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Supported gold-platinum alloy electrode for electrocatalytic reduction of CO2 and preparation method thereof

A gold-platinum alloy, supported technology, applied in the direction of electrodes, electrolytic processes, electrolytic components, etc., can solve the problems of low selection of catalytic products, low yield, poor catalyst stability, etc., to achieve improved binding energy, simple process, enhanced The effect of stability

Active Publication Date: 2021-03-05
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although Cu-based catalysts can catalyze CO 2 Converts to alkanes, but has low catalytic product selectivity, low yield, and poor catalyst stability

Method used

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  • Supported gold-platinum alloy electrode for electrocatalytic reduction of CO2 and preparation method thereof
  • Supported gold-platinum alloy electrode for electrocatalytic reduction of CO2 and preparation method thereof
  • Supported gold-platinum alloy electrode for electrocatalytic reduction of CO2 and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Electrocatalytic reduction of CO 2 The preparation method of the supported type gold-platinum alloy electrode comprises the following steps:

[0031] (1) Take 5g of Vulcan XC-72R carbon black, add it to 200mL of acetone solution, raise the temperature to 60°C, condense and reflux, keep the temperature for 4h, dry and wash, remove the acetone solution on the surface; add 200mL (1:5) of hydrochloric acid solution Heated to 120°C, condensed and refluxed, kept at a constant temperature for 10 hours, dried and washed to remove the surface hydrochloric acid solution; added to 200mL5mol / L nitric acid solution, heated to 120°C, condensed and refluxed at a constant temperature for 10 hours, dried and washed to remove the surface nitric acid solution . Dry for 10 hours to obtain a hydrophilic Vulcan XC-72R carbon black carrier.

[0032] (2) Take 30 mg of the carbon black carrier treated in step (1), add an appropriate amount of deionized water, and perform ultrasonic treatment ...

Embodiment 2

[0036] Electrocatalytic reduction of CO 2 The preparation method of the supported type gold-platinum alloy electrode comprises the following steps:

[0037] (1) Take 10g of Vulcan XC-72R carbon black, add it to 200mL of acetone solution, raise the temperature to 60°C, condense and reflux, keep the temperature for 4h, dry and wash, remove the acetone solution on the surface; add 200mL (1:5) of hydrochloric acid solution Heated to 120°C, condensed and refluxed, kept at a constant temperature for 10 hours, dried and washed to remove the surface hydrochloric acid solution; added to 200mL5mol / L nitric acid solution, heated to 120°C, condensed and refluxed at a constant temperature for 10 hours, dried and washed to remove the surface nitric acid solution . Dry for 10 hours to obtain a hydrophilic Vulcan XC-72R carbon black carrier.

[0038] (2) Take 30 mg of the Vulcan XC-72R carbon black carrier treated in step (1), add an appropriate amount of deionized water, and perform ultras...

Embodiment 3

[0041] Electrocatalytic reduction of CO 2 The preparation method of the loaded type gold-platinum alloy electrode comprises the following steps:

[0042] (1) Take 10g of carbon nanotubes, add them to 200mL of acetone solution, raise the temperature to 60°C, condense and reflux, keep the temperature constant for 4h, dry and wash, remove the acetone solution on the surface; add it to 200mL (1:5) of hydrochloric acid solution, Heat to 120°C, condense and reflux, keep the temperature for 10 hours, dry and wash to remove the surface hydrochloric acid solution; add to 200mL5mol / L nitric acid solution, heat to 120°C, condense and reflux, keep the temperature for 10 hours, dry and wash to remove the surface nitric acid solution. Dry for 10 hours to obtain a hydrophilic carbon nanotube carrier.

[0043] (2) Take 30 mg of the carbon nanotube carrier treated in step (1), add an appropriate amount of deionized water, and perform ultrasonic treatment for 40 min for later use. 20mL oleyla...

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Abstract

The invention provides a supported gold-platinum alloy electrode for electrocatalytic reduction of CO2 and a preparation method thereof. The preparation method comprises the steps: enabling Vulcan XC-72R carbon black or carbon nanotubes to be subjected to hydrophilic treatment, using oleylamine as a stabilizer, chloroauric acid and chloroplatinic acid as precursors, and a borane tert-butylamine complex as a reducing agent, and adding the treated carbon black or carbon nanotubes; and carrying out mechanical stirring, centrifugal washing and vacuum drying to obtain supported gold-platinum alloy,preparing an ink solution, and coating and drying the prepared alloy catalyst material to obtain the supported gold-platinum alloy electrode. The prepared supported gold-platinum alloy electrode hashigh catalytic activity, high stability and good performance of electrochemical catalytic reduction of CO2. The preparation process is simple, has low requirements on equipment, and has a good industrial prospect.

Description

technical field [0001] The invention relates to the field of electrocatalytic reduction, and mainly relates to an electrocatalytic reduction of CO 2 A supported gold-platinum alloy electrode and a preparation method thereof. Background technique [0002] As we all know, CO 2 It is the most important cause of global warming. The greenhouse effect has brought about a series of problems, such as rising sea levels, melting glaciers, and reducing species of plants and animals. Therefore, more and more researchers around the world are increasing their research on CO 2 Scientific research on reprocessing. [0003] How to convert carbon dioxide into products with higher added value is the direction of current research. Carbon dioxide is converted through chemical conversion, including thermal catalysis, photocatalysis, and electrocatalysis. Electrocatalytic reduction of CO 2 Compared with other catalytic methods, it has the following advantages: (1) The reaction conditions are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/065C25B11/089C25B3/26C25B3/03
Inventor 朱英明
Owner SICHUAN UNIV
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