A graphite phase carbon nitride / vanadium disulfide / carbon nanotube ternary heterojunction composite material, a preparation method and application thereof

By preparing a ternary heterojunction composite material of graphitic carbon nitride/vanadium disulfide/carbon nanotubes, the problem of insufficient absorption of graphitic carbon nitride photocatalysts in the visible light region was solved, achieving high efficiency and multifunctionality of photocatalysis. It can catalyze the generation of hydrogen peroxide from water and degrade antibiotics under visible light.

CN121244263BActive Publication Date: 2026-04-24SHANDONG UNIV
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Patent Information

Application Number
CN202511532242.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-10-24
Publication Date
2026-04-24
Estimated Expiration
2045-10-24

AI Technical Summary

Technical Problem

Graphitic carbon nitride photocatalysts suffer from insufficient absorption in the visible light region, low electrical conductivity, small specific surface area, and rapid recombination of photogenerated electron-hole pairs, which limits their efficiency in redox reactions. Existing binary heterojunction photocatalytic effects are poor and cannot achieve multifunctional composites.

Method used

A ternary heterojunction composite material of graphitic carbon nitride/vanadium disulfide/carbon nanotubes was prepared by hydrothermal treatment and calcination to form a layered nanosheet structure. Graphitic carbon nitride serves as the framework, with vanadium disulfide nanosheets and carbon nanotubes doped into it. The three components intertwine to form a heterojunction, which enhances light absorption and electrical conductivity and promotes electron separation and transport.

Benefits of technology

It improves the separation efficiency of photogenerated electron-hole pairs in photocatalysts, enhances photocatalytic activity under visible light, can simultaneously drive oxidation and reduction reactions, improves hydrogen peroxide generation efficiency and promotes antibiotic degradation, and has high photocatalytic performance and stability.

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Abstract

The application provides a graphite phase carbon nitride / vanadium disulfide / carbon nanotube ternary heterojunction composite material, and the photocatalyst is a layered nanosheet structure, which takes graphite phase carbon nitride as a skeleton, is doped with vanadium disulfide nanosheets and carbon nanotubes, and the graphite phase carbon nitride, the vanadium disulfide nanosheets and the carbon nanotubes are interwoven to form a heterojunction. The graphite phase carbon nitride, the vanadium disulfide and the carbon nanotube cooperate with each other to construct an efficient photocatalytic system, which can simultaneously drive oxidation (tetracycline hydrochloride degradation) and reduction (hydrogen peroxide generation) processes.
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