A material for degrading soil organic pollutants

By preparing a nanosheet self-assembled structure of zinc oxide/indium oxide porous microspheres, the problems of photogenerated electron-hole recombination and low specific surface area of ​​existing photocatalytic materials are solved, achieving efficient degradation of soil organic pollutants and making it suitable for large-scale production.

CN119406398BActive Publication Date: 2026-05-26TIANJIN UNIV
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Patent Information

Application Number
CN202411553530.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-02
Publication Date
2026-05-26
Estimated Expiration
2044-11-02

AI Technical Summary

Technical Problem

Existing photocatalytic materials suffer from problems such as severe recombination of photogenerated electrons and holes, low specific surface area, complex preparation process, unstable structure, and low degradation efficiency when degrading soil organic pollutants, which limit their large-scale promotion and application.

Method used

A composite material using zinc oxide/indium oxide porous microspheres is used to form a porous spherical structure through the self-assembly of nanosheets, which improves the specific surface area and the separation efficiency of photogenerated carriers. The preparation process is simple and the material structure is stable.

Benefits of technology

It achieves efficient adsorption and rapid degradation of soil organic pollutants, improves photocatalytic activity and degradation efficiency, and is suitable for large-scale production applications.

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Abstract

This application relates to a material for degrading organic pollutants in soil and its preparation method, characterized by the following steps: (1) weighing zinc salt, indium salt and sodium acetate; (2) adding the zinc salt, indium salt and sodium acetate weighed in step (1) to a mixed solvent of ethylene glycol / water, and stirring magnetically to form a uniform mixed solution; placing the uniformly mixed solution in a reaction vessel and reacting at 150-180°C in an oven for 10-15 hours; (3) centrifuging the solution obtained in step (2) after natural cooling to obtain the product, and washing it alternately with ethanol and deionized water; (4) placing the washed material in a tube furnace and calcining it at 300-400°C for 1-2 hours to obtain a zinc oxide-indium oxide composite material. The material has a stable structure, a simple preparation process, and a high degradation rate for organic pollutants in soil.
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