Preparation method of three-dimensional ordered macroporous titanium dioxide material

A titanium dioxide, three-dimensional ordered technology, applied in the field of preparation of three-dimensional ordered macroporous materials, can solve the problems of low preparation efficiency of three-dimensional ordered macroporous materials, material thickness and mechanical strength, etc., to overcome the difficult control of conditions and speed up the assembly speed , the effect of efficient assembly
CN102976404AInactive Publication Date: 2013-03-20JIANGNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2013-03-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of a three-dimensional ordered macroporous titanium dioxide material, and the preparation method comprises the following steps of: at a certain temperature, carrying out constant temperature evaporation and self-assembly on a binary-component mixed solution formed by monodisperse polystyrene microspheres emulsion and titanium dioxide sol to form a binary ordered material; and removing a template agent by roasting to form the three-dimensional ordered macroporous titanium dioxide material. In the three-dimensional ordered macroporous titanium dioxide material, titanium dioxide has anatase and a macroporous / mesoporous double-pore structure; the average pore sizes of macropores and mesoporous are respectively 220-336nm and 3-6nm; and the specific surface area is 240-350m<2> / g. The aperture size of the three-dimensional ordered macroporous titanium dioxide material can be controlled and adjusted by the microsphere size of the template agent polystyrene.
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Description

technical field

[0001] The invention belongs to the field of preparation of three-dimensional ordered macroporous materials, in particular to the preparation technology of three-dimensional ordered macroporous titanium dioxide. Background technique

[0002] Three-dimensional ordered macroporous materials have a series of characteristics such as strong periodicity of pore structure arrangement, narrow pore size distribution, uniform and adjustable pore size, and three-dimensional long-range order of the overall structure. They can be applied to catalyst carriers, filtration and separation materials, batteries and thermal resistance materials etc.

[0003] At present, three-dimensional ordered macroporous materials are generally prepared by the colloidal crystal template method. The main steps are: (1) preparing monodisperse microspheres and assembling them into a colloidal crystal template; (3) remove the template and obtain a three-dimensional ordered macroporous material. ...

Claims

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