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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

Active Publication Date: 2015-09-02
WUHAN INSTITUTE OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
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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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  • Preparing method of simple substance bismuth/bismuth compound nanocomposite with oxygen vacancies
  • Preparing method of simple substance bismuth/bismuth compound nanocomposite with oxygen vacancies
  • Preparing method of simple substance bismuth/bismuth compound nanocomposite with oxygen vacancies

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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 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.

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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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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