Ag (at) Au (at) HE / SH-P5 / Bi2MoO6-MoS2 composite photoelectric material as well as preparation method and application thereof

By preparing Ag@Au@HE/SH-P5/Bi2MoO6-MoS2 composite optoelectronic materials, combining Ag@Au core-shell nanoparticles with Bi2MoO6-MoS2 heterojunctions, the problems of low sensitivity and insufficient selectivity in the detection of hydroxyl radicals in the existing technology are solved, and efficient and sensitive hydroxyl radical detection is achieved.

CN122121309APending Publication Date: 2026-05-29NANTONG UNIV
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Patent Information

Application Number
CN202610071874.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-20
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing photoelectrochemical detection technologies have low sensitivity and insufficient selectivity for hydroxyl radicals (•OH), and the instruments are expensive and complex to operate, making it difficult to achieve efficient and sensitive detection.

Method used

By preparing Ag@Au@HE/SH-P5/Bi2MoO6-MoS2 composite optoelectronic materials, and utilizing the synergistic effect of Ag@Au core-shell nanoparticles and Bi2MoO6-MoS2 heterojunctions, combined with the host-guest recognition ability of columnar aromatic hydrocarbons, highly sensitive detection of •OH can be achieved.

Benefits of technology

It achieves highly sensitive detection of hydroxyl radicals, with a detection range of 0.75 μM to 200 μM and a low detection limit of 0.25 μM. It exhibits good reproducibility, excellent selectivity, and stability.

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Abstract

The invention discloses an Ag (at) Au (at) HE / SH-P5 / Bi2MoO6-MoS2 composite photoelectric material as well as a preparation method and application thereof, and belongs to the field of photoelectrochemistry, an Au film is modified on an Ag cube, the surface of Ag (at) Au NCs is coated with a layer of N-(2-hydroxyphenyl) acetamido and sulfydryl modified column [5] arene, Ag (at) Au (at) HE / SH-P5 is taken as a photoactive material, a signal on-off type photoelectrochemical PEC sensing system is designed, and the composite photoelectric material is used for detecting the photoelectric property of the composite photoelectric material. The probe is used for detecting hydroxyl radicals; the excellent conductivity of Ag-Au bimetallic, the high mobility of MoS2 and the band gap of Bi2MoO6 are utilized, the separation efficiency of photo-induced electrons and holes can be improved, compounding of electron-hole pairs is reduced, and based on the multiple signal amplification capacities of Ag-Au-HE / SH-P5 / Bi2MoO6-MoS2, the composite electrode shows an excellent linear range when detecting hydroxyl radicals.
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