Method for preparing anatase porous TiO2 spheres, core-shell structure and hollow spheres

A core-shell structure, anatase technology, applied in the field of photocatalytic materials, can solve problems such as limitations and hinder the development of template-free preparation methods and industrial applications, and achieve the effects of low cost, improved operability, and narrow size distribution
CN102730753AInactive Publication Date: 2012-10-17INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Publication Date
2012-10-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the photocatalytic material field, concretely relates to a method for preparing anatase porous TiO2 spheres, a core-shell structure and hollow spheres. The method comprises the following steps: dissolving titanium salt in water, then adding a HNO3 solution and carrying out a constant temperature reaction in a reaction vessel to obtain sediments; washing by deionized water until pH value presents neutrality, and drying to obtain the TiO2 powder. The invention is characterized in that TiO2 is replaced HF for taking as a corrosive agent, the method is a fluorine-free preparation process, the TiO2 with solid spheres, the core-shell structure and hollow spheres can be prepared by controlling reaction conditions, thereby the dangerousness of the preparation process can be substantially reduced, the maneuverability is enhanced, so that the method is suitable for requirements of large-scale production and industrial application, and possesses good application prospect.
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Description

technical field

[0001] The invention belongs to the field of photocatalytic materials, in particular to a method for preparing anatase porous titanium oxide balls, core-shell structures and hollow balls. Background technique

[0002] TiO 2 It is a photocatalytic material that has been widely studied and applied. It is non-toxic, harmless, and has very stable chemical properties. It has very good application prospects in the fields of photocatalytic degradation of organic matter, photocatalytic sterilization, water splitting to hydrogen production, and dye-sensitized solar cells. TiO 2 The morphology and structure are important factors affecting its photocatalytic performance. Among many different shapes and structures, hollow spheres and core-shell structures are due to their unique properties (such as: low density, high surface / volume ratio, good Permeability, high light-harvesting ability) has attracted much attention.

[0003] Common methods for preparing hollow struc...

Claims

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