Preparing method of simple substance bismuth/bismuth compound nanocomposite with oxygen vacancies

A technology for nanocomposite materials and bismuth compounds is applied in the field of one-step synthesis of elemental bismuth/bismuth compound nanocomposite materials containing oxygen vacancies, which can solve the problems of lack of universality, environmental pollution and high cost, and achieve large-scale production and reduce Production costs, avoid uncontrollable effects
CN104874811AActive Publication Date: 2015-09-02WUHAN INSTITUTE OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WUHAN INSTITUTE OF TECHNOLOGY
Publication Date
2015-09-02

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Abstract

The invention relates to a preparing method of a simple substance bismuth / bismuth compound nanocomposite with oxygen vacancies. The method includes the following steps that a certain amount of bismuth nitrate pentahydrate and precursors are added into ethylene glycol, centrifugal washing is performed on obtained products after a solvent thermal condition reaction so that residual impurities can be removed, drying and cooling are performed, and then the simple substance bismuth / bismuth compound nanocomposite with the oxygen vacancies can be obtained. The method has the advantages that firstly, the method is universally applicable; secondly, the ethylene glycol serves as a solvent and a reducing agent, the oxygen vacancies and simple substance bismuth are produced through weak reducibility of the ethylene glycol, other reducing agents do not need to be added, and the defect that control is difficult because other reducing agents need to be added is avoided; thirdly, the simple substance bismuth / bismuth compound nanocomposite with the oxygen vacancies can be synthesized and is uniform in size; fourthly, a solvent thermal method is adopted, the synthesizing technology is simple, production cost is effectively reduced, and large-scale production of products can be achieved.
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Description

technical field

[0001] The invention belongs to the technical field of chemical engineering, functional materials, and photocatalytic material preparation, and specifically relates to a method for synthesizing elemental bismuth / bismuth compound nanocomposites containing oxygen vacancies in one step. Background technique

[0002] Environmental pollution is deepening day by day, seriously endangering human health, and photocatalytic technology has shown great potential in controlling environmental pollution. But traditional TiO 2 Due to its wide bandgap, photocatalytic materials can only absorb ultraviolet light and cannot effectively use sunlight. Therefore, the development of more effective photocatalysts to degrade pollutants has become a hot research topic for scientists at home and abroad. At present, bismuth-based photocatalysts have become a research hotspot of new photocatalytic materials because of their good photocatalytic effect on refractory organics under visible...

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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