Tin oxide-bismuth oxychloride composite particle as well as preparation method and application thereof

A technology of bismuth oxychloride and composite particles, which is applied to electrodes, electrolysis processes, electrolysis components, etc., can solve the problems of poor dispersion performance of bismuth element, low material utilization rate, poor catalytic performance, etc., to avoid rapid hydrolysis and achieve good conductivity. , the effect of uniform particle dispersion

Active Publication Date: 2021-06-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tin oxide (SnO 2 ) can catalyze CO 2 Electrochemical reduction produces formic acid, but the catalytic performance of the existing tin oxide catalyst is relatively poor, and because tin oxide is a transition metal oxide, the conductivity is poor
Bismuth (Bi) can also catalyze CO 2 Electrochemical reduction produces formic acid, but the dispersion performance of bismuth element is poor, and the material utilization rate is low

Method used

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  • Tin oxide-bismuth oxychloride composite particle as well as preparation method and application thereof
  • Tin oxide-bismuth oxychloride composite particle as well as preparation method and application thereof
  • Tin oxide-bismuth oxychloride composite particle as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of tin oxide-bismuth oxychloride composite particle, its preparation method comprises the following steps:

[0038] 1) 0.194g (0.0004mol) of Bi(NO 3 ) 3 ·5H 2 O was added to 17mL of ethylene glycol, and then 0.36g (0.0016mol) of SnCl 2 2H 2 0, ultrasonic 15min, then add the ethanol of the conductive carbon black of 200mg and 34mL, ultrasonic 30min, obtain reaction mixture;

[0039] 2) Add the reaction mixture to a polytetrafluoroethylene-lined reactor, react at 160°C for 2 hours, then cool to room temperature, filter with suction, wash the filtered solid with deionized water and ethanol, dry in vacuum, and grind to obtain tin oxide - Bismuth oxychloride composite particles (referred to as SnO 2 -BiOCl / C).

Embodiment 2

[0041] A kind of tin oxide-bismuth oxychloride composite particle, its preparation method comprises the following steps:

[0042] 1) 0.647g (0.0013mol) of Bi(NO 3 ) 3 ·5H 2 Add O to 17mL of ethylene glycol, and then add 0.151g (0.00067mol) of SnCl 2 2H 2 0, ultrasonic 15min, then add the ethanol of the conductive carbon black of 200mg and 34mL, ultrasonic 30min, obtain reaction mixture;

[0043] 2) Add the reaction mixture to a polytetrafluoroethylene-lined reactor, react at 160°C for 2 hours, then cool to room temperature, filter with suction, wash the filtered solid with deionized water and ethanol, dry in vacuum, and grind to obtain tin oxide - bismuth oxychloride composite particles.

Embodiment 3

[0045] A kind of tin oxide-bismuth oxychloride composite particle, its preparation method comprises the following steps:

[0046] 1) 0.776g (0.0016mol) of Bi(NO 3 ) 3 ·5H 2 Add O to 17mL of ethylene glycol, and then add 0.09g (0.0004mol) of SnCl 2 2H 2 0, ultrasonic 15min, then add the ethanol of the conductive carbon black of 200mg and 34mL, ultrasonic 30min, obtain reaction mixture;

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Abstract

The invention discloses tin oxide-bismuth oxychloride composite particles as well as a preparation method and application thereof. The tin oxide-bismuth oxychloride composite particle disclosed by the invention comprises conductive carbon black particles and tin oxide-bismuth oxychloride composite nanoparticles loaded on the conductive carbon black particles. The preparation method of the tin oxide-bismuth oxychloride composite particles comprises the following steps: 1) dispersing bismuth salt and stannous chloride in an alcohol solvent, then adding conductive carbon black and ethanol, and mixing to obtain a reaction mixture; and 2) adding the reaction mixture into a reaction kettle, carrying out solvothermal reaction, separating out a solid product, washing, drying and grinding. The tin oxide-bismuth oxychloride composite particle disclosed by the invention is good in conductivity, stable in structure, small in particle size and multiple in catalytic active sites, and has high catalytic activity and high selectivity when being used for a reaction for producing formic acid by reducing CO2 through electro-catalysis.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a tin oxide-bismuth oxychloride composite particle and a preparation method and application thereof. Background technique [0002] The greenhouse effect, also known as the "greenhouse effect", is a common name for the atmospheric insulation effect. Since the industrial revolution, the carbon dioxide (CO2) emitted by humans into the atmosphere 2 ) and other heat-absorbing greenhouse gases are increasing year by year, and the greenhouse effect of the atmosphere is also enhanced. A series of problems caused by it have attracted the attention of countries all over the world. [0003] CO is converted by electrochemical process 2 Catalytic conversion into useful fuels or chemicals that not only mitigate CO 2 The environmental problems caused by it can also realize the carbon cycle. Electrocatalytic CO 2 One of the technical key points of the conversion is to develop a suitabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B3/07C25B3/26C25B11/091
Inventor 王红娟王夏满余皓曹永海彭峰
Owner SOUTH CHINA UNIV OF TECH
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