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A kind of preparation method of elemental bismuth/bismuth compound nanocomposite material containing oxygen vacancy

A technology of nanocomposite materials and bismuth compounds, which is applied in the field of one-step synthesis of elemental bismuth/bismuth compound nanocomposites containing oxygen vacancies, can solve the problems of non-universality, environmental pollution, and high cost, and achieve large-scale production and reduce Production costs, avoid uncontrollable effects

Active Publication Date: 2017-11-14
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods are expensive and not universal
[0005] At present, there are not many reports on the one-step synthesis of bismuth / bismuth compound nanocomposites containing oxygen vacancies. Zhang et al. (Physical Chemistry Chemical Physics 2015, 17, 8078-8086) reported a method using SnCl 2 Bi / BiOBr nanocomposites containing oxygen vacancies were synthesized as reducing agents, but with SnCl 2 As a reducing agent, the cost is high, and SnCl 2 Toxic, will cause environmental pollution

Method used

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  • A kind of preparation method of elemental bismuth/bismuth compound nanocomposite material containing oxygen vacancy
  • A kind of preparation method of elemental bismuth/bismuth compound nanocomposite material containing oxygen vacancy
  • A kind of preparation method of elemental bismuth/bismuth compound nanocomposite material containing oxygen vacancy

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Embodiment 1

[0026] Embodiment 1 The preparation method of the elemental bismuth / bismuth phosphate nanocomposite material containing oxygen vacancies comprises the following steps:

[0027] Take 0.1mmol of bismuth nitrate pentahydrate, add 30mL of ethylene glycol, ultrasonically dissolve, then add 0.1mmol of sodium tripolyphosphate to the above solution; the reaction solution is placed in a stainless steel autoclave lined with polytetrafluoroethylene. React at 180°C for 12 hours; remove residual solutes and solvents by centrifugal washing, dry the product at 60°C for 12 hours, and obtain elemental bismuth / bismuth phosphate nanocomposites containing oxygen vacancies after cooling.

Embodiment 2

[0028] Embodiment 2 The preparation method of the elemental bismuth / bismuth phosphate nanocomposite material containing oxygen vacancies, comprising the following steps:

[0029] Take 0.33mmol of bismuth nitrate pentahydrate, add 30mL of ethylene glycol, ultrasonically dissolve, then add 0.33mmol of sodium tripolyphosphate to the above solution; the reaction solution is placed in a stainless steel autoclave lined with polytetrafluoroethylene. React at 180°C for 12 hours; remove residual solutes and solvents by centrifugal washing, dry the product at 60°C for 12 hours, and obtain elemental bismuth / bismuth phosphate nanocomposites containing oxygen vacancies after cooling.

Embodiment 3

[0030] Embodiment 3 The preparation method of the elemental bismuth / bismuth phosphate nanocomposite material containing oxygen vacancies, comprising the following steps:

[0031] Take 0.33mmol of bismuth nitrate pentahydrate, add 30mL of ethylene glycol, ultrasonically dissolve, then add 0.33mmol of sodium tripolyphosphate to the above solution; the reaction solution is placed in a stainless steel autoclave lined with polytetrafluoroethylene. React at 180°C for 24 hours; remove residual solutes and solvents by centrifugal washing, dry the product at 60°C for 12 hours, and obtain elemental bismuth / bismuth phosphate nanocomposites containing oxygen vacancies after cooling.

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Abstract

The invention relates to a method for one-step synthesis of elemental bismuth / bismuth compound nanocomposites containing oxygen vacancies, comprising the following steps: adding a certain amount of bismuth nitrate pentahydrate and a precursor to ethylene glycol, and reacting under solvothermal conditions Finally, the obtained product is subjected to centrifugal washing to remove residual impurities, dried and cooled, and the elemental bismuth / bismuth compound nanocomposite material containing oxygen vacancies can be obtained. Beneficial results of the present invention are: (1) the present invention is a generally applicable method; (2) take ethylene glycol as solvent and reducing agent, utilize the weak reduction of ethylene glycol to generate oxygen hole and elemental bismuth, do not need Adding other reducing agents avoids the disadvantage of needing to add other reducing agents and is difficult to control; (3) It can synthesize elemental bismuth / bismuth compound nanocomposites containing oxygen vacancies with uniform size; (4) Solvothermal method is adopted, and the synthesis process is simple , effectively reduces the production cost, and can realize the large-scale production of the product.

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

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B82Y40/00
Inventor 陈嵘田凡袁梦倩杨浩赵慧平
Owner WUHAN INSTITUTE OF TECHNOLOGY
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