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Method for preparing platinum-gold double metal doped TiO2 nanotube electrode

A platinum bimetallic and nanotube technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc.

Inactive Publication Date: 2015-06-10
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Although there are many researches on the doping modification of powdered TiO2 with noble metals Pd, Pt, Ru, Ag, or Au , but there is no report on the doping of highly ordered, self-assembled TiO2 nanotubes using dual noble metal particles Pt and Au

Method used

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  • Method for preparing platinum-gold double metal doped TiO2 nanotube electrode
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  • Method for preparing platinum-gold double metal doped TiO2 nanotube electrode

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Embodiment 1

[0025] The pure titanium sheet was cut into small pieces of 100 mm × 100 mm, which were sequentially polished with 1000# emery paper until no obvious scratches could be seen, then ultrasonically dipped and cleaned in distilled water and acetone for 10 minutes, and then heated in 2.0mol / L H 3 PO 4 After ultrasonic treatment for about 10 minutes, rinse with deionized water and dry in a vacuum oven for later use.

[0026] A stable voltage and current power supply with a range of 0-30V is used. The pretreated high-purity titanium sheet is used as the working electrode (connected to the positive electrode), and the titanium sheet with the same surface area as the working electrode is used as the counter electrode (connected to the negative electrode). The oxidation effect, the positive and negative electrodes have the same area, the same material, and the same pretreatment process of titanium sheet). The electrolyte is a mixed solution of 0.25mol / L sodium fluoride and 0.50mol / L ph...

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Abstract

The invention relates to a method for preparing an electrode and particularly relates to a method for preparing a platinum-gold double metal doped TiO2 nanotube electrode. The method comprises the following steps: (1) preparing a TiO2 nanotube on a titanium substrate in the mixed electrolytic solution of sodium fluoride and phosphoric acid through anodizing and calcining; and (2) applying platinum and gold to the surface of the TiO2 nanotube in two steps in the electrolytic deposition solution of chloroauric acid and potassium sulfate and the electrolytic deposition solution of chloroplatinic acid and potassium sulfate through reducing at a constant potential to obtain the platinum-gold double metal doped TiO2 nanotube electrode. The platinum-gold double metal doped TiO2 nanotube electrode prepared by adopting the method has the advantages that platinum and gold particles are small in size and uniform in distribution. The platinum-gold double metal doped TiO2 nanotube electrode has the activity of eclectically catalyzing and oxidizing methanol, ethanol and glycerol, has a good effect of degrading when being used for photo-eclectically catalyzing and oxidizing organic matters and is improved in photo-eclectically catalyzing properties significantly.

Description

technical field [0001] The invention relates to a method for preparing electrodes, in particular to a method for preparing platinum-gold double-metal doped TiO 2 Nanotube Electrode Approach. Background technique [0002] Titanium dioxide (TiO 2 ) is an important inorganic semiconductor functional material, which has the characteristics of moisture sensitivity, gas sensitivity, dielectric effect, photoelectric conversion and superior photocatalytic performance. It is used in the storage and utilization of solar energy, photoelectric conversion, wastewater treatment, dielectric materials, Environmental purification, coatings, catalysts, photochromism and photocatalytic degradation of environmental pollutants have important application prospects, and have become one of the hot research topics at home and abroad. And it will probably become the most potential emerging industry in the future. [0003] Titanium dioxide nanotubes (TiO 2 -NTs) are nano-TiO 2 A form of existen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26C25D5/10B01J23/52C02F1/461C02F101/30
CPCY02W10/37
Inventor 段德良王家强闫智英李懿舟王伟陈永娟和佼
Owner YUNNAN UNIV
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