Method for preparing nano-zinc oxide used as photocatalyst

A nano-zinc oxide, photocatalyst technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as unfavorable production safety and environmental protection, irritating environment, corrosiveness, etc. Achieve the effect of alleviating the dehydration collapse effect, ensuring safety and environmental protection, and high crystallinity
CN104307501AInactive Publication Date: 2015-01-28SOUTHWEST UNIVERSITY FOR NATIONALITIES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHWEST UNIVERSITY FOR NATIONALITIES
Publication Date
2015-01-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for preparing nano-zinc oxide used as a photocatalyst comprises the following steps: dissolving zinc nitrate, a complexing agent and glucose in deionized water at room temperature under stirring so as to form a solution; adding acrylamide and methylene-bisacrylamide into the solution in sequence; uniformly stirring the solution to obtain colorless and transparent sol; heating the obtained colorless and transparent sol in a water bath to form white wet gel; drying the obtained wet gel to obtain dry gel; grinding the dry gel to powder; sintering the powder for 4-5 hours at 600-700 DEG C so as to obtain nano-zinc oxide powder. The nano-zinc oxide prepared by using the method provided by the invention has the advantages of very high degree of crystallinity, uniform distribution of grain size and very good photocatalytic degradation activity for various organic dyes under the ultraviolet light.
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Description

technical field

[0001] The invention belongs to the technical field of preparation of photocatalyst zinc oxide, and in particular relates to a method for preparing nanometer zinc oxide by using a sol-gel method. Background technique

[0002] The liquid phase method is a common method for preparing nano zinc oxide, and the liquid phase method is mainly divided into hydrothermal method, sol-gel method, and microemulsion method. The nano-zinc oxide particles prepared by the hydrothermal method have perfect crystallization, and the process is relatively simple, without high-temperature roasting, but the particle size is large, the distribution is wide, easy to agglomerate, and it is easy to introduce impurities, and because the reaction requires high temperature and pressure , so the requirements for equipment are harsh, and the production cycle is long. The particle size of zinc oxide obtained by the microemulsion method is small and difficult to control, with many impurities,...

Claims

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