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Single-stranded DNA/reduced graphene/cottony platinum nanoparticle as well as synthesis and application thereof

A graphene and platinum nanotechnology, applied in electrical components, battery electrodes, circuits, etc., to achieve superior catalytic active surface area, high catalytic activity and anti-poisoning ability, and improve the catalytic and anti-poisoning properties of materials

Inactive Publication Date: 2015-08-26
SHANGHAI NORMAL UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention uses high-performance graphene, environmentally friendly material DNA, and the reduced graphene modified by the synthesized single-stranded DNA as the base cotton-like platinum nanoparticles for methanol fuel cell cathode materials, successfully solving the problem of methanol fuel cell cathode materials Poisoning problem, improve material catalysis and anti-poisoning

Method used

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  • Single-stranded DNA/reduced graphene/cottony platinum nanoparticle as well as synthesis and application thereof
  • Single-stranded DNA/reduced graphene/cottony platinum nanoparticle as well as synthesis and application thereof
  • Single-stranded DNA/reduced graphene/cottony platinum nanoparticle as well as synthesis and application thereof

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Embodiment 1

[0026] This embodiment is carried out on the Electrochemical CHI 660D type electrochemical workstation (Shanghai Chenhua Instrument Co., Ltd.); the field emission scanning electron microscope spectrum adopts Hitachi S-4800 (Tokyo, Japan) field emission scanning electron microscope, SK2200H ultrasonic instrument ( Shanghai Kedao Ultrasonic Instrument Co., Ltd.).

[0027] The reduction graphene modified by single-stranded DNA is the preparation method of the cotton-like platinum nanoparticles of the substrate as follows:

[0028] (1) Use the optimized Hummer method to synthesize graphene oxide.

[0029] (2) Measure 4 to 7 mg of protidine DNA sodium salt and dissolve it in 10.0 ml of secondary deionized water, heat it at a high temperature of 100°C for two hours, add 5 ml of 1 mmol per ml of graphene oxide to the DNA solution, and stir Uniformly, add 2 milliliters of trisodium citrate, reduce for two hours, cool and add 0.4675 grams of sodium chloride (NaCl) solid, precipitate a...

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Abstract

The invention relates to a single-stranded DNA / reduced graphene / cottony platinum nanoparticle as well as synthesis and application thereof. The synthesis method comprises the following steps: performing pyrolysis on milt DNA sodium salt to form single-stranded DNA, adding oxidized graphene to a single-stranded DNA solution under a pyrolysis temperature, stirring uniformly, and then adding trisodium citrate for reduction to obtain a reduced graphene solution modified by the single-stranded DNA; treating a glassy carbon electrode to be clean, dropwise adding the reduced graphene solution modified by the single-stranded DNA, and drying for standby use; using the obtained glassy carbon electrode as a working electrode, using a Ag / AgCl electrode as a reference electrode, using a platinum wire electrode as a counter electrode, performing electrochemical deposition in a chloroplatinic acid mixed solution, and synthetizing the single-stranded DNA / reduced graphene / cottony platinum nanoparticle. Compared with the prior art, the cottony platinum nanoparticle by using reduced graphene modified by the single-stranded DNA as a base synthetized by the synthesis method is used for a methanol fuel cell anode material, the poisoning problem of the methanol fuel cell anode material is successfully solved, and the catalytic property and poison resistance of the material are improved.

Description

technical field [0001] The invention relates to a fuel cell cathode material, in particular to a single-stranded DNA / reduced graphene / cotton-like platinum nanoparticle and its synthesis and application. Background technique [0002] At present, human beings are facing various severe environmental problems. Among them, people's rapid consumption of energy in daily life not only greatly reduces the fossil energy reserves, but also brings irreparable damage to nature. Therefore, it is urgent for human beings to find green and efficient energy sources to replace fossil fuels. As alternatives to fossil fuel cells, proton exchange membrane fuel cells (PEMFCs), direct methanol fuel cells (DMFCs), and direct formic acid fuel cells (DFAFCs) have been widely used in practical applications. Compared with traditional fossil fuel cells, alternative fuel cells have the characteristics of high energy density and low environmental pollution. Among them, methanol is considered to be one o...

Claims

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Application Information

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IPC IPC(8): H01M4/90C25D3/50
CPCC25D3/50H01M4/90Y02E60/50
Inventor 杨海峰李梦珠
Owner SHANGHAI NORMAL UNIVERSITY
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