A tio2 hierarchical structure with visible light response and its preparation method

A hierarchical structure, visible light technology, applied in chemical instruments and methods, nanotechnology for materials and surface science, physical/chemical process catalysts, etc., can solve the problems of low photoelectric energy conversion efficiency, low visible light response, etc. Uniform appearance, large specific surface area and low cost
CN106882840BInactive Publication Date: 2019-03-22CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Publication Date
2019-03-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

A TiO with visible light response 2 The preparation method of the hierarchical structure belongs to the preparation method of semiconductor photocatalysis and photoelectrochemical materials. First, dissolve the fluoride salt in water, add acetic acid dropwise into the fluoride salt solution, and continue stirring; then add tetra-n-butyl titanate dropwise into the mixed solution, and continue stirring; place the mixed solution in a hydrothermal reaction kettle , raise the temperature to 140~180℃ and allow it to react for 8~16h; after cooling the reactor naturally, take out the precipitate, centrifuge or filter, wash and dry; raise the temperature to 300~550℃ in an air atmosphere, and keep sintering for 0.5~3h . The prepared TiO 2 Hierarchical nanostructures have the advantages of large specific surface area, visible light response, and single-crystal structure, and are suitable for applications in photocatalytic degradation of pollutants, photoelectrocatalytic water splitting, and hydrogen production. It has the advantages of simple method, non-toxicity and easy operation. It has low cost and is suitable for industrial production.
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Description

technical field

[0001] The invention relates to a preparation method of a semiconductor photocatalytic material, especially a TiO with visible light response 2 Preparation methods of hierarchical nanomaterials. Background technique

[0002] As a green, clean and abundant renewable energy, the application prospect of solar energy is very promising, and the efficient use of solar energy has also become a concern of the world. Traditional solar energy utilization methods mainly include photothermal and photovoltaic, among which photovoltaic has better utilization efficiency and the best commercialization prospect. At present, low-cost photovoltaic technologies are worthy of attention, such as dye-sensitized solar cells and perovskite solar cells. These low-cost photovoltaic technologies all require the use of TiO 2 This semiconductor photocatalytic material has the advantages of stable performance, low cost, large specific surface area and high activity. In addition to phot...

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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