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Polyaniline-gold composite material, and preparation and application thereof

A composite material, polyaniline technology, applied in catalyst activation/preparation, organic compound/hydride/coordination complex catalysts, electrodes, etc. The effect of good synergy, suitable gold loading, and simple preparation method

Active Publication Date: 2020-08-07
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Polyaniline has conductivity, stability, diverse structures, special doping mechanism, photoelectric properties, easy processing and cheap raw materials, which have become the characteristics of conductive polymer research. The polymer has various preparation methods, but due to the preparation process Different from different conditions, the obtained polyaniline materials have great differences in morphology and performance, which will affect its application effect.

Method used

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  • Polyaniline-gold composite material, and preparation and application thereof
  • Polyaniline-gold composite material, and preparation and application thereof
  • Polyaniline-gold composite material, and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of polyaniline-gold composite material, comprising the steps of:

[0033] (1) Ultrasonic-clean the hydrophilic carbon paper with a thickness of 0.2mm in deionized water, ethanol, and deionized water respectively for 10 minutes each; install the cleaned hydrophilic carbon paper on the platinum electrode holder as the working electrode 1. The geometric size of the working electrode is 1cm×1cm; the platinum sheet is used as the counter electrode, and the geometric size is 1cm×1cm; the saturated calomel electrode (SCE) is used as the reference electrode and placed in the electrolytic cell;

[0034] (2) prepare the mixed solution of aniline and sulfuric acid, wherein the concentration of aniline is 0.05mol / L, and the concentration of sulfuric acid is 0.05mol / L; Cyclic voltammetry (CV) was used to redox the polyaniline template. The starting potential of cyclic voltammetry was -0.1V, the ending potential was 0.9V, the number of scanning cycles was 15, and...

Embodiment 2

[0042] A preparation method of polyaniline-gold composite material, comprising the steps of:

[0043] (1) Ultrasonic-clean the hydrophilic carbon paper with a thickness of 0.2mm in deionized water, ethanol, and deionized water respectively for 10 minutes each; install the cleaned hydrophilic carbon paper on the platinum electrode holder as the working electrode ; Place the platinum mesh as the counter electrode and the saturated calomel electrode (SCE) as the reference electrode in the electrolytic cell;

[0044] (2) prepare the mixed solution of aniline and sulfuric acid, wherein the concentration of aniline is 0.05mol / L, and the concentration of sulfuric acid is 0.1mol / L; Cyclic voltammetry (CV) redox preparation of polyaniline template. The starting potential of cyclic voltammetry is -0.2V, the ending potential is 0.9V, the number of scanning cycles is 30, and the scanning speed is 50mV / s.

[0045] (3) Prepare a chloroauric acid solution with a concentration of 1 mmol / L; ...

Embodiment 3

[0050] A preparation method of polyaniline-gold composite material, comprising the steps of:

[0051] (1) Ultrasonic-clean the hydrophilic carbon paper with a thickness of 0.2mm in deionized water, ethanol, and deionized water respectively for 10 minutes each; install the cleaned hydrophilic carbon paper on the platinum electrode holder as the working electrode ;Put the platinum wire as the counter electrode and the saturated calomel electrode (SCE) as the reference electrode, and place it in the electrolytic cell;

[0052] (2) prepare the mixed solution of aniline and sulfuric acid, wherein the concentration of aniline is 0.08mol / L, and the concentration of sulfuric acid is 0.05mol / L; Cyclic voltammetry (CV) redox preparation of polyaniline template. The starting potential of cyclic voltammetry is -0.2V, the ending potential is 1.0V, the number of scanning cycles is 20, and the scanning speed is 50mV / s.

[0053] (3) Prepare a chloroauric acid solution with a concentration o...

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Abstract

The invention discloses a preparation method of a polyaniline-gold composite material. The method comprises the following steps: (1) preparing a short-chain polyaniline template; and (2) reacting theshort-chain polyaniline template with gold ions to obtain the polyaniline-gold composite material. The size-controllable PANI / Au nanometer composite material is prepared through an in-situ reduction method; and the composite material can be applied to the field of electroreduction of CO2, and the catalytic effect of the composite material is excellent due to the fact that a gold loading amount isproper, particles are uniform, no large agglomeration exists and a good synergistic effect exists between the composite material and polyaniline.

Description

technical field [0001] The invention relates to the field of composite material catalysis, in particular to a preparation method of a polyaniline-gold nanoparticle composite material and its application in electrocatalytic reduction of carbon dioxide. Background technique [0002] Carbon dioxide electrocatalysis—Using carbon dioxide as a raw material, high value-added chemicals such as methane, ethylene, ethanol, propane, etc. can be obtained through electrocatalytic reduction of carbon dioxide. These substances can be directly used as fuel for vehicles, airplanes, etc. It is easier to obtain and reduce CO to a certain extent 2 Release, alleviate the greenhouse effect. [0003] In the electrochemical reduction of CO 2 In the research, metal catalysts are mainly used. Compared with the high price and low reserves of metals, non-metals, especially carbon materials, have wider sources, much lower prices, and are environmentally friendly. Therefore, many researchers are tryin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06B01J37/34C25B11/06C25B3/04C25B3/25
CPCB01J31/06B01J37/348C25B11/04C25B3/25B01J35/33
Inventor 柳鹏张亚楠程发良张敏阮栋梁王寿山谢世磊谢东谭桂平
Owner DONGGUAN UNIV OF TECH
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