Method for preparing porous hierarchical structure semiconductor photocatalytic material

Abstract

The invention discloses a method for preparing a porous hierarchical structure semiconductor photocatalytic material in the technical field of catalysts. The method comprises the following steps of: impregnating rape pollen in precursor solution of ferric nitrate, and performing oxidative firing treatment to obtain a ferric oxide material. The method is simple and flexible in process and low in cost; by effectively controlling the grain size and porous hierarchical structure of the ferric oxide, the photocatalyst material with good performance is obtained; and the prepared photocatalyst material with the porous hierarchical structure can catalytically decompose organic pollutants in the sun.

Description

Preparation method of semiconductor photocatalytic material with porous hierarchical structure technical field The invention relates to a method in the technical field of photocatalysts, in particular to a method for preparing a semiconductor photocatalytic material with a porous hierarchical structure. Background technique With the continuous discharge of industrial wastewater such as dye synthesis, printing and dyeing and the continuous use of various dyes, the number and types of dyes entering the environment are increasing, and the environmental pollution caused by dyes is becoming more and more serious. According to reports, about 60,000 tons of dyes are discharged into the environment in the form of waste every year in the world, especially the sewage containing organic dyes, which has had a huge impact on aquatic ecosystems and their boundary environments, and its poisoning incidents are increasingly occurring. Organic dyes are a large class of chemicals with stabl...

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Problems solved by technology

In recent years, the research on oxide semiconductor materials as photocatalysts has been very active. In practical applications, it has also been found that most catalyst materials have a narrow range of light energy utilization, and selective surface treatment such as doping modification or Organic and inorganic compounding is carried out to enhance its activity, which increases the difficulty and complexity of the catalyst preparation process

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