Method for synthesizing anatase type crystallizing titanium dioxide nano nuclear-shell or shell structure material by water phase one-step method

An anatase type, titanium dioxide technology, applied in the directions of titanium dioxide, titanium oxide/hydroxide, etc., can solve problems such as difficulty in hydrolysis, and achieve the effects of strong operability, simple method and process, and wide application prospects.
CN101077792AInactive Publication Date: 2007-11-28TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Publication Date
2007-11-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to preparation process of core-shell material and hollow material, and is especially water phase one-step synthesis process for preparing nanometer crystallized anatase type titania material in core-shell and hollow structure. Water soluble titanium peroxide precursor is treated through a sol-gel process so as to coat a nanometer titania layer onto the surface of polystyrene, and the nanometer titania layer in the shell is crystallized directly at relatively low temperature to form nanometer anatase type titania without needing sintering. Furthermore, the precursor may be controlled properly, so that the polystyrene core serving as the template may be dissolved spontaneously after the shell is formed and crystallized and nanometer hollow titania may be obtained directly in water phase. The present invention is simple, easy to operate, low in cost and suitable for batch production, and may find wide application in different aspects.
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Description

technical field

[0001] The invention relates to a preparation method of a core-shell-empty-shell structure material, in particular to a method for one-step synthesis of anatase-type crystallized titanium dioxide nano-core-shell or empty-shell structure material in an aqueous phase. Background technique

[0002] Core-shell and hollow-shell nanomaterials have great application prospects in the fields of catalysis, chromatography, protection of biologically active reagents, wastewater treatment, macromolecular slow-release systems, etc., and the controllable preparation of core-shell and hollow-shell nanomaterials is becoming increasingly The focus of people's research. Due to the photocatalytic activity of the nano-titanium dioxide core-shell and empty-shell structure, it has a wide range of application prospects in the fields of environmental purification, catalysis, coatings, photoelectric conversion, etc.; not only that, due to the low absorption of titanium dioxide in the ...

Claims

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