold NaBH4 solution is rapidly injected in mixed solution,
Quickly mixing 0.8-1.2min is used after saving 2-5h at room temperature as seed solution；
(1.2) by CTAB, HAuCl4And AgNO3After mixing, it is 1-2 that HCl adjustment pH value of solution, which is added, is obtained after adding AA
Growth solution；
(1.3) seed solution is injected in growth solution, is gently mixed 18-22 seconds, obtained after standing at least 6h at room temperature
To Au nanometer rods；
(2) preparation of Au@Pt core-shell structure copolymer nanometer rods
(2.1) by the Au nanometer rods prepared by be centrifuged to obtain precipitating, cleaned once with deionized water, be redispersed in from
In sub- water；
(2.2) mixture of CTAB and AA is added into above-mentioned solution, adds H2PtCl6；
(2.3) it is placed in 55-65 DEG C of oven after 10-14 hours, is centrifuged to obtain precipitating, is cleaned once with deionized water, then
Dispersion obtains Au Pt core-shell structure copolymer nanometer rods in deionized water；
(3)g-C3N4Preparation of sections
Calcining melamine powder obtains the g-C of block3N4Material, by the g-C of block3N4It is put into test tube, ethylene glycol is added
With after deionized water ultrasound and be vigorously stirred 55-65min, obtain g-C3N4Thin slice solution；
(4)g-C3N4The preparation of/Au@Pt heterojunction photocatalysis material
In g-C3N4Au@Pt core-shell structure copolymer nanometer rods are added in thin slice solution, Au@is formed by chemical bonding and self assembling process
Pt/g-C3N4Composite construction, then low-temperature annealing obtains g-C3N4/ Au@Pt heterojunction photocatalysis material.
Preferably, HAuCl in step (1.1)4Concentration be the concentration of 0.01M, CTAB be 0.1M, NaBH4 solution it is dense
Degree is 0.01M, HAuCl4, CTAB, NaBH4 solution volume ratio be 0.25:9.75:0.6.
Preferably, the concentration of CTAB is 0.1M, HAuCl in step (1.2)4Concentration be 0.01M, AgNO3Concentration be
The concentration of 0.01M, AA are 0.1M；CTAB,HAuCl4、AgNO3, AA volume ratio be 40:2:0.4:0.32.
Preferably, centrifugal speed is 5000-8000 revs/min in step (2.1), centrifugation time 10min.
Preferably, the concentration of CTAB is 0.1M in step (2.2), and the concentration of AA is 0.1M, H2PtCl6Concentration be
0.01M, CTAB, AA, H2PtCl6Volume ratio be 3:0.4:0.02-0.2.
Preferably, centrifugal speed is 5000-8000 revs/min in step (2.3), centrifugation time 10min.
Preferably, the temperature that melamine powder is calcined in step (3) is 400-600 DEG C, calcination time 12h.
Preferably, the volume ratio of ethylene glycol and deionized water is 1:1 in step (3).
Preferably, step (4) increasing annealing temperature is 60-200 DEG C.
Preferably, it is rocked up and down when mixing in step (1.1), the speed rocked up and down is 190-210 beats/min；Step
(1.3) it is rocked up and down when mixing in, the speed rocked up and down is 75-85 beats/min；Stirring rate 600-900 in step (3)
Rev/min, mixing time 55-65min；Ultrasound condition in step (3) are as follows: room temperature ultrasound 55-65min, ultrasonic machine work frequency
Rate 35-45kHz, power 90-110W.
The beneficial effects of the present invention are:
G-C prepared by the present invention3N4/ Au@Pt heterojunction photocatalysis material, this structure is asymmetric, and energy anisotropy passes
The hetero-junctions catalyst passed can greatly enhance g-C first3N4Visible light region absorbs, to promote g-C3N4Electron-hole pair
It generates；Secondly the thermoelectron that the nonradiative transition of Au stick generates is transferred to after the high Pt of photocatalytic activity that directly to participate in photocatalysis anti-
It answers；Furthermore due to the asymmetry of structure, g-C3N4/ Au@Pt hetero-junctions is by g-C3N4The electronics of generation first transitions to Au and turns again
It moves on on Pt, the electron transfer process of this tandem type greatly reduces electron-hole recombination rate, to improve photocatalysis effect
Rate.
Detailed description of the invention
Fig. 1 is g-C3N4The TEM of thin slice is characterized；
The Au@Pt nanometer rods TEM of Fig. 2 difference Pt covering amount is characterized；
The g-C of Fig. 3 difference Pt amount cladding3N4The TEM of/Au@Pt composite material is characterized；
Fig. 4 g-C3N4The Raman Characterization of/Au@Pt heterojunction photocatalysis material；
Fig. 5 g-C3N4The XRD characterization of/Au@Pt heterojunction photocatalysis material；
Fig. 6 g-C3N4The ultraviolet-visible spectrum of/Au@Pt heterojunction photocatalysis material absorbs characterization；
Fig. 7 g-C3N4Map characterization is quenched in the fluorescence spectrum of/Au@Pt heterojunction photocatalysis material；
The preparation technology flow chart of Fig. 8 material of the present invention.
Specific embodiment
A kind of g-C3N4The preparation method of/Au@Pt heterojunction photocatalysis material, the specific steps are as follows:
(1) preparation of Au nanometer rods
Au nanometer rods are prepared according to the seed law first.By HAuCl in the plastic tube of 15ml4(0.01M, 0.25mL) and
CTAB (0.1M, 9.75mL) mixes to obtain mixed solution.Cold NaBH4 solution (0.01M, 0.6mL) is rapidly injected mixed solution
In, mixing 1min (speed rocked up and down is 200 beats/min) is quickly rocked up and down, is used after saving 2h-5h at room temperature
(as seed solution).Then CTAB (0.1M, 40ml), HAuCl are mixed in 50mL plastic tube4(0.01M, 2.0mL) and
AgNO3(0.01M, 0.4mL), it is 1-2 that HCl (1.0M, 0.8mL) adjustment pH value of solution, which is added, adds AA (0.1M, 0.32mL)
(entire mixed solution is as growth solution).It finally takes in seed solution (100 μ L) injection growth-promoting media.Solution is gently shaken up and down
Mixing 20 seconds (speed rocked up and down is 80 beats/min) is shaken, is used after standing at least 6 hours at room temperature.
(2) preparation of Au@Pt core-shell structure copolymer nanometer rods
By the 10ml Au nanometer rods prepared by (5000-8000 revs/min, 10min) precipitating of centrifugation, deionization is used
Water cleaning is primary, and redisperse is in deionized water (10ml).Be added in the above solution CTAB (3mL, 0.1M) and AA (0.4mL,
Mixture 0.1M) adds different amounts of H2PtCl6(20-200 μ L, 0.01M).Then by different Pt+The Au stick of concentration is mixed
Solution is closed to be placed in 60 DEG C of oven 10-14 hours.Finally obtain the Au@Pt core-shell structure copolymer nanorod structure of different Pt contents.Pass through
Centrifugation (5000-8000 revs/min, 10min) is cleaned once with deionized water, and redisperse is in deionized water (10ml).
(3)g-C3N4Preparation of sections
A certain amount of melamine powder (400-600 DEG C, 12h) is calcined first obtains the g-C of block3N4Material weighs 50mg's
Block g-C3N4It is put into the test tube of 50mL, 10ml ethylene glycol and 10mL deionized water solution is added and ultrasound and is vigorously stirred respectively
60min (mixing speed is 600-900 revs/min, room temperature ultrasound, ultrasonic machine working frequency 40kHz, power 100W), obtains g-
C3N4Thin slice.
(4)g-C3N4The preparation of/Au@Pt heterojunction photocatalysis material
In g-C3N410mLAu@Pt core-shell structure copolymer nanometer rods are added in thin slice solution, pass through chemical bonding and self assembling process shape
At Au@Pt/g-C3N4Composite construction, then low-temperature annealing (60-200 DEG C) obtains g-C3N4/ Au@Pt heterojunction photocatalysis material.
A kind of g-C of the invention3N4/ Au@Pt heterojunction photocatalysis material is by previously prepared g-C3N4Thin slice is (as schemed
1) and the Au@Pt core-shell structure copolymer nanometer rods (such as Fig. 2) of Parameter adjustable after self assembly by closely connecting.Then low-temperature annealing generates ginseng
The adjustable g-C of number3N4/ Au@Pt heterojunction structure (such as Fig. 3).G-C of the invention3N4The drawing of/Au@Pt heterojunction photocatalysis material
Graceful characterization (such as Fig. 4) display and pure g-C3N4Sheeting is compared, g-C3N4/ Au@Pt heterojunction structure raman spectrum strength is bright
It is aobvious promoted, it was demonstrated that the optical antenna of Au enhances absorption and scattering process of the composite material to light.G-C of the invention3N4/Au@
The XRD characterization (such as Fig. 5) of Pt heterojunction photocatalysis material is successfully labelled with g-C3N4With the respective phase of Au, the peak for not having a Pt be because
Pt is very low in material content.G-C of the invention3N4The absorption spectrum of/Au@Pt heterojunction photocatalysis material characterizes (such as Fig. 6) into one
Step demonstrates g-C3N4/ Au Pt heterojunction structure is in entire visible and near infrared spectrum section to original g-C3N4Have very
Big absorption is promoted, and can make g-C3N4More electron-hole pairs are generated, strong catalysis reaction is anti-raw.And g- of the invention
C3N4The fluorescence spectrum of/Au@Pt heterojunction photocatalysis material is quenched characterization (such as 7) and shows g-C3N4In/Au@Pt heterojunction material
The compound of electron-hole is effectively reduced in the tandem type transmitting of electronics, and electronics is promoted to participate in catalysis reaction.These structures and optics table
Sign demonstrates g-C3N4The successful preparation of/Au Pt heterojunction photocatalysis material and the heterojunction structure are in photocatalysis (such as water
Cracking, dyestuff degradation) aspect have great potential application.
Claims (10)
1. a kind of g-C3N4The preparation method of/Au@Pt heterojunction photocatalysis material, it is characterised in that: specific step is as follows:
(1) preparation of Au nanometer rods
(1.1) by HAuCl4Mixed solution is mixed to obtain with CTAB, cold NaBH4 solution is rapidly injected in mixed solution, is mixed
0.8-1.2min is used after saving 2-5h at room temperature as seed solution；
(1.2) by CTAB, HAuCl4And AgNO3After mixing, it is 1-2 that HCl adjustment pH value of solution, which is added, is grown after adding AA
Solution；
(1.3) seed solution is injected in growth solution, mixes 18-22 seconds, obtains Au nanometers after standing at least 6h at room temperature
Stick；
(2) preparation of Au@Pt core-shell structure copolymer nanometer rods
(2.1) the Au nanometer rods prepared are cleaned once with deionized water by being centrifuged to obtain precipitating, is redispersed in deionized water
In；
(2.2) mixture of CTAB and AA is added into above-mentioned solution, adds H2PtCl6；
(2.3) it is placed in 55-65 DEG C of oven after 10-14 hours, is centrifuged to obtain precipitating, is cleaned once with deionized water, redisperse
Au@Pt core-shell structure copolymer nanometer rods are obtained in deionized water；
(3)g-C3N4Preparation of sections
Calcining melamine powder obtains the g-C of block3N4Material, by the g-C of block3N4It is put into test tube, ethylene glycol is added and goes
Ultrasound obtains g-C with after stirring respectively after ionized water3N4Thin slice solution；
(4)g-C3N4The preparation of/Au@Pt heterojunction photocatalysis material
In g-C3N4Au@Pt core-shell structure copolymer nanometer rods are added in thin slice solution, Au@Pt/ is formed by chemical bonding and self assembling process
g-C3N4Composite construction, then low-temperature annealing obtains g-C3N4/ Au@Pt heterojunction photocatalysis material.
2. a kind of g-C according to claim 13N4The preparation method of/Au@Pt heterojunction photocatalysis material, feature exist
In: HAuCl in step (1.1)4Concentration be the concentration of 0.01M, CTAB be 0.1M, the concentration of NaBH4 solution is 0.01M,
HAuCl4, CTAB, NaBH4 solution volume ratio be 0.25:9.75:0.6.
3. a kind of g-C according to claim 13N4The preparation method of/Au@Pt heterojunction photocatalysis material, feature exist
In: the concentration of CTAB is 0.1M, HAuCl in step (1.2)4Concentration be 0.01M, AgNO3Concentration be 0.01M, AA concentration
For 0.1M；CTAB,HAuCl4、AgNO3, AA volume ratio be 40:2:0.4:0.32.
4. a kind of g-C according to claim 13N4The preparation method of/Au@Pt heterojunction photocatalysis material, feature exist
In: centrifugal speed is 5000-8000 revs/min in step (2.1), centrifugation time 10min.
5. a kind of g-C according to claim 13N4The preparation method of/Au@Pt heterojunction photocatalysis material, feature exist
In: the concentration of CTAB is 0.1M in step (2.2), and the concentration of AA is 0.1M, H2PtCl6Concentration be 0.01M, CTAB, AA,
H2PtCl6Volume ratio be 3:0.4:0.02-0.2.
6. a kind of g-C according to claim 13N4The preparation method of/Au@Pt heterojunction photocatalysis material, feature exist
In: centrifugal speed is 5000-8000 revs/min in step (2.3), centrifugation time 10min.
7. a kind of g-C according to claim 13N4The preparation method of/Au@Pt heterojunction photocatalysis material, feature exist
In: the temperature that melamine powder is calcined in step (3) is 400-600 DEG C, calcination time 12h.
8. a kind of g-C according to claim 13N4The preparation method of/Au@Pt heterojunction photocatalysis material, feature exist
In: the volume ratio of ethylene glycol and deionized water is 1:1 in step (3).
9. a kind of g-C according to claim 13N4The preparation method of/Au@Pt heterojunction photocatalysis material, feature exist
In: annealing temperature is 60-200 DEG C in step (4).
10. a kind of g-C according to claim 13N4The preparation method of/Au@Pt heterojunction photocatalysis material, feature exist
In: it is rocked up and down when mixing in step (1.1), the speed rocked up and down is 190-210 beats/min；In step (1.3) when mixing
It rocks up and down, the speed rocked up and down is 75-85 beats/min；600-900 revs/min of stirring rate in step (3), when stirring
Between be 55-65min；Ultrasound condition in step (3) are as follows: room temperature ultrasound 55-65min, ultrasonic machine working frequency 35-45kHz, power
90-110W。
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| CN112169754A (en) * | 2020-09-22 | 2021-01-05 | 北京化工大学 | PDDA (polymeric dimethyl DA) protonated graphite phase carbon nitride and preparation method and application thereof |
| CN112546976A (en) * | 2020-11-13 | 2021-03-26 | 哈尔滨工业大学 | Preparation method of carbon nitride based cathode-anode type visible light driven colloid motor |
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