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an all solid state 3 /tungsten mesh electrode material and its preparation method and application

An electrode material and all-solid technology, applied in the field of all-solid WO3/tungsten mesh electrode materials and its preparation, can solve the problems of difficult recycling, low catalytic activity, easy curing, etc., and achieve the effect of avoiding easy curing

Active Publication Date: 2022-07-01
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, commonly used powder electrode materials are easy to solidify, difficult to recycle, easy to cause secondary pollution, and have low catalytic activity.

Method used

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  • an all solid state <sub>3</sub> /tungsten mesh electrode material and its preparation method and application
  • an all solid state <sub>3</sub> /tungsten mesh electrode material and its preparation method and application
  • an all solid state <sub>3</sub> /tungsten mesh electrode material and its preparation method and application

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preparation example Construction

[0021] The present invention provides an all-solid-state WO 3 / The preparation method of tungsten mesh electrode material, is characterized in that, comprises the following steps:

[0022] (1) mix tungsten mesh, hydrogen peroxide and water, carry out oxidation reaction, obtain mixed solution;

[0023] (2) mixing the mixed solution obtained in the step (1) with a structure directing agent, and performing a hydrothermal reaction to obtain an all-solid WO 3 / Tungsten mesh electrode material; the temperature of the hydrothermal reaction is 220-230° C., and the time of the hydrothermal reaction is 24-26 hours.

[0024] In the present invention, tungsten mesh, hydrogen peroxide and water are mixed to carry out oxidation reaction to obtain a mixed solution. In the invention, tungsten mesh and hydrogen peroxide are used as raw materials for oxidation reaction, and tungsten ions are generated and then dissolved in water.

[0025] The source of the tungsten mesh is not particularly...

Embodiment 1

[0042] Cut a 100-mesh tungsten mesh into a cuboid with a size of 2cm × 3cm × 1mm (the mass of the tungsten mesh is 0.2g), then ultrasonically clean it with acetone, ethanol and deionized water (ultrasonic frequency is 60kHz) for 30min, and finally blow it with the cold air of a hair dryer. dry to get a clean tungsten mesh;

[0043] The above tungsten mesh was placed in a beaker containing 30 mL of deionized water, and 0.1 mL of H 2 O 2 (the ratio of the mass of the tungsten mesh, the volume of hydrogen peroxide and the volume of water is 0.2g: 0.1mL: 30mL), ultrasonically reacted at a frequency of 50kHz for 12min; then add 0.0125g of thioacetamide (the ratio of thioacetamide to the tungsten mesh) The mass ratio is 0.0125:0.2), stirred at a rate of 600r / min for 35min, and then transferred to a Teflon-lined reactor for hydrothermal reaction. The reaction temperature is 220°C. After 25h of reaction, all-solid WO is obtained. 3 / Tungsten mesh electrode material.

[0044] fig...

Embodiment 2

[0057] Cut a 100-mesh tungsten mesh into a cuboid with a size of 2cm × 3cm × 1mm (the mass of the tungsten mesh is 0.2g), then ultrasonically clean it with acetone, ethanol and deionized water (ultrasonic frequency is 60kHz) for 30min, and finally blow it with the cold air of a hair dryer. dry to get a clean tungsten mesh;

[0058] The above tungsten mesh was placed in a beaker containing 30 mL of deionized water, and 0.1 mL of H 2 O 2 (the ratio of the mass of the tungsten mesh, the volume of hydrogen peroxide and the volume of water is 0.2g: 0.1mL: 30mL), ultrasonically reacted at a frequency of 50kHz for 12min; then add 0.0125g of thioacetamide (the ratio of thioacetamide to the tungsten mesh) The mass ratio is 0.0125:0.2), stirred at a rate of 600r / min for 35min, and then transferred to a Teflon-lined reaction kettle for hydrothermal reaction. The reaction temperature was 230°C. After 24h of reaction, all-solid WO was obtained. 3 / Tungsten mesh electrode material.

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Abstract

The invention relates to the technical field of electrode materials, and provides an all-solid-state WO 3 / Tungsten mesh electrode material and preparation method and application thereof. In the present invention, tungsten mesh, hydrogen peroxide and water are used as raw materials to carry out oxidation reaction to prepare tungsten ions, and then a structure-directing agent is added, and a one-step hydrothermal method is used to control the temperature and time of the hydrothermal reaction at the same time. Layer WO 3 Needle-like nanomaterials, prepared all-solid-state WO 3 / The tungsten mesh electrode material effectively avoids the problem of easy solidification of powder materials, and at the same time the needle-like WO grown on the surface of the tungsten mesh substrate 3 , providing almost all-round active sites for catalytic reactions, and the needle-like morphology helps to promote the reaction of active electrons with pollutants. The results of the examples show that the all-solid WO prepared by the present invention 3 / The tungsten mesh electrode material is the working electrode. When the external voltage is ‑1.2V, the removal rate of chloramphenicol can reach 100% within 120min.

Description

technical field [0001] The invention relates to the technical field of electrode materials, in particular to an all-solid-state WO 3 / Tungsten mesh electrode material and preparation method and application thereof. Background technique [0002] Antibiotics are a typical emerging pollutant of PPCPs. In biological treatment, antibiotics cannot be completely absorbed in the human body and animals, and the residual antibiotics will be excreted from the body in the form of metabolites or even in the original state, and accumulate in the environment to cause pollution, which is called antibiotic pollution. The use of antibiotics will also lead to drug resistance of pathogenic microorganisms, so that the effective dose of antibiotics to kill bacteria continues to increase, and the long-term discharge of low doses of antibiotics into the environment will increase the resistance of sensitive bacteria, and the sensitive bacteria will increase. The drug resistance genes can expand a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/30C02F1/461C02F101/34C02F101/38
CPCC02F1/46109C01G41/02C02F2001/46133C02F2101/34C02F2101/38C01P2002/72C01P2004/03C01P2004/10
Inventor 杨丽霞陈政霖马天柱代威力罗胜联
Owner NANCHANG HANGKONG UNIVERSITY