CN112397728A - Preparation method of Co and Fe element modified graphite-phase carbon nitride and graphene oxide fuel cell cathode catalyst - Google Patents
Preparation method of Co and Fe element modified graphite-phase carbon nitride and graphene oxide fuel cell cathode catalyst Download PDFInfo
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- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 44
- 239000000446 fuel Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
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- 238000000034 method Methods 0.000 claims abstract description 7
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- 239000002243 precursor Substances 0.000 claims abstract description 5
- 230000002195 synergetic effect Effects 0.000 claims abstract description 5
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 5
- 239000000376 reactant Substances 0.000 claims description 43
- 238000005303 weighing Methods 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 18
- 229910021580 Cobalt(II) chloride Inorganic materials 0.000 claims description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 10
- 239000004202 carbamide Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 238000004108 freeze drying Methods 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 238000005245 sintering Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 238000005554 pickling Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 238000001878 scanning electron micrograph Methods 0.000 claims description 3
- 229910021577 Iron(II) chloride Inorganic materials 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 239000012300 argon atmosphere Substances 0.000 claims description 2
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 claims description 2
- 239000002086 nanomaterial Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 238000006722 reduction reaction Methods 0.000 abstract description 4
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 238000001027 hydrothermal synthesis Methods 0.000 abstract description 2
- 238000013112 stability test Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
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- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical group N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/8647—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9075—Catalytic material supported on carriers, e.g. powder carriers
- H01M4/9083—Catalytic material supported on carriers, e.g. powder carriers on carbon or graphite
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M2004/8678—Inert electrodes with catalytic activity, e.g. for fuel cells characterised by the polarity
- H01M2004/8684—Negative electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention discloses a preparation method of a Co and Fe element modified graphite-like carbon nitride and graphene oxide fuel cell cathode catalyst3N4Doping Co and Fe elements in the synthesis process by taking the graphene oxide and the graphene oxide as precursors, wherein the Co and Fe elements have synergistic effect with g-C3N4And the porosity and functionality of the graphene oxide, thereby preparing Fe-Co-g-C3N4The @ rGO catalyst has excellent electrochemical performance. The invention has the advantages that the hydrothermal method is simple in preparation method, the reaction temperature is low, the subsequent treatment condition is not needed, the composite material has excellent catalytic activity and stability for the oxygen reduction reaction, and the Fe-Co-g-C prepared by the invention3N4The @ rGO catalyst can be used in the fields of fuel cell cathode catalysts and the like.
Description
Technical Field
The invention relates to a preparation method of a Co and Fe element modified graphite-phase carbon nitride and graphene oxide fuel cell cathode catalyst.
Background
ORR is used as the cathode reaction of various fuel cells and metal cells, the reaction path is complex, the overpotential is high, the slow reaction kinetic process needs a high-efficiency ORR electrocatalyst for catalysis, and the platinum (Pt) based catalyst which is widely commercialized at present has high cost and poor stability. Therefore, the preparation of a cathode oxygen reduction catalyst that is efficient, stable, low cost, and highly selective is a key approach to the commercialization of fuel cells.
Graphitized carbon nitride (g-C)3N4) The polymer has a graphitic sp2The composite material is combined with a C-N structure, and is a promising catalytic material in the fields of photocatalytic hydrogen production, metal-free heterogeneous catalysis of various organic systems, oxygen reduction fuel cells and the like due to the specific thermal stability, proper electronic structure and low-cost preparation. In particular g-C3N4Contains a so-called "nitrogen can" which is rich in melon parts and is a potentially ideal site for modifying the electronic structure of a molecule and its original properties. Graphene has a larger specific surface area, better thermal and electrical conductivity, and faster charge mobility, which is typically sp2The structural material, which has excellent electron conductivity and environmental friendliness, is considered to be an excellent candidate material for constructing a catalyst or a carbon support, and is important for various energy conversion and storage devices. Thus, graphene and g-C are combined3N4The combination of these two homogeneous structures can combine their respective advantages to provide a composite material with enhanced or unique properties.
Disclosure of Invention
The invention aims to provide a preparation method of a Co and Fe element modified graphite-phase carbon nitride and graphene oxide fuel cell cathode catalyst.
The object of the invention is achieved byThe scheme is realized as follows: preparation method of Co and Fe element modified graphite-like phase carbon nitride and graphene oxide fuel cell cathode catalyst, wherein the graphite-like phase carbon nitride is g-C3N4Characterized by using C under hydrothermal conditions3N4Doping Co and Fe elements in the synthesis process by taking the graphene oxide and the graphene oxide as precursors, wherein the Co and Fe elements have synergistic effect with g-C3N4And the porosity and functionality of the graphene oxide, thereby preparing Fe-Co-g-C3N4The @ rGO catalyst has excellent electrochemical performance and comprises the following steps:
(1) firstly weighing 40-60g of urea, and sintering at 500 ℃ in a muffle furnace at a heating rate of 2-5 ℃/min for 2-5 h to obtain light yellow C3N4Powder;
(2) respectively weighing 0.1 g-0.3 g of FeCl2•4H2O、CoCl2•6H2O and 0.1-0.5 g of C3N4Placing the graphene oxide powder into a beaker, and then weighing 0.02 g-0.1 g of graphene oxide and placing the graphene oxide powder into the beaker;
(3) adding 20ml of deionized water into the raw materials, and stirring the solution in a water bath at the temperature of 80 ℃ for 2 hours;
(4) freeze-drying the reactant, putting the reactant into a tubular furnace filled with Ar, heating the reactant to 600 ℃ at the speed of 5 ℃/min, preserving the heat for 5 hours, and cooling the reactant to room temperature;
(5) pickling and drying the sample to obtain the final sample Fe-Co-g-C3N4@ rGO catalyst.
In step (4), magnesium powder of 5% by weight of the sample is added to the sample during heating at 600 ℃ in an argon atmosphere.
Discloses a Co and Fe element modified g-C3N4Preparation method of fuel cell cathode catalyst with graphene oxide, wherein C is utilized under hydrothermal condition3N4Doping Co and Fe elements in the synthesis process by taking the graphene oxide and the graphene oxide as precursors, wherein the Co and Fe elements have synergistic effect with g-C3N4The porosity and functionality of the graphene oxide, thereby obtaining the Fe-Co-g-C3N4The @ rGO catalyst has excellent electrochemical performance. The method for preparing the catalyst can be further developed and applied in the field of preparation of other materials.
The invention has the advantages that the hydrothermal method is simple in preparation method, the reaction temperature is low, the subsequent treatment condition is not needed, the composite material has excellent catalytic activity and stability for the oxygen reduction reaction, and the Fe-Co-g-C prepared by the invention3N4The @ rGO catalyst can be used in the fields of fuel cell cathode catalysts and the like.
Drawings
FIG. 1 shows Fe-Co-g-C3N4SEM image of @ rGO catalyst.
Detailed Description
Example 1:
co and Fe element modified graphite-like phase carbon nitride and graphene oxide fuel cell cathode catalyst, wherein the graphite-like phase carbon nitride is g-C3N4Under hydrothermal conditions, using C3N4Doping Co and Fe elements in the synthesis process by taking the graphene oxide and the graphene oxide as precursors, and utilizing the synergistic effect of the Co and Fe elements and g-C3N4And the porosity and functionality of the graphene oxide, thereby preparing the Fe-Co-g-C with excellent electrochemical performance3N4The @ rGO catalyst is prepared by the following steps:
(1) weighing 40g of urea, sintering at 500 ℃ in a muffle furnace at a temperature rise speed of 2 ℃/min for 2h to obtain light yellow C3N4Powder;
(2) 0.1g of FeCl was weighed out separately2•4H2O, 0.1g of CoCl2•6H2O with 0.1g of C3N4Placing the graphene oxide powder into a beaker, and then weighing 0.02g of graphene oxide to place the graphene oxide powder into the beaker;
(3) adding 20ml of deionized water into the beaker in which the raw materials are placed in the step (2), and stirring the solution in a water bath at the temperature of 80 ℃ for 2 hours to obtain a hydrothermal reactant;
(4) freeze-drying the reactant, putting the reactant into a tubular furnace filled with Ar, heating the reactant to 600 ℃ at the speed of 5 ℃/min, preserving the heat for 5 hours, and cooling the reactant to room temperature;
(5) pickling and drying the sample to obtain the final sample Fe-Co-g-C3N4@ rGO catalyst, Fe-Co-g-C3N4The SEM image of the @ rGO catalyst is shown in FIG. 1, and it can be seen from the image that the surface of the obtained material is self-assembled by a horn-shaped nano structure.
After the catalyst obtained in the embodiment is subjected to a stability test for 200 circles in a potential area of 0-1.3V (vs RHE), the electrochemical surface area is lost by about 10.3%, which shows that the catalyst has very good electrochemical stability.
Example 2:
a fuel cell cathode catalyst of Co and Fe element modified graphite-like carbon nitride and graphene oxide is prepared by the following steps similar to example 1:
(1) firstly weighing 60g of urea, and sintering at 500 ℃ in a muffle furnace at the heating rate of 5 ℃/min for 5h to obtain light yellow C3N4Powder;
(2) 0.3g of FeCl was weighed out separately2•4H2O, 0.3g of CoCl2•6H2O with 0.5g of C3N4Placing the graphene oxide powder into a beaker, and then weighing 0.1g of graphene oxide to place the graphene oxide powder into the beaker;
(3) adding 20ml of deionized water into the raw materials, and stirring the solution in a water bath at the temperature of 80 ℃ for 2 hours;
(4) freeze-drying the reactant, putting the reactant into a tubular furnace filled with Ar, heating the reactant to 600 ℃ at the speed of 5 ℃/min, preserving the heat for 5 hours, and cooling the reactant to room temperature;
(5) pickling and drying the sample to obtain the final sample Fe-Co-g-C3N4@ rGO catalyst.
In the embodiment, after the obtained catalyst is subjected to a stability test for 200 circles in a potential area of 0-1.3V (vs RHE), the electrochemical surface area loss is about 9.8%, which shows that the catalyst has very good electrochemical stability.
Example 3:
a fuel cell cathode catalyst of Co and Fe element modified graphite-like carbon nitride and graphene oxide is prepared by the following steps similar to example 1:
(1) firstly weighing 50g of urea, and sintering at 500 ℃ in a muffle furnace at the heating rate of 3 ℃/min for 3h to obtain light yellow C3N4Powder;
(2) 0.2g of FeCl was weighed out separately2•4H2O, 0.2g of CoCl2•6H2O with 0.3g of C3N4Placing the graphene oxide powder into a beaker, and then weighing 0.06g of graphene oxide to place the graphene oxide powder into the beaker;
(3) adding 20ml of deionized water into the raw materials, and stirring the solution in a water bath at the temperature of 80 ℃ for 2 hours;
(4) freeze-drying the reactant, putting the reactant into a tubular furnace filled with Ar, heating the reactant to 600 ℃ at the speed of 5 ℃/min, preserving the heat for 5 hours, and cooling the reactant to room temperature;
(5) pickling and drying the sample to obtain the final sample Fe-Co-g-C3N4@ rGO catalyst.
After the catalyst obtained in the embodiment is subjected to a stability test for 200 circles in a potential area of 0-1.3V (vs RHE), the electrochemical surface area is lost by about 13.5%, which shows that the catalyst has very good electrochemical stability.
Example 4:
a fuel cell cathode catalyst of Co and Fe element modified graphite-like carbon nitride and graphene oxide is prepared by the following steps similar to example 1:
(1) firstly weighing 50g of urea, and sintering at 500 ℃ in a muffle furnace at the heating rate of 2 ℃/min for 2h to obtain light yellow C3N4Powder;
(2) 0.3g of FeCl was weighed out separately2•4H2O, 0.3g of CoCl2•6H2O with 0.45g of C3N4Placing the graphene oxide powder into a beaker, and then weighing 0.05g of graphene oxide to place the graphene oxide powder into the beaker;
(3) adding 20ml of deionized water into the raw materials, and stirring the solution in a water bath at the temperature of 80 ℃ for 2 hours;
(4) freeze-drying the reactant, putting the reactant into a tubular furnace filled with Ar, heating the reactant to 600 ℃ at the speed of 5 ℃/min, preserving the heat for 5 hours, and cooling the reactant to room temperature;
(5) pickling and drying the sample to obtain the final sample Fe-Co-g-C3N4@ rGO catalyst.
After the catalyst obtained in the embodiment is subjected to a stability test for 200 circles in a potential area of 0-1.3V (vs RHE), the electrochemical surface area loss is about 9.7%, which shows that the catalyst has very good electrochemical stability.
The embodiments described above are described to facilitate an understanding and appreciation of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications to the present invention based on the disclosure of the present invention within the protection scope of the present invention.
Claims (6)
1. Preparation method of Co and Fe element modified graphite-like phase carbon nitride and graphene oxide fuel cell cathode catalyst, wherein the graphite-like phase carbon nitride is g-C3N4Characterized by using C under hydrothermal conditions3N4Doping Co and Fe elements in the synthesis process by taking the graphene oxide and the graphene oxide as precursors, and utilizing the synergistic effect of the Co and Fe elements and g-C3N4And the porosity and functionality of the graphene oxide, thereby preparing the Fe-Co-g-C with excellent electrochemical performance3N4A @ rGO catalyst comprising the steps of:
(1) firstly weighing 40-60g of urea, and sintering at 500 ℃ in a muffle furnace at a heating rate of 2-5 ℃/min for 2-5 h to obtain light yellow C3N4Powder;
(2) respectively weighing 0.1 g-0.3 g of FeCl2•4H2O、CoCl2•6H2O and 0.1-0.5 g of C3N4Placing the graphene oxide powder into a beaker, and then weighing 0.02 g-0.1 g of graphene oxide and placing the graphene oxide powder into the beaker;
(3) adding 20ml of deionized water into the beaker in which the raw materials are placed in the step (2), and stirring the solution in a water bath at the temperature of 80 ℃ for 2 hours to obtain a hydrothermal reactant;
(4) freeze-drying the reactant, putting the reactant into a tubular furnace filled with Ar, heating the reactant to 600 ℃ at the speed of 5 ℃/min, preserving the heat for 5 hours, and cooling the reactant to room temperature;
(5) pickling and drying the sample to obtain the final sample Fe-Co-g-C3N4@ rGO catalyst.
2. The preparation method of the Co and Fe element modified graphite-phase carbon nitride and graphene oxide fuel cell anode catalyst according to claim 1 is characterized in that: in step (4), magnesium powder of 5% by weight of the sample is added to the sample during heating at 600 ℃ in an argon atmosphere.
3. The preparation method of the Co and Fe element modified graphite-phase carbon nitride and graphene oxide fuel cell anode catalyst according to claim 1 or 2, which is characterized by comprising the following steps: the preparation method comprises the following steps:
(1) weighing 40g of urea, sintering at 500 ℃ in a muffle furnace at a temperature rise speed of 2 ℃/min for 2h to obtain light yellow C3N4Powder;
(2) 0.1g of FeCl was weighed out separately2•4H2O, 0.1g of CoCl2•6H2O with 0.1g of C3N4Placing the graphene oxide powder into a beaker, and then weighing 0.02g of graphene oxide to place the graphene oxide powder into the beaker;
(3) adding 20ml of deionized water into the beaker in which the raw materials are placed in the step (2), and stirring the solution in a water bath at the temperature of 80 ℃ for 2 hours to obtain a hydrothermal reactant;
(4) freeze-drying the reactant, putting the reactant into a tubular furnace filled with Ar, heating the reactant to 600 ℃ at the speed of 5 ℃/min, preserving the heat for 5 hours, and cooling the reactant to room temperature;
(5) after the sample is pickled and dried, namelyThe final sample Fe-Co-g-C can be obtained3N4@ rGO catalyst, Fe-Co-g-C3N4The SEM image of the @ rGO catalyst is shown in FIG. 1, and it can be seen from the image that the surface of the obtained material is self-assembled by a horn-shaped nano structure.
4. The preparation method of the Co and Fe element modified graphite-phase carbon nitride and graphene oxide fuel cell anode catalyst according to claim 1 or 2, which is characterized by comprising the following steps: the preparation method comprises the following steps:
(1) firstly weighing 60g of urea, and sintering at 500 ℃ in a muffle furnace at the heating rate of 5 ℃/min for 5h to obtain light yellow C3N4Powder;
(2) 0.3g of FeCl was weighed out separately2•4H2O, 0.3g of CoCl2•6H2O with 0.5g of C3N4Placing the graphene oxide powder into a beaker, and then weighing 0.1g of graphene oxide to place the graphene oxide powder into the beaker;
(3) adding 20ml of deionized water into the raw materials, and stirring the solution in a water bath at the temperature of 80 ℃ for 2 hours;
(4) freeze-drying the reactant, putting the reactant into a tubular furnace filled with Ar, heating the reactant to 600 ℃ at the speed of 5 ℃/min, preserving the heat for 5 hours, and cooling the reactant to room temperature;
(5) pickling and drying the sample to obtain the final sample Fe-Co-g-C3N4@ rGO catalyst.
5. The preparation method of the Co and Fe element modified graphite-phase carbon nitride and graphene oxide fuel cell anode catalyst according to claim 1 or 2, which is characterized by comprising the following steps: the preparation method comprises the following steps:
(1) firstly weighing 50g of urea, and sintering at 500 ℃ in a muffle furnace at the heating rate of 3 ℃/min for 3h to obtain light yellow C3N4Powder;
(2) 0.2g of FeCl was weighed out separately2•4H2O, 0.2g of CoCl2•6H2O with 0.3g of C3N4Placing in a beaker, and weighing 0.06g of graphene oxidePlacing in the beaker;
(3) adding 20ml of deionized water into the raw materials, and stirring the solution in a water bath at the temperature of 80 ℃ for 2 hours;
(4) freeze-drying the reactant, putting the reactant into a tubular furnace filled with Ar, heating the reactant to 600 ℃ at the speed of 5 ℃/min, preserving the heat for 5 hours, and cooling the reactant to room temperature;
(5) pickling and drying the sample to obtain the final sample Fe-Co-g-C3N4@ rGO catalyst.
6. The preparation method of the Co and Fe element modified graphite-phase carbon nitride and graphene oxide fuel cell anode catalyst according to claim 1 or 2, which is characterized by comprising the following steps: the preparation method comprises the following steps:
(1) firstly weighing 50g of urea, and sintering at 500 ℃ in a muffle furnace at the heating rate of 2 ℃/min for 2h to obtain light yellow C3N4Powder;
(2) 0.3g of FeCl was weighed out separately2•4H2O, 0.3g of CoCl2•6H2O with 0.45g of C3N4Placing the graphene oxide powder into a beaker, and then weighing 0.05g of graphene oxide to place the graphene oxide powder into the beaker;
(3) adding 20ml of deionized water into the raw materials, and stirring the solution in a water bath at the temperature of 80 ℃ for 2 hours;
(4) freeze-drying the reactant, putting the reactant into a tubular furnace filled with Ar, heating the reactant to 600 ℃ at the speed of 5 ℃/min, preserving the heat for 5 hours, and cooling the reactant to room temperature;
(5) pickling and drying the sample to obtain the final sample Fe-Co-g-C3N4@ rGO catalyst.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112973755A (en) * | 2021-03-04 | 2021-06-18 | 中国科学技术大学 | Graphite-phase carbon nitride-based two-dimensional composite photocatalytic material and preparation method and application thereof |
| CN113764684A (en) * | 2021-08-17 | 2021-12-07 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of fuel cell cathode catalyst material |
| CN114275777A (en) * | 2021-12-28 | 2022-04-05 | 盐城工学院 | Preparation method of high-graphitization-degree carbon-based material for lithium battery negative electrode |
| CN114314684A (en) * | 2021-12-30 | 2022-04-12 | 河北工业大学 | FeCo2S4Preparation method and application of/N-S-rGO material |
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