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Prepn process of nanometer titania ring

A titanium dioxide and nano-ring technology, applied in the fields of chemistry and chemical industry, can solve the problems of high cost, expensive equipment and the like, and achieve the effects of low cost, simple preparation process and easy mass production

Inactive Publication Date: 2007-06-06
TIANJIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

So far, several nanorings have been prepared, such as ZnO and SnO 2 Nanorings, Au nanorings, however, in the preparation of nanoring materials, the existing technical route usually requires the use of expensive instruments and equipment, the cost is high, and there are still many technical difficulties to be overcome

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  • Prepn process of nanometer titania ring
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Embodiment Construction

[0008] TiO of the present invention 2 The preparation method of nano ring is made by following steps:

[0009] (1) Prepare polystyrene nanosphere emulsion by emulsion polymerization: polystyrene nanosphere emulsion is made of monomer styrene, emulsifier sodium lauryl sulfate, buffering agent sodium bicarbonate, water and initiator potassium persulfate Prepared by emulsion polymerization in a constant temperature water bath at 80°C, the molar ratio of styrene, sodium lauryl sulfate, sodium bicarbonate, water and potassium persulfate is 1:0.001~0.01:0.005~0.05:20~60: 0.005~0.05. In the emulsion, the size of the polystyrene balls is uniform, and the diameter is between 40 and 100 nm.

[0010] (2) Preparation of TiO by sol-gel method 2 Sol: Mix butyl titanate, absolute ethanol and diethanolamine in a molar ratio of 1:2-10:0.2-0.5, and mix them for 2-3 hours under constant stirring to obtain TiO 2 Sol.

[0011] (3) Polystyrene emulsion and TiO 2 After the sol is stirred and m...

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Abstract

The present invention discloses preparation process of nanometer TiO2 ring, and features that through emulsion polymerization process to synthesize nanometer polystyrene ball, the subsequent sol-gel process to coat the nanometer polystyrene ball with colloidal TiO2 particle in the thickness of 40-500 nm, and final heat treatment to eliminate nanometer polystyrene ball, nanometer TiO2 ring is prepared. The present invention prepares nanometer polystyrene ball of different diameters as template so as to prepare nanometer TiO2 ring of required size, and the preparation process of nanometer TiO2 ring is simple, low in cost and suitable for large scale production. The said process may be also applied in preparing nanometer ring of ZnO, SnO2, Al2O3 and other oxides.

Description

【Technical field】 [0001] The invention relates to the fields of chemistry and chemical industry, in particular to a method for preparing a nanomaterial titanium dioxide nanoring. 【Background technique】 [0002] In recent years, various ring nanostructures have attracted extensive attention due to their unique physical and chemical properties and potential applications in the fields of optics, electricity, and storage. So far, several nanorings have been prepared, such as ZnO and SnO 2 Nanorings, Au nanorings, however, in the preparation of nanoring materials, the existing technical route usually requires the use of expensive instruments and equipment, the cost is high, and there are still many technical difficulties to be overcome. 【Content of invention】 [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for preparing titanium dioxide nanorings based on polystyrene nanospheres as templates. [0004] The sch...

Claims

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Application Information

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IPC IPC(8): C01G23/047B82B3/00
Inventor 袁志好叶琳段月琴闫晓娜
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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