Molecular sieve loaded BiOX photocatalyst, preparation method and application thereof

Abstract

The invention provides a molecular sieve loaded BiOX photocatalyst, a preparation method and an application thereof, belonging to the technical field of photocatalysis. The catalyst is a loaded catalyst using one or more of SBA-15, ZSM-5 and HY as a carrier and BiOX as an active component. The preparation method comprises the following two steps: soaking a molecular sieve into an organic solutionof bismuth nitrate and ammonium fluoride or ammonium chloride; and adding a precipitating agent to prepare the loaded BiOX catalyst. The catalyst is used for removing gas phase organic matters. The molecular sieve is led into the catalyst to be used as a carrier, thereby increasing the specific surface area of the catalyst, reducing the grain size and obviously improving the benzene degradation activity by the catalyst; and the preparation method is simple and easy and is beneficial to mass generalization.

Description

technical field

[0001] The invention relates to photocatalytic technology in environmental treatment, in particular to a preparation method of a supported bismuth oxyhalide photocatalyst. Background technique

[0002] Semiconductor photocatalytic oxidation technology can use light energy to oxidize and decompose pollutants at room temperature, and has broad application prospects in the treatment of environmental pollution. Commonly used titanium dioxide photocatalysts have low photon quantum efficiency, low solar energy utilization, and easy deactivation, which restrict the practical application of photocatalytic technology. The main ways to solve this problem are to modify the structure and composition of titanium dioxide, or to develop new photocatalysts other than titanium dioxide.

[0003] Bismuth-containing compounds are cheap and environmentally friendly, and have recently become a research hotspot in the field of new photocatalyst development. Bismuth oxychloride is...

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