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Catalyst for carbon dioxide reduction through electrocatalysis and preparation method thereof

A carbon dioxide and catalyst technology, which is applied in the field of electrocatalytic carbon dioxide reduction catalysts and its preparation, can solve the problems of low selectivity of target products, increased catalyst cost, poor catalyst stability, etc., to improve Faradaic efficiency, increase contact specific surface area, The effect of energy efficiency

Inactive Publication Date: 2019-09-27
INT ACAD OF OPTOELECTRONICS AT ZHAOQING SOUTH CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Electrocatalyst is the key to realize the electrocatalytic reduction of carbon dioxide. At present, the choice of electrode materials is mostly concentrated in noble metals or transition metals with high prices, which greatly increases the cost of catalysts. At the same time, the electrocatalytic process also has poor catalyst stability and the target product Therefore, it is of great research significance to prepare efficient and cheap carbon dioxide electrochemical reduction catalysts.

Method used

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  • Catalyst for carbon dioxide reduction through electrocatalysis and preparation method thereof

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Effect test

Embodiment 1

[0018] The preparation method of the catalyst for the electrocatalytic reduction of carbon dioxide is characterized in that it comprises the following steps:

[0019] (1) Preparation of MXene: Immerse 1 g of ground MAX phase ceramic powder into 20 mL of HF solution with a mass fraction of 40%, raise the temperature to 80°C, and centrifuge to obtain the product after magnetic stirring for 18 hours, wash with deionized water until neutral , placed in an oven and dried at 70°C for 18 hours to obtain MXene, in which the MAX phase ceramic is Ti 3 AlC 2 、Ti 2 AlC, Cr 2 At least one of AlC; the resulting MXene is Ti 3 C 2 T x (T x -OH, -F and other functional groups), Ti 2 CT x (T x -OH, -F and other functional groups), Cr 2 CT x (T x is at least one of functional groups such as -OH, -F);

[0020] (2) Preparation of indium zinc sulfide-MXene composite material: Take 0.5g of indium nitrate, 1g of thiourea, 1g of zinc nitrate and 0.1g of MXene prepared in step (1) and diss...

Embodiment 2

[0022] The preparation method of the catalyst for the electrocatalytic reduction of carbon dioxide is characterized in that it comprises the following steps:

[0023] (1) Preparation of MXene: Immerse 1 g of ground MAX phase ceramic powder into 20 mL of HF solution with a mass fraction of 30%, raise the temperature to 50°C, and centrifuge to obtain the product after magnetic stirring for 12 hours, wash with deionized water until neutral , placed in an oven and dried at 60°C for 12 hours to obtain MXene, in which the MAX phase ceramic is Ti 3 AlC 2 、Ti 2 AlC, Cr 2 At least one of AlC; the resulting MXene is Ti 3 C 2 T x (T x -OH, -F and other functional groups), Ti 2 CT x (T x -OH, -F and other functional groups), Cr 2 CT x (T x is at least one of functional groups such as -OH, -F);

[0024] (2) Preparation of indium zinc sulfide-MXene composite material: Dissolve 1g of indium nitrate, 2g of thiourea, 2g of zinc nitrate and 0.5g of MXene prepared in step (1) in 100...

Embodiment 3

[0026] The preparation method of the catalyst for the electrocatalytic reduction of carbon dioxide is characterized in that it comprises the following steps:

[0027] (1) Preparation of MXene: Immerse 1 g of ground MAX phase ceramic powder into 20 mL of HF solution with a mass fraction of 50%, raise the temperature to 90°C, and centrifuge to obtain the product after magnetic stirring for 24 hours, wash with deionized water until neutral , placed in an oven and dried at 80°C for 24 hours to obtain MXene, in which the MAX phase ceramic is Ti 3 AlC 2 、Ti 2 AlC, Cr 2 At least one of AlC; the resulting MXene is Ti 3 C 2 T x (T x -OH, -F and other functional groups), Ti 2 CT x (T x -OH, -F and other functional groups), Cr 2 CT x (T x is at least one of functional groups such as -OH, -F);

[0028] (2) Preparation of indium zinc sulfide-MXene composite material: Take 0.8g of indium nitrate, 1.5g of thiourea, 1.5g of zinc nitrate and 0.3g of MXene prepared in step (1) and ...

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Abstract

The invention belongs to the technical field of carbon dioxide reduction through electrocatalysis, and particularly relates to a catalyst for carbon dioxide reduction through electrocatalysis and a preparation method thereof. The catalyst is an indium zinc sulfide-MXene composite material. The catalyst has high electrocatalytic activity and selectivity on the carbon dioxide reduction, and significantly improves the energy efficiency for carbon dioxide utilization.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic reduction of carbon dioxide, and in particular relates to a catalyst for electrocatalytic reduction of carbon dioxide and a preparation method thereof. Background technique [0002] With the rapid development of industry and the massive consumption of fossil fuels, CO in the atmosphere 2 The content of carbon dioxide has continued to increase in the past few decades, from 280ppm before the industrial revolution to the current 400ppm. From an economic point of view, carbon dioxide has become an important C1 raw material in organic synthesis because of its high functionality, abundance, renewable carbon source, and environmental friendliness. Therefore, how to resource carbon dioxide and convert it into liquid fuel or other useful chemicals, so as to achieve energy saving and emission reduction, CO 2 Recycling and CO in a macro sense 2 "Zero emission" has become a focus of everyone's att...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22B01J35/10C25B3/04C25B11/06C25B3/25
CPCB01J27/22C25B11/04C25B3/25B01J35/396B01J35/33B01J35/61
Inventor 钊妍王加义
Owner INT ACAD OF OPTOELECTRONICS AT ZHAOQING SOUTH CHINA NORMAL UNIV
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