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Tin dioxide multi-stage structured nanosphere carbon dioxide electrochemical reduction catalyst, preparation method and application of tin dioxide multi-stage structured nanosphere carbon dioxide electrochemical reduction catalyst

A technology of tin dioxide and carbon dioxide, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the unreported and electrochemical reduction effects of electrochemical reduction It has not received widespread attention and other issues, and achieved the effect of reducing hydrogen evolution reaction and catalyst passivation effect, good application prospects, and reducing hydrogen evolution side reactions

Inactive Publication Date: 2015-04-29
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this catalyst in CO 2 Electrochemical reduction has not been reported
In addition, the gas diffusion electrode (GDL), as an important component of the fuel electrode membrane electrode (MEA), has been widely used in the field of fuel cells, but the gas diffusion electrode has a significant impact on CO 2 The effect of electrochemical reduction has not received much attention

Method used

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  • Tin dioxide multi-stage structured nanosphere carbon dioxide electrochemical reduction catalyst, preparation method and application of tin dioxide multi-stage structured nanosphere carbon dioxide electrochemical reduction catalyst
  • Tin dioxide multi-stage structured nanosphere carbon dioxide electrochemical reduction catalyst, preparation method and application of tin dioxide multi-stage structured nanosphere carbon dioxide electrochemical reduction catalyst
  • Tin dioxide multi-stage structured nanosphere carbon dioxide electrochemical reduction catalyst, preparation method and application of tin dioxide multi-stage structured nanosphere carbon dioxide electrochemical reduction catalyst

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Experimental program
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Embodiment 1

[0026] SnO 2 Preparation of multi-level nanosphere catalyst precursor: Take 12mM glucose (monohydrate) and 3mM tin tetrachloride and mix and dissolve in a mixed solution with a volume ratio of 5:30~30:5 ethanol / deionized water to form a colorless and transparent solution to get SnO 2 Hierarchical nanosphere catalyst precursor.

Embodiment 2

[0028] A carbon dioxide electrochemical reduction catalyst, comprising tin dioxide multi-level structure nanospheres, said tin dioxide multi-level structure nanospheres are synthesized by hydrothermal reaction, and its preparation method is: take 12mM glucose (monohydrate) and 3mM Tin tetrachloride is mixed and dissolved in 0ml deionized water and 35mL ethanol to form a colorless and transparent solution to obtain SnO 2 Hierarchical nanosphere catalyst precursor, and moved into a 100mL reactor. The reaction kettle is a hydrothermal reaction kettle with a polytetrafluoroethylene liner and a stainless steel jacket. The reaction kettle is placed in an oven at 190°C for hydrothermal reaction for 24 hours, centrifuged, and washed with ethanol and deionized water respectively. After vacuum drying at 50°C for 5 hours, continue to burn in a muffle furnace at 600°C for 4 hours to obtain carbon dioxide electrochemically reduced SnO 2 Hierarchical nanosphere (100% Et) catalyst.

Embodiment 3

[0030]A carbon dioxide electrochemical reduction catalyst, comprising tin dioxide multi-level structure nanospheres, said tin dioxide multi-level structure nanospheres are synthesized by hydrothermal reaction, and its preparation method is: take 12mM glucose (monohydrate) and 3mM Tin tetrachloride is mixed and dissolved in 5ml deionized water and 30mL ethanol to form a colorless and transparent solution to obtain SnO 2 Hierarchical nanosphere catalyst precursor, and moved into a 100mL reactor. The reaction kettle is a hydrothermal reaction kettle with a polytetrafluoroethylene liner and a stainless steel jacket. The reaction kettle is placed in an oven at 190°C for a hydrothermal reaction for 24 hours, centrifuged, cleaned with ethanol and deionized water, 50 After vacuum drying at ℃ for 5 hours, continue to burn in a muffle furnace at 600℃ for 4 hours to obtain carbon dioxide electrochemically reduced SnO 2 Hierarchical nanospheres (14%H 2 O-86%Et) catalyst.

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Abstract

The invention discloses a tin dioxide multi-stage structured nanosphere carbon dioxide electrochemical reduction catalyst, a preparation method and application of the tin dioxide multi-stage structured nanosphere carbon dioxide electrochemical reduction catalyst. The tin dioxide multi-stage structured nanosphere carbon dioxide electrochemical reduction catalyst comprises a tin dioxide multi-stage structured nanosphere which is synthesized by hydrothermal reaction, wherein synthesis raw materials comprise a mixed solution of stannic chloride, glucose and ethyl alcohol / deionized water. According to the invention, the electrochemical reduction catalytic activity of carbon dioxide by the catalyst is improved obviously, the utilization of carbon dioxide is improved, especially the formic acid generation efficiency is improved; moreover, the hydrogen evolution reaction is inhibited effectively, and the product selectivity is reinforced.

Description

technical field [0001] The invention belongs to the technical field of carbon dioxide electrochemical reduction catalysts, in particular to a carbon dioxide electrochemical reduction catalyst of tin dioxide multi-level structure nanospheres, a preparation method and an application thereof. Background technique [0002] With the rapid development of industry, due to the massive consumption of coal, oil, natural gas and other fuels, on the one hand, there is a worldwide shortage of resources and energy; on the other hand, due to the increase in industrial production and population density, the atmospheric CO 2 The "greenhouse effect" has caused serious environmental pollution problems. In order to solve the above problems, countries around the world, especially developed countries, are investing huge sums of money, concentrating manpower, and using various methods to reduce CO 2 Utilized as "potential carbon resources", many organic chemical products (CH 3 OH, HCOOH, etc.), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/14B01J35/08C25B11/06C25B3/04C25B3/25
Inventor 乔锦丽付奕舒范梦阳李亚楠
Owner DONGHUA UNIV
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