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Titanium-tungsten alloy oxide nano-tube electrode with characteristic of in-situ vertical growth, preparation method and applications thereof

A titanium-tungsten alloy, vertical growth technology, applied in the field of pollution control and material chemistry, can solve the problems of weakening the catalytic performance of photocatalysts, easy to fall off from the body, small specific surface area of ​​the coating film, etc., to enhance the photocatalytic performance and increase the scope of use , the effect of efficient catalytic degradation ability

Inactive Publication Date: 2013-04-03
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the semiconductor coating film has the disadvantage that it is easy to fall off from the body after repeated use, and the specific surface area of ​​the coating film is small
These defects will greatly weaken the catalytic performance of photocatalysts to a certain extent.

Method used

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  • Titanium-tungsten alloy oxide nano-tube electrode with characteristic of in-situ vertical growth, preparation method and applications thereof
  • Titanium-tungsten alloy oxide nano-tube electrode with characteristic of in-situ vertical growth, preparation method and applications thereof
  • Titanium-tungsten alloy oxide nano-tube electrode with characteristic of in-situ vertical growth, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Preparation and characterization of a titanium-tungsten alloy oxide nanotube array for efficient photoelectric degradation of organic pollutants, which specifically includes the following steps:

[0028] A Ti plate with a purity of 99.9% and a W wire with a purity of 99.9% are mixed in a certain proportion, and melted in a high-temperature arc melting furnace under the protection of an argon atmosphere to obtain a Ti-W alloy. It was cut into samples with a size of 15×50×1 mm using a wire cutting machine. The exact mass percentage of W in the alloy was determined to be 3% by inductively coupled plasma-atomic emission spectrometry (Optima 2100, Perkin-Elmer). After the alloy plate was polished with 100# and 500# sandpaper in turn, it was polished into a mirror surface with metallographic sandpaper, and then ultrasonically cleaned in acetone, distilled water, and absolute ethanol for 15 minutes each. At room temperature, the pretreated titanium-tungsten alloy sheet wa...

Embodiment 2

[0035] A preparation of a titanium-tungsten alloy oxide nanotube array for photoelectrically degrading organic pollutants with high efficiency, specifically comprising the following steps:

[0036] A Ti plate with a purity of 99.9% and a W wire with a purity of 99.9% are mixed in a certain ratio, and melted in a high-temperature arc melting furnace under the protection of an argon atmosphere to obtain a Ti-W alloy. It was cut into samples with a size of 15×50×1 mm using a wire cutting machine. The exact mass percentage of W in the alloy was determined to be 3% by inductively coupled plasma-atomic emission spectrometry (Optima 2100, Perkin-Elmer). After the alloy plate was polished with 100# and 500# sandpaper in turn, it was polished into a mirror surface with metallographic sandpaper, and then ultrasonically cleaned in acetone, distilled water, and absolute ethanol for 10 minutes respectively. At room temperature, the pretreated titanium-tungsten alloy sheet was used as the ...

Embodiment 3

[0038] A preparation of a titanium-tungsten alloy oxide nanotube array for photoelectrically degrading organic pollutants with high efficiency, specifically comprising the following steps:

[0039] A Ti plate with a purity of 99.9% and a W wire with a purity of 99.9% are mixed in a certain ratio, and melted in a high-temperature arc melting furnace under the protection of an argon atmosphere to obtain a Ti-W alloy. It was cut into samples with a size of 15×50×1 mm using a wire cutting machine. The exact mass percentage of W in the alloy was determined to be 5% by inductively coupled plasma-atomic emission spectrometry (Optima 2100, Perkin-Elmer). After the alloy plate was polished with 100# and 500# sandpaper in turn, it was polished into a mirror surface with metallographic sandpaper, and then ultrasonically cleaned in acetone, distilled water, and absolute ethanol for 20 minutes respectively. At room temperature, the pretreated titanium-tungsten alloy sheet was used as the ...

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Abstract

The present invention relates to a titanium-tungsten alloy oxide nano-tube electrode with a characteristic of in-situ vertical growth, a preparation method and applications thereof, wherein the electrode can be applied in efficient photoelectric catalysis oxidation degradation of high concentration organic pollutants. According to the present invention, an argon arc melting method is adopted to prepare a titanium-tungsten (Ti-3W) alloy with uniform chemical components, and an electrochemical anodization method is adopted to generate a highly ordered Ti-W-O nano-tube array containing TiO2 and WO3 in a F<->-containing ethylene glycol solution; compared to the traditional tungsten ion-doped TiO2 nano-tubes and titanium-tungsten oxide composite films adopting TiO2 as a base, the titanium-tungsten alloy oxide nano-tube array of the present invention has characteristics of uniform dopant distribution, large specific surface area, high stability and high photoelectric catalysis performance; and the titanium-tungsten alloy oxide nano-tube electrode can be widely used in high concentration azo dye pollutant degradation researches, and has great environmental economic benefits.

Description

technical field [0001] The invention relates to the fields of pollution control and material chemistry, in particular to a titanium-tungsten alloy oxide nanotube array for efficient photocatalytic oxidation and degradation of azo dye pollutants. Background technique [0002] In the production of the textile industry, azo dyes are an important raw material and a large class of organic substances that cause increasing environmental hazards. These azo dyes are potentially toxic and difficult to biochemically dispose of. Their entry into the environment can cause serious damage to the ecosystem. Therefore, in the field of environment, it has important theoretical and practical significance to take active and effective measures to deal with and control azo dyes. In recent years, photocatalytic technology, as a major advanced oxidation technology, has been widely used in the treatment of environmental pollutants. TiO 2 Photocatalysts have become one of the most effective catal...

Claims

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Application Information

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IPC IPC(8): C02F1/46C02F1/32C02F1/72C25D11/26C02F103/30
Inventor 赵国华李明芳田弘毅刘梅川
Owner TONGJI UNIV
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