Heterojunction film photocatalyst as well as preparation method and application thereof

By preparing ZnO nanorod arrays on a flexible substrate and depositing purple phosphorus nanosheets to form a heterojunction thin film photocatalyst, the problems of low light energy utilization and difficult recycling of ZnO photocatalysts are solved, achieving high efficiency and stability, which is suitable for flexible optoelectronic devices.

CN122141704APending Publication Date: 2026-06-05HUAINAN NORMAL UNIV
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Patent Information

Application Number
CN202610265447.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-05
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing ZnO photocatalysts suffer from problems such as wide bandgap leading to limited ultraviolet light energy absorption, rapid carrier recombination, difficulty in recovering powder morphology, unsuitability of rigid substrates for flexible optoelectronic devices, insufficient carrier transport channels, and weak binding force.

Method used

A ZnO nanorod array layer was prepared on a flexible ITO-PEN substrate, and purple phosphorus nanosheets were deposited by self-adsorption method to form a pn-type heterojunction thin film photocatalyst, which combines efficient visible light absorption and carrier separation capabilities.

Benefits of technology

It improves photocatalytic efficiency, expands the photoresponse range, enhances carrier separation efficiency, and achieves catalyst stability and convenient recovery, making it suitable for flexible optoelectronic devices.

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Abstract

The invention relates to the technical field of preparation of thin film photocatalysts, in particular to a heterojunction thin film photocatalyst and a preparation method and application of the heterojunction thin film photocatalyst, and the VPNS / ZnO nanorod array heterojunction thin film photocatalyst is constructed on a flexible substrate ITO-PEN through a VPNS and a ZnO nanorod array. The excellent catalytic performance is shown in the aspect of sewage treatment through photocatalytic degradation of organic pollutants, and the requirement of sewage treatment through photocatalysis can be met. The VPNS / ZnO heterojunction thin film photocatalyst on the flexible substrate ITO-PEN has the advantages of being simple in preparation method, high in efficiency, good in stability, high in degradation efficiency, easy to recycle and the like.
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