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A kind of preparation method of stable hydrogen tungsten bronze nanosheet

A technology of hydrogen tungsten bronze and nanosheets, which is applied in the field of nanomaterial preparation, can solve the problems of limited amount of single synthesis, long time-consuming hydrothermal synthesis, and restrictions on wide application, and achieve stable performance, good dispersion, and low cost Effect

Active Publication Date: 2018-05-22
江西善纳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses the cation exchange method in the process of preparing the precursor, so the amount of single synthesis is limited, and the hydrothermal synthesis method takes a long time. The reaction process requires high temperature and high pressure conditions, and the energy consumption is large. The requirements for equipment Therefore, the synthesis method of nano-tungsten bronze, especially hydrogen tungsten bronze, has become a bottleneck restricting its wide application.

Method used

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  • A kind of preparation method of stable hydrogen tungsten bronze nanosheet
  • A kind of preparation method of stable hydrogen tungsten bronze nanosheet
  • A kind of preparation method of stable hydrogen tungsten bronze nanosheet

Examples

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Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 5 g WO 2.72 , dispersed in 45 ml of water, then added 0.044 g of sodium alkylbenzene sulfonate, put into a planetary ball mill, ball milled for 3 hours, then took out the product, washed and filtered to obtain the precursor, and dispersed the precursor in 150 ml of ethanol In the mixed solution with a volume ratio of 1:1 to water, irradiate with ultraviolet light for 8 hours under continuous stirring, wash with ethanol, filter and dry, and then hydrogen tungsten bronze nanosheets can be obtained.

Embodiment 2

[0027] Weigh 5 g WO 2.72 , dispersed in 45 ml of ethanol, then added 0.044 g of polyacrylamide, put it into a planetary ball mill, ball milled for 5 hours, then took out the product, washed and filtered to obtain the precursor, and dispersed the precursor in 150 ml of ethanol and water The volume ratio is 1:1 in the mixed solution, irradiated with ultraviolet light for 8 hours under continuous stirring, washed with ethanol, filtered and dried, hydrogen tungsten bronze nanosheets can be obtained.

Embodiment 3

[0029] Weigh 5 g WO 2.72 , dispersed in 45 ml ethanol, then added 0.044 g octylphenol polyoxyethylene ether, put it into a planetary ball mill, ball milled for 6 hours, then took out the product, washed and filtered to obtain the precursor, and dispersed the precursor in 150ml Hydrogen tungsten bronze nanosheets can be obtained by irradiating under ultraviolet light for 12 hours in a mixture of ethanol and water with a volume ratio of 1:1, washing with ethanol, filtering and drying.

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Abstract

The invention discloses a method for preparing stable hydrogen tungsten bronze nanosheets. The method comprises the following steps: (1) weighing WO3-x (x is more than or equal to 0.05 and less than or equal to 1) according to a stoichiometric ratio and a preparation amount of H0.33WO3, preparing into dispersion according to a mass ratio 1 / 10-1 / 2 of WO3-x to a dispersing agent, and adding a proper amount of surfactant; (2) performing ball milling on the dispersion obtained in the step (1) for 0.5-12 hours; (3) washing and filtering the product obtained in the step (2); (4) preparing a mixed solution of water and ethanol, adding the product obtained in the step (3) into the mixed solution according to a mass ratio of 1-15%, and performing ultraviolet irradiation for 1-12 hours; (5) washing, filtering and drying the product in the step (4), thereby obtaining the hydrogen tungsten bronze nanosheets. According to the method disclosed by the invention, tungsten oxide in a reduction state serves as a raw material, the hydrogen tungsten bronze nanosheets are prepared by ball-milling superfining and ultraviolet irradiation, and the method has the characteristics of highly available raw materials, simple process, low cost, and environmental friendliness.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation and relates to a preparation method of hydrogen tungsten bronze nanosheets. Background technique [0002] WO 3 With its special properties, it is widely used in photocatalysis, sensors, photochromic and other fields. Tungsten bronze is prepared by doping alkali metal ions, ammonium ions and hydrogen ions into the unique tunnel structure in its crystal structure. , is a highly stable cation-doped metal oxide with dark blue metallic luster, generally used in M x WO 3 Its general formula shows the nature of a metal conductor or semiconductor, and its color and performance will also vary with the difference between M and x. At present, tungsten bronze nano-salt has been widely used in photocatalysis and energy-saving infrared absorption transparent thermal insulation coating because of its high absorption rate to ultraviolet and near infrared. [0003] At present, there are some m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G41/02B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G41/02C01P2002/72C01P2004/04C01P2004/20C01P2004/64
Inventor 陈伟凡方晓辰尧牡丹郭兰玉卓明鹏
Owner 江西善纳新材料科技有限公司