Plasma-type tungsten oxide-modified graphite phase carbon nitride nanosheet composite photocatalyst and preparation method and application thereof

Abstract

The invention discloses a plasma-type tungsten oxide-modified graphite phase carbon nitride nanosheet composite photocatalyst and a preparation method and application thereof. The composite photocatalyst comprises a plasma-type tungsten oxide and a graphite phase carbon nitride nanosheet. The plasma-type tungsten oxide attaches to the surface of the graphite phase carbon nitride nanosheet. The plasma-type tungsten oxide is W18O49. The preparation method comprises mixing the graphite phase carbon nitride nanosheet and a tungsten hexacarbonyl solution to obtain a precursor mixed solution and preparing a composite photocatalyst through a hydrothermal reaction. The composite photocatalyst has the advantages of high photocatalytic activity, wide photoresponse range, stable photocatalytic performance and good recyclability. The preparation method has the advantages of simple processes, operation easiness and low cost. The composite photocatalyst can be used for treating antibiotic waste water, can be used through a simple method, realizes a low cost, has a high removal rate, effectively degrades antibiotics in waste water and has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of functional composite photocatalysts, and relates to a graphite-phase carbon nitride nanosheet composite photocatalyst and its preparation method and application, in particular to a graphite-phase carbon nitride nanosheet composite photocatalyst modified by plasma-type tungsten oxide And its preparation method and application. Background technique [0002] In recent years, photocatalytic technology has developed rapidly, especially semiconductor-based photocatalytic degradation technology for the removal of environmental pollutants has attracted widespread attention from researchers, and the key to catalytic performance lies in whether there are semiconductor photocatalytic materials with good performance . Therefore, the design and preparation of highly efficient semiconductor photocatalytic materials has become the focus of research in the field of environmental photocatalysis. [0003] In the selectio...

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Problems solved by technology

[0004] At present, the materials with plasma effect are mainly noble metals (such as Ag, Au, etc.), but noble metals such as Ag are expensive, which will lead to very high cost of materials, which is not conducive to practical application and large-scale production; at the same time, it can be prepared into a composite with a special structure The material can also improve the utilization rate of light energy, but the commonly used preparation method needs to add a crosslinking agent to shape the material, and the preparation process is complicated

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