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Polyacid-graphene composite material and preparation method and application thereof

A composite material and graphene technology, applied in the field of clean energy, can solve problems such as ultraviolet light pollution, and achieve the effects of high electrocatalytic activity, low overpotential, and good stability

Inactive Publication Date: 2017-05-24
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the 12-phosphotungstic acid in the prepared composite material is uniformly loaded on the surface of graphene in the form of a single molecule, it is easy to cause ultraviolet light pollution if it is widely promoted.

Method used

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  • Polyacid-graphene composite material and preparation method and application thereof
  • Polyacid-graphene composite material and preparation method and application thereof
  • Polyacid-graphene composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Polyacid [H 7 P 8 W 48 o 184 ] 33 – (P 8 W 48 ) (15mL, 1.6mM) and GO (15mL, 0.6mg mL -1 ) were simultaneously dispersed and dissolved in sulfuric acid solution (pH=1.0), and then electrolytic reduction was carried out at the potential of -0.65V vs. SCE to obtain polyacid (P 8 W 48 (16e - )), followed by P 8 W 48 (16e - ) can reduce GO to prepare graphene (rGO) materials. At the same time, P 8 W 48 (16e - ) back to P 8 W 48 , and adsorbed on the surface of rGO, that is, polyacid and graphene composite (P 8 W 48 / rGO).

Embodiment 2

[0022] Polyacid [H 7 P 8 W 48 o 184 ] 33 – (P 8 W 48 ) (15mL, 2mM) and GO (15mL, 0.6mg mL -1 ) were simultaneously dispersed and dissolved in sulfuric acid solution (pH=1.0), and then electrolytic reduction was carried out at the potential of -0.65V vs. SCE to obtain polyacid (P 8 W 48 (16e - )), followed by P 8 W 48 (16e - ) can reduce GO to prepare graphene (rGO) materials. At the same time, P 8 W 48 (16e - ) back to P 8 W 48 , and adsorbed on the surface of rGO, that is, polyacid and graphene composite (P 8 W 48 / rGO).

Embodiment 3

[0024] Polyacid [H 7 P 8 W 48 o 184 ] 33 – (P 8 W 48 ) (15mL, 2mM) and GO (15mL, 1.0mg mL -1 ) were simultaneously dispersed and dissolved in sulfuric acid solution (pH=1.0), and then electrolytic reduction was carried out at the potential of -0.65V vs. SCE to obtain polyacid (P 8 W 48 (16e - )), followed by P 8 W 48 (16e - ) can reduce GO to prepare graphene (rGO) materials. At the same time, P 8 W 48 (16e - ) back to P 8 W 48 , and adsorbed on the surface of rGO, that is, polyacid and graphene composite (P 8 W 48 / rGO).

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Abstract

The invention discloses a polyacid-graphene composite material which is used for electro-catalytic hydrogen production by serving as an electrocatalyst, and further relates to a preparation method of the polyacid-graphene composite material. The polyacid-graphene composite material is prepared through a one-step in-situ electrolytic reduction method. The catalyst material is high in activity and has the lower overpotential and the better stability compared with a commercialized Pt / C catalyst.

Description

technical field [0001] The invention belongs to the technical field of clean energy, and relates to a multi-acid and graphene composite material, a preparation method and an application thereof. The composite material is used as an electrocatalyst for electrocatalytic hydrogen production. Background technique [0002] In recent years, with the rapid development of global industry and economy, society's demand for energy has doubled. Extensive use of traditional energy such as oil and coal has brought serious air pollution and greenhouse gas emissions. Facing the increasingly severe energy situation and the deterioration of the ecological environment, changing the existing energy structure and developing sustainable green energy has become a topic of great concern to all countries in the world. Among them, the research related to obtaining clean energy through photocatalysis and electrocatalysis has become a research hotspot. Electrocatalytic materials are the key to determ...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B11/12C25B1/04B01J27/188B01J23/30
CPCB01J23/30B01J27/188C25B1/04C25B11/043C25B11/057C25B11/075Y02E60/36
Inventor 张光晋刘荣基曹宏斌石绍渊
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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