Preparation method and application of photo-thermal thermoelectric catalyst based on thermoelectric material

A technology of thermoelectric materials and catalysts, applied in chemical instruments and methods, physical/chemical process catalysts, carbon monoxide, etc., can solve problems such as unfavorable preservation and transportation, fruit tree rot, high energy consumption, etc., to improve catalytic reaction rate and optimize reaction Kinetics, effect of efficient catalytic conversion reaction progress
CN112403496AActive Publication Date: 2021-02-26TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2021-02-26

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Abstract

The invention belongs to the technical field of new materials and application thereof and non-metallic materials, and particularly relates to a preparation method and application of a photo-thermal thermoelectric catalyst based on a thermoelectric material. The photo-thermoelectric catalyst provided by the invention adopts a semiconductor thermoelectric material as a substrate, can effectively absorb light of a specific waveband to generate photo-generated electron hole pairs, and separates photo-generated carriers by utilizing a Seebeck effect caused by a temperature gradient generated by a solar photo-thermal effect. According to the photo-thermal thermoelectric catalyst disclosed by the invention, multiple effective utilization of solar energy resources is realized by utilizing a photo-thermal temperature gradient generated by the Seebeck effect. In addition, the photo-thermal electric effect can further improve the catalytic reaction rate by functionalizing the substrate material except for the surface chemical category, and can be applied to various reaction processes such as carbon dioxide reduction and the like. According to the catalyst, solar energy resources are fully utilized, and a thermoelectric material substrate is utilized to fuse basic processes of photochemistry and thermoelectricity physics, so that a novel, green and efficient reaction process is realized.
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Description

technical field

[0001] The invention belongs to the technical fields of new materials and their applications, and non-metallic materials, and in particular relates to a preparation method and application of a photothermal thermoelectric catalyst based on thermoelectric materials. Background technique

[0002] In the context of the gradual depletion of global fossil energy, the construction of a chemical system that uses carbon dioxide as a carbon molecule has gradually become the most competitive system in the future, in which it directly catalyzes the conversion of carbon dioxide gas into carbon monoxide, methane, formic acid, and ethylene. Chemicals are of great significance. Traditional thermocatalysis and electrocatalysis are faced with huge energy consumption and major environmental problems. Under the premise that non-renewable energy power supply accounts for a large proportion, it is still impossible to achieve net reduction of carbon dioxide. Among them, through The...

Claims

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