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Ni/Fe bimetal-containing MOFs nitrogen-containing graphitized carbon material

A graphitized carbon and bimetal technology, which is applied in the directions of heat exchange materials, electrode shapes/types, chemical instruments and methods, etc., can solve the problems of expensive precious metals and restrict the promotion and application of catalysts, and achieve high specific surface area and low price. , the effect of stable performance

Active Publication Date: 2017-10-20
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the research based on precious metals such as Ru, Ir, Pt and their alloys is currently an electrolytic water catalyst with excellent electrolytic water performance, but the scarcity and high price of precious metals seriously restrict the popularization and application of such catalysts.

Method used

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  • Ni/Fe bimetal-containing MOFs nitrogen-containing graphitized carbon material
  • Ni/Fe bimetal-containing MOFs nitrogen-containing graphitized carbon material
  • Ni/Fe bimetal-containing MOFs nitrogen-containing graphitized carbon material

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Effect test

Embodiment 1

[0027] Step 1: Weigh 452.9 mg of 2-aminoterephthalic acid, stir and dissolve in 12.5 mL of DMF at room temperature to form a solution. Weigh 337.9 mg FeCl 3 ·6H 2 O and 363.9 mg Ni(NO 3 ) 2 ·6H 2 O was added to the above DMF solution, stirred and dissolved at room temperature. The obtained mixed solution was added into a polytetrafluoroethylene liner, and reacted by solvothermal method for 12 h at 150 °C. After cooling down to room temperature, the mixture was centrifuged at 8000rpm, washed with DMF and ethanol for 2-3 times, vacuum-dried at low temperature, and activated in vacuum at 200°C to obtain the NiFe-BMOFs precursor (that is, the Ni / Fe bimetallic MOFs precursor ).

[0028] Step 2: Synthesis of NiFe@NC: Weigh 200 mg of NiFe-BMOFs from step 1 into a tube furnace, 2 In an argon-hydrogen atmosphere with a certain content, the rate was increased to 900 °C at a rate of 5 °C / min, and calcined for 2 h to obtain 43.8 mg NiFe@NC (namely, Ni / Fe bimetallic MOFs nitrogen-co...

Embodiment 2

[0030] Step 1: Weigh 452.9 mg of 2-aminoterephthalic acid, stir and dissolve in 12.5 mL of DMF at room temperature to form a solution. Weigh 135.2 mg FeCl 3 ·6H 2 O and 581.6 mg Ni(NO 3 ) 2 ·6H 2 O was added to the above DMF solution, stirred and dissolved at room temperature. The obtained mixed solution was added into a polytetrafluoroethylene liner, and reacted by solvothermal method for 12 h at 150 °C. After cooling down to room temperature, the mixture was centrifuged at 8000rpm, washed with DMF and ethanol for 2-3 times, vacuum-dried at low temperature, and activated in vacuum at 200°C to obtain the NiFe-BMOFs precursor (that is, the Ni / Fe bimetallic MOFs precursor ).

[0031] Step 2: Synthesis of NiFe@NC: Weigh 200 mg of NiFe-BMOFs from step 1 into a tube furnace, 2 In an argon-hydrogen atmosphere with a certain content, the rate was increased to 900 °C at a rate of 5 °C / min, and calcined for 2 h to obtain 43.8 mg NiFe@NC (namely, Ni / Fe bimetallic MOFs nitrogen-co...

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Abstract

The invention provides a Ni / Fe bimetal-containing MOFs nitrogen-containing graphitized carbon material. A preparation method of the Ni / Fe bimetal-containing MOFs nitrogen-containing graphitized carbon material comprises that S1, 2-aminoterephthalic acid, an iron salt and a nickel salt are dissolved in N, N-dimethylformamide and undergo a solvothermal reaction, then the mixed solution is centrifuged, and the centrifuged product is washed, dried and activated to form a Ni / Fe bimetal-containing MOFs precursor, and S2, the Ni / Fe bimetal-containing MOFs is calcined in inert gas to form the Ni / Fe bimetal-containing MOFs nitrogen-containing graphitized carbon material. The invention provides the porous carbon material having a high specific surface area, rich metal nitrogen structures and a high graphitization degree. The Ni / Fe bimetal-containing MOFs nitrogen-containing graphitized carbon material has good material activity, stable performances and a low price and utilizes double non-noble metals. Compared with the commercial ruthenium oxide and iridium oxide, the product has excellent water electrolysis oxygen evolution activity and has a great application prospect in energy storage materials.

Description

technical field [0001] The invention relates to the technical field of preparation of energy storage materials, in particular to a Ni / Fe bimetallic MOFs nitrogen-containing graphitized carbon material. Background technique [0002] The massive consumption of fossil energy has brought serious energy shortage crisis and environmental pollution problems. Therefore, finding renewable and high-yield clean energy that can sustainably replace fossil energy is one of the major problems that scientists around the world need to solve urgently. Hydrogen energy with zero carbon emissions is considered to be one of the cleanest and most efficient energy sources at present. How to generate hydrogen sustainably and effectively is the first problem to be overcome when humans enter the era of hydrogen energy in the future. [0003] Electrolyzed water technology is based on the principle of electrochemical or photoelectric water splitting. Using renewable electric energy or solar energy to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/14C25B1/04C25B11/12C25B11/03
CPCC09K5/14C25B1/04C25B11/031C25B11/043Y02E60/36
Inventor 李光琴李银乐贾保明朱克龙
Owner SUN YAT SEN UNIV
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