Method for preparing nano zinc oxide using shell powder as carrier

Abstract

The invention discloses a preparation method of nanometer zinc oxide which takes shell powder as a carrier, and in particular relates to a reproducible porous nanometer zinc oxide powder which takes the shell powder as the carrier and the preparation method thereof. In the preparation method, zinc oxide is loaded by impregnation on the shell powder carrier; firstly, zinc salt solution with appropriate concentration is prepared, and then an activated shell powder carrier is impregnated in the zinc salt solution by certain proportion, and then the obtained solution is stirred and stayed for a certain time, and treated by low temperature and abstersion pretreatment and finally roasted at high temperature, so the nanometer zinc oxide forms high-strength bond with the shell powder and promotes the catalytic activity of the nanometer zinc oxide at the same time. Impregnation can be conducted for a plurality of times to increase load. The nanometer ZnO is characterized by small particle size, good compatibility with materials, high catalytic efficiency, good stability, good regenerability, and the like, and can be applied to the fields of plastics, rubbers, fibers, coatings, home appliances, paints, ceramics, water and environment treatment, pharmaceutical and hygienic articles, etc. In terms of sources of raw materials and production technology, the preparation method not only reduces the production cost of nanometer ZnO catalyst but also is helpful for disposal of the increasingly serious environmental problems, thus bearing great environmental protection significance.

Description

Technical field: [0001] The invention relates to nano-zinc oxide and a preparation method thereof, in particular to a reproducible porous nano-zinc oxide powder with shell powder as a carrier and a preparation method thereof, which belongs to the technical field of nanometer materials. Background technique: [0002] With the overuse of resources and serious pollution of nature, the ecological environment has been severely damaged, and there is an urgent need to develop functionally conscious materials that can use energy economically and effectively without polluting the environment. The application of semiconductor heterogeneous photocatalytic reactions in sewage treatment has generally attracted people's attention in recent years. Among many semiconductor photocatalyst materials, TiO 2 It is favored because of its stable chemical properties, cheap and easy to obtain, non-toxic and high catalytic efficiency. However, TiO 2 It also has its own limitations. The band gap is...

AI Technical Summary

Problems solved by technology

However, the glass surface is flat and smooth, and its adhesion to titanium dioxide is poor, which limits its wide application.

Metal carriers are generally expensive, and metal ions such as Cu 2+ 、Cr 3+ Plasma will enter the ZnO layer during heat treatment, destroying the ZnO lattice and reducing the catalytic activity of ZnO, and the metal surface is also like a glass surface, its adsorption is poor, and it is difficult to load

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