CN115318320B - Preparation method of carbon nitride nanosheet-loaded titanium carbide nanocomposite - Google Patents
Preparation method of carbon nitride nanosheet-loaded titanium carbide nanocomposite Download PDFInfo
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- 239000002135 nanosheet Substances 0.000 title claims abstract description 45
- 239000002114 nanocomposite Substances 0.000 title claims abstract description 23
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 title claims abstract description 23
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims description 9
- 239000010936 titanium Substances 0.000 claims abstract description 79
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 30
- 239000002096 quantum dot Substances 0.000 claims abstract description 29
- 238000001035 drying Methods 0.000 claims abstract description 23
- 238000005406 washing Methods 0.000 claims abstract description 19
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001354 calcination Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000002064 nanoplatelet Substances 0.000 claims abstract description 12
- 239000002243 precursor Substances 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 239000012299 nitrogen atmosphere Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- 229920000877 Melamine resin Polymers 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 5
- 239000004202 carbamide Substances 0.000 claims description 5
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 4
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- 239000010439 graphite Substances 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- -1 polytetrafluoroethylene Polymers 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
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- 238000009210 therapy by ultrasound Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002055 nanoplate Substances 0.000 description 3
- 238000001291 vacuum drying Methods 0.000 description 3
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- 230000003197 catalytic effect Effects 0.000 description 1
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- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
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Classifications
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- 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
-
- 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
- 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 disclosure discloses a method for preparing a carbon nitride nanosheet-loaded titanium carbide nanocomposite, comprising: s100: to a certain amount of Ti 3 AlC 2 Placing the powder into hydrofluoric acid solution, stirring, centrifuging, washing with water, and drying to obtain bulk Ti 3 C 2 The method comprises the steps of carrying out a first treatment on the surface of the S200: to block Ti 3 C 2 Dispersing in dimethyl sulfoxide, ultrasonic treating under nitrogen atmosphere, centrifuging, cleaning, and drying to obtain Ti 3 C 2 A nanosheet; s300: will g-C 3 N 4 Calcining the precursor, preserving heat, naturally cooling, and grinding to obtain g-C 3 N 4 A powder; s400: ti is mixed with 3 C 2 Nanoplatelets and g-C 3 N 4 Mixing the powder and then carrying out hydrothermal reaction to obtain Ti 3 C 2 Quantum dot/g-C 3 N 4 Nanosheet solution, ti 3 C 2 Quantum dot/g-C 3 N 4 Centrifuging, washing and drying the nano-sheet solution to obtain Ti 3 C 2 /g‑C 3 N 4 A nanocomposite.
Description
Technical Field
The disclosure belongs to the technical field of preparation of nano materials, and particularly relates to a preparation method of a carbon nitride nano sheet loaded titanium carbide nano composite material.
Background
Graphite phase carbon nitride (g-C) 3 N 4 ) The material has typical semiconductor absorption characteristics, the spectral bandwidth is about 420nm, the forbidden bandwidth is 2.7eV, the absorption spectrum can be extended to the visible light region,and has high thermal stability and chemical stability, low raw material price and wide sources, and shows wide application prospect in the field of photocatalysis. But conventional g-C 3 N 4 The problems of low specific surface area, weak visible light absorption capability, rapid recombination rate of photo-generated electrons and holes and the like need to be solved, so that various structures and morphology modification methods are needed to improve the performance of the material.
Disclosure of Invention
Aiming at the defects in the prior art, the aim of the present disclosure is to provide a preparation method of a titanium carbide nano composite material loaded by carbon nitride nano sheets, wherein titanium carbide quantum dots are uniformly loaded on graphite phase carbon nitride nano sheets by a one-step hydrothermal method, the reaction time is short, and the preparation flow is simple.
In order to achieve the above object, the present disclosure provides the following technical solutions:
a preparation method of a carbon nitride nano-sheet loaded titanium carbide nano-composite material comprises the following steps:
s100: to a certain amount of Ti 3 AlC 2 Placing the powder into hydrofluoric acid solution, stirring, centrifuging, washing with water, and drying to obtain bulk Ti 3 C 2 ；
S200: to block Ti 3 C 2 Dispersing in dimethyl sulfoxide, ultrasonic treating under nitrogen atmosphere, centrifuging, cleaning, and drying to obtain Ti 3 C 2 A nanosheet;
s300: will g-C 3 N 4 Calcining the precursor, preserving heat, naturally cooling, and grinding to obtain g-C 3 N 4 A powder;
s400: ti is mixed with 3 C 2 Nanoplatelets and g-C 3 N 4 Mixing the powder and then carrying out hydrothermal reaction to obtain Ti 3 C 2 Quantum dot/g-C 3 N 4 Nanosheet solution, ti 3 C 2 Quantum dot/g-C 3 N 4 Centrifuging, washing and drying the nano-sheet solution to obtain Ti 3 C 2 /g-C 3 N 4 A nanocomposite.
Preferably, in step S200, the bulk Ti 3 C 2 The mass of (2) was 0.2g.
Preferably, in step S300, the g-C 3 N 4 The precursors include melamine and urea.
Preferably, in step S300, the g-C 3 N 4 The calcination temperature of the precursor is 400-600 ℃.
Preferably, in step S300, the g-C 3 N 4 The calcination time of the precursor is 4-6 hours.
Preferably, in step S400, the reaction temperature of the hydrothermal reaction is 100-120 ℃.
Preferably, in step S400, the hydrothermal reaction time is 6-8 hours.
Preferably, in step S400, ti 3 C 2 Nanoplatelets and g-C 3 N 4 The mass ratio of the powder is 1.6-3.2:1.
Compared with the prior art, the beneficial effects that this disclosure brought are:
1. the method uniformly loads the titanium carbide quantum dots on the graphite phase carbon nitride nano-sheet by adopting a one-step hydrothermal method, has short reaction time and simple preparation flow, and is suitable for large-scale industrial production.
2. The present disclosure can control the load ratio by adjusting the amounts of titanium carbide nanoplates and graphite phase carbon nitride nanoplates.
Drawings
FIG. 1 is a flow chart of a method for preparing a carbon nitride nanosheet-loaded titanium carbide nanocomposite, provided in one embodiment of the present disclosure;
FIG. 2 is a transmission electron microscope image of titanium carbide quantum dots supported by carbon nitride nanoplatelets in example 1;
FIG. 3 is a transmission electron microscope image of titanium carbide quantum dots supported by carbon nitride nanoplatelets in example 2;
FIG. 4 is a transmission electron microscope image of the titanium carbide quantum dots supported by the carbon nitride nanoplatelets in example 3;
fig. 5 is a transmission electron microscope image of the titanium carbide quantum dot supported by the carbon nitride nano-sheet in example 4.
Detailed Description
Specific embodiments of the present disclosure will be described in detail below with reference to fig. 1 to 5. While specific embodiments of the disclosure are shown in the drawings, it should be understood that the disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It should be noted that certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will understand that a person may refer to the same component by different names. The specification and claims do not identify differences in terms of components, but rather differences in terms of the functionality of the components. As used throughout the specification and claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description hereinafter sets forth the preferred embodiments for carrying out the present disclosure, but is not intended to limit the scope of the disclosure in general, as the description proceeds. The scope of the present disclosure is defined by the appended claims.
For the purposes of promoting an understanding of the embodiments of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific examples, without the intention of being limiting the embodiments of the disclosure.
In one embodiment, as shown in fig. 1, the present disclosure provides a method for preparing a carbon nitride nanosheet-loaded titanium carbide nanocomposite, comprising the steps of:
s100: to a certain amount of Ti 3 AlC 2 Placing the powder into hydrofluoric acid solution, stirring, centrifuging, washing with water, and drying to obtain bulk Ti 3 C 2 ；
S200: to block Ti 3 C 2 Dispersing in dimethyl sulfoxide, ultrasonic treating under nitrogen atmosphere, centrifuging, cleaning, and drying to obtain Ti 3 C 2 A nanosheet;
s300: will g-C 3 N 4 Calcining precursor, insulating and self-heatingThen cooling and grinding to obtain g-C 3 N 4 A powder;
s400: s400: ti is mixed with 3 C 2 Nanoplatelets and g-C 3 N 4 Mixing the powder and then carrying out hydrothermal reaction to obtain Ti 3 C 2 Quantum dot/g-C 3 N 4 Nanosheet solution, ti 3 C 2 Quantum dot/g-C 3 N 4 Centrifuging, washing and drying the nano-sheet solution to obtain Ti 3 C 2 /g-C 3 N 4 A nanocomposite.
The transition metal carbide material Ti used in this example 3 C 2 There is a great interest in the field of photocatalysis due to its surface hydrophilicity, chemical stability, good electrical conductivity, and excellent visible light capturing ability. At Ti 3 C 2 With g-C 3 N 4 g-C formed after hydrothermal reaction of precursor 3 N 4 /Ti 3 C 2 In the heterostructure, a Schottky junction is formed on the contact surface of the two materials, so that the generation of photo-generated electrons from g-C is promoted 3 N 4 Migration to Ti 3 C 2 So that the fermi levels of the two reach an equilibrium state. With Ti 3 C 2 Compared with nano-sheet, ti 3 C 2 The quantum dots have richer active sites, and Ti is added into the quantum dots 3 C 2 The quantum dots are uniformly loaded on the g-C 3 N 4 On the nano-sheet, ti is used for 3 C 2 The quantum dots are used as electron acceptors, so that the separation of photon-generated carriers can be promoted, and the catalytic efficiency is further improved.
Example 1
1. 1.0g of Ti is weighed 3 AlC 2 The powder is put into a concentration of 40% (if the concentration is less than 40%, the Ti cannot be obtained) 3 AlC 2 Etching powder into block Ti 3 C 2 The purpose of (2); if the concentration is higher than 40%, the experimental safety is reduced and the experimental cost is increased due to the strong corrosiveness of hydrofluoric acid), the mixture is stirred for 24 hours in a hydrofluoric acid solution, centrifuged at 10000r/min, washed with water for 5 times and dried to obtain blocky Ti 3 C 2 ；
2. Weighing 0.2g of blocky Ti 3 C 2 Put into 20mL of dimethyl sulfoxide, and treated by ultrasonic treatment under nitrogen atmosphere for 12 hours to obtain bulk Ti 3 C 2 Fully dispersing in dimethyl sulfoxide, centrifuging at 6000r/min, washing with alcohol for 5 times to remove excessive dimethyl sulfoxide, and drying to obtain Ti 3 C 2 A nanosheet;
3. 10g of urea is weighed and placed in a muffle furnace, the temperature is increased to 400 ℃ at the speed of 2.5 ℃/min for calcination (if the calcination temperature is lower than 400 ℃, the reaction is incomplete), the urea is naturally cooled to room temperature after being preserved for 4 hours, and the g-C is obtained by grinding 3 N 4 A powder;
4. will be 0.5g g-C 3 N 4 Powder and 0.8g Ti 3 C 2 Mixing the nano-sheets, dissolving in 20ml of water, placing in a reaction kettle with polytetrafluoroethylene as a substrate at 100 ℃ (if the temperature is lower than 100 ℃, the required time of the hydrothermal reaction can be prolonged, and the reaction is incomplete), and performing the hydrothermal reaction for 6 hours to obtain Ti 3 C 2 Quantum dot/g-C 3 N 4 Nanosheet solution, ti 3 C 2 Quantum dot/g-C 3 N 4 Centrifuging at 6000r/min for 3min to remove solvent, washing with water for 3 times, and drying in vacuum drying oven at 80deg.C for 12 hr to obtain Ti 3 C 2 /g-C 3 N 4 A nanocomposite.
Ti obtained in this example 3 C 2 /g-C 3 N 4 The transmission electron microscope of the nanocomposite is shown in FIG. 2, and as can be seen from FIG. 2, ti 3 C 2 The quantum dots are loaded on g-C 3 N 4 On the nanoplatelets.
Example 2:
1. 1.0g of Ti is weighed 3 AlC 2 Adding the powder into 40% hydrofluoric acid solution, stirring for 24 hr, centrifuging at 10000r/min, washing with water for 5 times, and drying to obtain bulk Ti 3 C 2 ；
2. Weighing 0.2g of blocky Ti 3 C 2 Put into 20mL of dimethyl sulfoxide, and treated by ultrasonic treatment under nitrogen atmosphere for 12 hours to obtain bulk Ti 3 C 2 Sufficiently dispersed in the dimethyl methyleneCentrifuging in sulfone at 6000r/min, washing with ethanol for 5 times to remove excessive dimethyl sulfoxide, and drying to obtain Ti 3 C 2 A nanosheet;
3. weighing 10g of urea, placing in a muffle furnace, heating to 500 ℃ at a speed of 2.5 ℃/min, calcining, preserving heat for 4 hours, naturally cooling to room temperature, and grinding to obtain g-C 3 N 4 A powder;
4. will be 0.25g g-C 3 N 4 Powder and 0.8g Ti 3 C 2 Mixing the nano-sheets, dissolving in 20ml of water, then placing in a reaction kettle taking polytetrafluoroethylene as a substrate at 100 ℃ for hydrothermal reaction, and reacting for 6 hours to obtain Ti 3 C 2 Quantum dot/g-C 3 N 4 Nanosheet solution, ti 3 C 2 Quantum dot/g-C 3 N 4 Centrifuging at 6000r/min for 3min to remove solvent, washing with water for 3 times, and drying in vacuum drying oven at 80deg.C for 12 hr to obtain Ti 3 C 2 /g-C 3 N 4 A nanocomposite.
Ti obtained in this example 3 C 2 /g-C 3 N 4 The transmission electron microscope image of the nanocomposite is shown in FIG. 3, due to g-C 3 N 4 The mass of the powder is reduced compared to example 1, thus resulting in g-C in the composite 3 N 4 Ratio of nanosheets decreases and Ti 3 C 2 As can be seen from FIG. 3, the ratio of quantum dots increases, and the load is g-C 3 N 4 Ti on nanosheets 3 C 2 The number of quantum dots is increased compared to fig. 2.
Example 3:
1. 1.0g of Ti is weighed 3 AlC 2 Adding the powder into 40% hydrofluoric acid solution, stirring for 24 hr, centrifuging at 10000r/min, washing with water for 5 times, and drying to obtain bulk Ti 3 C 2 ；
2. Weighing 0.2g of blocky Ti 3 C 2 Put into 20mL of dimethyl sulfoxide, and treated by ultrasonic treatment under nitrogen atmosphere for 12 hours to obtain bulk Ti 3 C 2 Fully dispersed in dimethyl sulfoxide, and then at a rotating speed of 6000r/minCentrifuging and washing with ethanol for 5 times to remove excessive dimethyl sulfoxide, and drying to obtain Ti 3 C 2 A nanosheet;
3. weighing 5g of melamine, placing in a muffle furnace, heating to 550 ℃ at a speed of 2.5 ℃/min, calcining, preserving heat for 5 hours, naturally cooling to room temperature, and grinding to obtain g-C 3 N 4 A powder;
4. will be 0.5g g-C 3 N 4 Powder and 0.8g Ti 3 C 2 Mixing the nano-sheets, dissolving in 20ml of water, then placing in a reaction kettle with polytetrafluoroethylene as a substrate at 110 ℃ for hydrothermal reaction, and reacting for 7 hours to obtain Ti 3 C 2 Quantum dot/g-C 3 N 4 Nanosheet solution, ti 3 C 2 Quantum dot/g-C 3 N 4 Centrifuging at 6000r/min for 3min to remove solvent, washing with water for 3 times, and drying in vacuum drying oven at 80deg.C for 12 hr to obtain Ti 3 C 2 /g-C 3 N 4 A nanocomposite.
Ti obtained in this example 3 C 2 /g-C 3 N 4 As can be seen from FIG. 4, the transmission electron microscope of the nanocomposite is shown in FIG. 4, and compared with example 2, since melamine is used in this example, ti is formed 3 C 2 /g-C 3 N 4 g-C in nanocomposite 3 N 4 The structure of the nano-sheet is loose.
Example 4:
1. 1.0g of Ti is weighed 3 AlC 2 Adding the powder into 40% hydrofluoric acid solution, stirring for 24 hr, centrifuging at 10000r/min, washing with water for 5 times, and drying to obtain bulk Ti 3 C 2 ；
2. Weighing 0.2g of blocky Ti 3 C 2 Put into 20mL of dimethyl sulfoxide, and treated by ultrasonic treatment under nitrogen atmosphere for 12 hours to obtain bulk Ti 3 C 2 Fully dispersing in dimethyl sulfoxide, centrifuging at 6000r/min, washing with alcohol for 5 times to remove excessive dimethyl sulfoxide, and drying to obtain Ti 3 C 2 A nanosheet;
3. weighing 5g of melamine, placing in a muffle furnace, heating to 600 ℃ at a speed of 2.5 ℃/min for calcination (if the temperature is higher than 600 ℃, the calcination effect is basically consistent with 600 ℃ but the energy consumption is more, so that the temperature does not need to be increased to higher), preserving heat for 6 hours, naturally cooling to room temperature, and grinding to obtain g-C 3 N 4 A powder;
4. will be 0.25g g-C 3 N 4 Powder and 0.8g Ti 3 C 2 The nano-sheets are mixed and dissolved in 20ml of water, then the mixture is placed in a reaction kettle which takes polytetrafluoroethylene as a substrate for hydrothermal reaction at 120 ℃ (if the temperature is higher than 120 ℃, the reaction result has no obvious change and the energy consumption is more), and the Ti is obtained after 8 hours of reaction 3 C 2 Quantum dot/g-C 3 N 4 Nanosheet solution, ti 3 C 2 Quantum dot/g-C 3 N 4 Centrifuging at 6000r/min for 3min to remove solvent, washing with water for 3 times, and drying in vacuum oven at 100deg.C for 12 hr to obtain Ti 3 C 2 /g-C 3 N 4 A nanocomposite.
Ti obtained in this example 3 C 2 /g-C 3 N 4 The transmission electron microscope image of the nanocomposite is shown in FIG. 5, due to g-C 3 N 4 The mass of the powder is reduced compared to example 3, thus resulting in g-C in the composite 3 N 4 Ratio of nanosheets decreases and Ti 3 C 2 As can be seen from FIG. 5, the ratio of quantum dots increases, and the load is g-C 3 N 4 Ti on nanosheets 3 C 2 The number of quantum dots is increased compared to fig. 4.
In the above embodiment, ti 3 C 2 Nanoplatelets and g-C 3 N 4 The mass ratio of the powder is limited to a certain range, and if it is smaller than this ratio, the reaction results in Ti 3 C 2 Quantum dots are too small to be loaded on g-C 3 N 4 On the nanoplatelets. If it is larger than this ratio, ti is caused 3 C 2 The nanoplates cannot fully react to form Ti 3 C 2 Quantum dots, thereby resulting in unreacted complete Ti 3 C 2 Nanometer scaleTablet and g-C 3 N 4 Nano-sheet composite without complete Ti acquisition 3 C 2 /g-C 3 N 4 A nanocomposite.
The above general description of the present application and the description of specific embodiments thereof should not be construed as limiting the scope of the present disclosure. Those skilled in the art can add, subtract or combine the features disclosed in the foregoing general description and/or the specific embodiments (including examples) to form other technical solutions within the scope of the present application without departing from the disclosure of the present application.
Claims (8)
1. A preparation method of a carbon nitride nano-sheet loaded titanium carbide nano-composite material comprises the following steps:
s100: to a certain amount of Ti 3 AlC 2 Placing the powder into hydrofluoric acid solution, stirring, centrifuging, washing with water, and drying to obtain bulk Ti 3 C 2 ；
S200: to block Ti 3 C 2 Dispersing in dimethyl sulfoxide, ultrasonic treating under nitrogen atmosphere, centrifuging, cleaning, and drying to obtain Ti 3 C 2 A nanosheet;
s300: will g-C 3 N 4 Calcining the precursor, preserving heat, naturally cooling, and grinding to obtain g-C 3 N 4 A powder;
s400: ti is mixed with 3 C 2 Nanoplatelets and g-C 3 N 4 Mixing the powder and then carrying out hydrothermal reaction to obtain Ti 3 C 2 Quantum dot/g-C 3 N 4 Nanosheet solution, ti 3 C 2 Quantum dot/g-C 3 N 4 Centrifuging, washing and drying the nano-sheet solution to obtain Ti 3 C 2 Quantum dot and g-C 3 N 4 Ti with Schottky junction formed on contact surface of nano-sheet 3 C 2 /g-C 3 N 4 A nanocomposite.
2. According to claimThe method of claim 1, wherein, preferably, in step S200, the bulk Ti 3 C 2 The mass of (2) was 0.2g.
3. The method according to claim 1, wherein in step S300, the g-C 3 N 4 The precursors include melamine and urea.
4. The method according to claim 1, wherein in step S300, the g-C 3 N 4 The calcination temperature of the precursor is 400-600 ℃.
5. The method according to claim 1, wherein in step S300, the g-C 3 N 4 The calcination time of the precursor is 4-6 hours.
6. The method according to claim 1, wherein in step S400, the reaction temperature of the hydrothermal reaction is 100-120 ℃.
7. The method according to claim 1, wherein in step S400, the hydrothermal reaction time is 6-8 hours.
8. The method according to claim 1, wherein in step S400, ti 3 C 2 Nanoplatelets and g-C 3 N 4 The mass ratio of the powder is 1.6-3.2:1.
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