Silicon-based covalent organic framework photoelectrode and preparation method and application thereof

A covalent organic framework and photoelectrode technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, catalyst regeneration/reactivation, etc., can solve the problem of photocatalyst and electronic mediator loss, limited improvement of regeneration efficiency, The number of electrons is small, etc., to achieve the effect of improving electron transfer efficiency, preventing corrosion, and being easy to obtain
CN114685802APending Publication Date: 2022-07-01THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
Publication Date
2022-07-01

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Abstract

The invention provides a silicon-based covalent organic framework photoelectrode and a preparation method and application thereof. The silicon-based covalent organic framework photoelectrode comprises a silicon substrate, and an electron conduction layer, a covalent organic framework layer and an electron mediator layer which are sequentially arranged on one side of the silicon substrate from bottom to top. According to the invention, the electron mediator is fixed on the covalent organic framework layer in a mode of forming coordinate bonds, electron transfer between the electron mediator and the covalent organic framework layer can be greatly promoted, and meanwhile, the photoelectrode is constructed into a stacked arrangement structure, so that efficient transfer of electrons between layers can be promoted; and finally, the electron transfer efficiency between the electron mediator and the silicon substrate is improved, and in-situ recovery and utilization of the electron mediator are realized. By means of the photoelectrode, the catalytic activity of photoelectrochemical coenzyme NAD (P) H regeneration can be effectively improved, meanwhile, the preparation method is simple and convenient, complex operation is not needed, and large-scale application in industrial production is facilitated.
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Description

technical field

[0001] The invention belongs to the technical field of photoelectrochemical coenzyme regeneration, and relates to a photoelectrode and a preparation method thereof, in particular to a silicon-based covalent organic skeleton photoelectrode and a preparation method and application thereof. Background technique

[0002] In recent years, enzymatic reactions have been widely used in the chemical synthesis industry. Most enzymatic reactions require nicotinamide coenzymes (NAD(P)H / NAD(P) + ) as a direct donor of electrons or protons, and in industrial production, continuous supply of coenzymes is an important condition to ensure the continuous and efficient enzymatic reactions. However, the coenzyme itself is expensive, so how to achieve efficient regeneration and recycling of coenzymes has become an urgent problem to be solved. At present, photochemical, electrochemical and photoelectrochemical methods can be used to achieve coenzyme regeneration, in which photoe...

Claims

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