Bismuth molybdate/titanium carbide heterojunction two-dimensional photocatalytic material as well as preparation method and application thereof

Abstract

The invention discloses a bismuth molybdate / titanium carbide heterojunction two-dimensional photocatalytic material as well as a preparation method and application thereof. The two-dimensional photocatalytic material includes titanium carbide nanosheets and layered bismuth molybdate supported on the titanium carbide nanosheets. The preparation method includes the following steps: preparing bulk titanium carbide; preparing the titanium carbide nanosheets by using dimethyl sulfoxide; and preparing the above two-dimensional photocatalytic material through a hydrothermal reaction. The two-dimensional photocatalytic material has the advantages of low costs, easy availability, low recombination efficiency of photoelectrons and holes, strong catalytic performance, good redox activity, and less harm to the environment, is a green and economic photocatalytic material, can be widely used to treat pollutants in the environment, and has higher use value and better application prospects; and the preparation method provided by the invention has the advantages of a simple process, convenient operation, low raw material costs, low energy consumption, short consumed time, mild easily controlled reaction conditions, greenness and environmental protection, and shows good application prospects in synthesis of functional nanomaterials.

Description

technical field [0001] The invention belongs to the technical field of functional nanometer materials, and relates to a bismuth molybdate / titanium carbide heterojunction two-dimensional photocatalytic material and a preparation method and application thereof. Background technique [0002] With the rapid development of industrialization, society's demand for fossil fuels is increasing, but the combustion of fossil fuels will produce a large number of pollutants, which pose a great threat to human health. At present, many methods (such as Fenton method, biological method, adsorption method and electrocatalytic method, etc.) have been developed to degrade these pollutants, and good results have been achieved. However, these methods have certain defects. Firstly, the mineralization efficiency of pollutants is low, and many pollutants are degraded to produce intermediate products, which still have strong toxicity; secondly, some methods require the input of external energy, which...

AI Technical Summary

Problems solved by technology

In addition, considering the unique two-dimensional structure of bismuth molybdate, the combination of two-dimensional bismuth molybdate and two-dimensional titanium carbide to construct a 2D / 2D bismuth molybdate / titanium carbide heterojunction is an effective way to suppress photogenerated electron-hole recombination. However, there are still some difficulties in constructing this new type of 2D / 2D bismuth molybdate / titanium carbide heterojunction: (1) the preparation method of two-dimensional layered materials is relatively complicated and time-consuming; (2) 2D / 2D The conditions required for the preparation method of bismuth molybdate / titanium carbide heterojunction are relatively harsh; (3) The mass ratio of the two components in the 2D / 2D bismuth molybdate / titanium carbide heterojunction has a great influence on the catalytic performance

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