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Catalyst prepared from cucurbit[6]uril, reduced graphene and polypyrrole and application thereof

A technology of six-membered melon ring and polypyrrole, which is applied in the field of electrochemical catalysis to achieve good stability, good dispersion effect and simple synthesis

Pending Publication Date: 2021-02-12
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there is currently no method for combining polypyrrole, reduced graphene, and six-membered cucurbit rings for electrocatalytic oxygen evolution reactions.

Method used

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  • Catalyst prepared from cucurbit[6]uril, reduced graphene and polypyrrole and application thereof
  • Catalyst prepared from cucurbit[6]uril, reduced graphene and polypyrrole and application thereof
  • Catalyst prepared from cucurbit[6]uril, reduced graphene and polypyrrole and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1. A catalyst prepared by a six-membered melon ring, reduced graphene and polypyrrole, the preparation steps are as follows:

[0040] First synthesize the six-membered melon ring, its chemical formula is: (C 6 h 6 N 4 o 2 ) 6 , whose structural formula is:

[0041]

[0042] The steps of the preparation method of described catalyst are:

[0043] (1) Dissolve polypyrrole in a mixed solution of ethanol and water at a ratio of 3:7 to prepare a polypyrrole dispersion with a concentration of 5 mg / mL.

[0044] (2) Dissolve the reduced graphene in dimethyl sulfoxide to prepare a dispersion with a concentration of 5 mg / mL.

[0045] (3) Dissolving six-membered melon rings in NaCl solution with a concentration of 0.2 mol / L to prepare a six-membered melon ring dispersion with a concentration of 5 mg / mL.

[0046] (4) with Al 2 o 3 Polish the glassy carbon electrode with polishing powder, wash, and dry to obtain a clean glassy carbon electrode. First, pipette 5 μ...

Embodiment 2

[0047] Example 2. The catalyst obtained in Example 1 is used as an electrode catalyst in the electrocatalytic oxygen evolution reaction, and the steps are as follows:

[0048] (1) Preparation of electrolyte solution: a mixed solution of 0.1 mol / L potassium hydroxide and 0.04 mol / L tetrabutylammonium iodide was prepared as the electrolyte solution.

[0049] (2) A conventional three-electrode system was adopted, with a platinum wire electrode as the counter electrode, Ag / AgCl as the reference electrode, and a glassy carbon electrode (GCE, Φ=3mm) as the working electrode.

[0050] (3) The working electrode is the electrode obtained in step (4) of Example 1.

[0051] In order to verify the technical effect, a series of electrochemical tests were performed using the electrolyte solution prepared in the above step (1) as a solvent, and the working electrode obtained in the step (3) was tested.

[0052] (1) Electrochemical performance test: firstly perform cyclic voltammetry scanni...

Embodiment 3

[0060] Example 3. A catalyst prepared by a six-membered melon ring, reduced graphene and polypyrrole, the preparation steps are as follows:

[0061] First synthesize the six-membered melon ring, its chemical formula is: (C 6 h 6 N 4 o 2 ) 6 , whose structural formula is:

[0062]

[0063] The steps of the preparation method of described catalyst are:

[0064] (1) Dissolve polypyrrole in a mixed solution of ethanol and water at a ratio of 1:9 to prepare a polypyrrole dispersion with a concentration of 5 mg / mL.

[0065] (2) Dissolve the reduced graphene in dimethyl sulfoxide to prepare a dispersion with a concentration of 5 mg / mL.

[0066] (3) Dissolving six-membered melon rings in NaCl solution with a concentration of 0.15 mol / L to prepare a six-membered melon ring dispersion with a concentration of 5 mg / mL.

[0067] (4) with Al 2 o 3 Polish the glassy carbon electrode with polishing powder, wash, and dry to obtain a clean glassy carbon electrode. First, pipette 3 ...

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Abstract

The invention discloses a catalyst prepared from cucurbit[6]uril, reduced graphene and polypyrrole and an application of the catalyst, and particularly relates to an application of the catalyst in electrocatalytic oxygen evolution reaction. The catalyst has the advantages of being low in overpotential, good in stability, simple to synthesize, convenient to operate, free of special equipment, shortin consumed time, low in cost, free of metal pollution and capable of being produced on a large scale, and efficient and cheap hydrogen production can be achieved when the electrode catalyst is applied to an electrocatalytic oxygen evolution reaction. Meanwhile, the invention also develops a novel organic / inorganic composite nano energy material without participation of metal ions.

Description

technical field [0001] The invention relates to the field of electrochemical catalysis, in particular to a catalyst prepared by a cucurbit ring macrocyclic compound, reduced graphene and polypyrrole and its application. Background technique [0002] Among the clean, renewable and green alternative energy sources, hydrogen energy has attracted much attention. Hydrogen production by electrosplitting water splitting is the most effective way to obtain high-purity hydrogen and realize large-scale hydrogen production for future applications. The oxygen evolution reaction (OER) is a key half-cell reaction for water splitting in electrochemical energy conversion and storage devices such as hydrogen fuel production, water electrolysis, and rechargeable metal-air batteries. Therefore, the electrocatalytic oxygen evolution reaction has become a frontier research hotspot in the fields of clean energy and energy storage. The very important link in the OER reaction is the activity and ...

Claims

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Application Information

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IPC IPC(8): C25B11/053C25B11/085C25B11/075C25B1/04
CPCC25B1/04Y02E60/36
Inventor 丛航代欣李恒金先义
Owner GUIZHOU UNIV
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