Ag-TiO2 composite fiber preparation method

A composite fiber and nanofiber technology, which is applied in fiber processing, spinning solution preparation, fiber chemical characteristics, etc., can solve the problems of lack of control methods, etc., and achieve the effect of simple preparation process, good photoelectric conversion characteristics, and improved photoelectric conversion performance
CN104928802AInactive Publication Date: 2015-09-23ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
Publication Date
2015-09-23
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides an Ag-TiO2 composite fiber preparation method. The Ag-TiO2 composite fiber preparation method includes the steps of adding silver nitrate absolute ethyl alcohol in a glacial acetic acid solution of tetrabutyl titanate by drops, mixing, adding polyvinylpyrrolidone, stirring and standing until all air bubbles disappear to obtain a polymeric pecursor solution; moving the polymeric pecursor solution in an injector, preparing a nanofiber precursor by means of electrostatic spinning, and baking in the air to obtain an Ag-TiO2 composite fiber. Size and shape of the Ag-TiO2 composite fiber can be controlled by means of adjusting spinning parameters and procedure parameters of electrostatic spinning. A photoelectric property of a material can be optimized by means of adjusting an Ag nanocrystalline deposit rate in the Ag-TiO2 composite fiber. Compared with a TiO2 photoelectric conversion material in the prior art, the Ag-TiO2 composite fiber preparation method has the advantages that the defects of small specific surface area, high photo-generated electron-hole compositing probability rate and low photo-generated carrier quantization efficiency of a TiO2 material are overcome, Ag nanocrystallines in the Ag-TiO2 composite fiber are highly adjustable, and the Ag-TiO2 composite fiber preparation method is simple and easy to repeat.
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Description

technical field

[0001] The invention relates to nanofiber and nanocrystalline composite materials, the field of photoelectric conversion / energy, in particular to a kind of Ag-TiO 2 Preparation method of composite fiber. Background technique

[0002] Titanium dioxide (TiO 2 ) has important application prospects in thin-film solar cells because of its low cost and non-toxicity. Electrodes prepared using their semiconducting properties, as a new type of nanostructured semiconductor, have developed some practical applications in terms of optoelectronic properties.

[0003] However, TiO 2 Large band gap (anatase, 3.2ev), low utilization rate of sunlight, and easy recombination of photogenerated electrons and holes limit its large-scale application in the field of optoelectronics. At present, a variety of improved TiO 2 Photoelectric conversion efficiency method. Among them, the metal-semiconductor electrode formed by noble metal deposition can enrich the photo-generated ele...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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