g-C3N4-based composite photocatalytic material and preparation method thereof

Abstract

The invention relates to a g-C3N4-based composite photocatalytic material, which comprises the following materials of g-C3N4, alpha-Fe2O3 and RGO, wherein the alpha-Fe2O3 is dispersed on the surface of the g-C3N4, and the RGO is inserted between the alpha-Fe2O3 and the g-C3N4; the invention further relates to a preparation method of the g-C3N4-based composite photocatalytic material, which comprises the steps of mixing the g-C3N4 and the alpha-Fe2O3 through stirring, so as to obtain suspension liquid of a g-C3N4 / alpha-Fe2O3 binary compound; the uniformly dispersing GO in the suspension liquid; and finally reducing the GO into RGO, thus obtaining the g-C3N4 / alpha-Fe2O3 / RGO ternary composite photocatalytic material. The g-C3N4-based composite photocatalytic material provided in the technical scheme has the advantages that the photoresponse range is wide, the degradation efficiency on organic dyestuff RhB is high, and the photocatalytic performance is excellent; the preparation method thereof is simple in operation, low in cost, uses less equipment, is green, environment-friendly and pollution-free, and is capable of realizing large-scale production.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a g-C 3 N 4 / α-Fe 2 o 3 / RGO composite photocatalytic material and its preparation method. Background technique [0002] With the continuous development of the economy, environmental and energy crisis problems have become increasingly serious. Environmental pollution can be divided into the following categories: water pollution, air pollution, solid waste pollution and noise pollution, among which water pollution is the most serious. As a clean energy, solar energy is not only free to use and free from transportation, but also friendly to the environment, which is the basis for sustainable development. TiO since 1972 2 Since the discovery of the phenomenon of photocatalytic water splitting at semiconductor electrodes, the application of semiconductors in the field of photocatalysis has been extensively studied. Semiconductor photocatalytic materials are cur...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of g-C 3 N 4 Based composite photocatalytic material and preparation method thereof, which can effectively solve the problems of low photocatalytic activity of existing single semiconductor materials, short lifespan under the excited state of a single photocatalyst, and poor light absorption ability.

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