Preparation process of a p25-coated titanium dioxide nanotube array electrode material

A technology of nanotube array and titanium dioxide, which is applied in the growth of polycrystalline materials, chemical instruments and methods, crystal growth, etc., to achieve highly ordered orientation characteristics, increase specific surface area, and improve performance

Inactive Publication Date: 2011-11-30
XIANGFAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, up to now, no one has reported the synthesis of large tube interstitial space TiO 2 nanotube arrays, and the TiO is homogeneously coated with very active commercial P25 2 Nanotube arrays to obtain array electrode materials with larger specific surface area

Method used

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  • Preparation process of a p25-coated titanium dioxide nanotube array electrode material
  • Preparation process of a p25-coated titanium dioxide nanotube array electrode material
  • Preparation process of a p25-coated titanium dioxide nanotube array electrode material

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Concrete processing steps of the present invention are as follows:

[0022](1). Mix and stir 0.44g ammonium fluoride and 88ml lactic acid until fully dissolved, then add 9.8ml dimethyl sulfoxide and stir as the electrolyte for preparing titanium dioxide nanotube arrays; the thickness is 0.25mm, and the purity is 99.99%. The titanium foil is cut into a rectangular square of 2.5cm×4cm, polished with metallographic sandpaper and an aqueous solution of hydrofluoric acid and nitric acid for chemical polishing, cleaning, and drying as an anode for anodic oxidation;

[0023] (2). Self-made an anodic oxidation tank, using a platinum electrode as the cathode, adding the above-mentioned prepared electrolyte, and at 35°C, apply a DC voltage of 55V to oxidize for 15 minutes and then adjust to a DC voltage of 45V to oxidize After 12 hours, an array of titanium dioxide nanotubes with an amorphous structure can be obtained; then, annealing at 420°C for 1 hour to obtain a crystallized ...

Embodiment 2

[0029] (1). Mix and stir 0.44g ammonium fluoride and 88ml lactic acid until fully dissolved, then add 9.8ml dimethyl sulfoxide and stir as the electrolyte for preparing titanium dioxide nanotube arrays; the thickness is 0.25mm, and the purity is 99.99%. The titanium foil is cut into a rectangular square of 2.5cm×4cm, polished with metallographic sandpaper and an aqueous solution of hydrofluoric acid and nitric acid for chemical polishing, cleaning, and drying as an anode for anodic oxidation;

[0030] (2). Self-made an anodic oxidation tank, using a platinum electrode as the cathode, adding the above-mentioned prepared electrolyte, and at 35°C, apply a DC voltage of 55V to oxidize for 15 minutes and then adjust to a DC voltage of 45V to oxidize After 12 hours, an array of titanium dioxide nanotubes with an amorphous structure can be obtained; then, annealing at 420°C for 1 hour to obtain a crystallized titanium dioxide nanotube array;

[0031] (3).Put 0.015M P25 into a beaker ...

Embodiment 3

[0036] (1). Mix and stir 0.44g ammonium fluoride and 88ml lactic acid until fully dissolved, then add 9.8ml dimethyl sulfoxide and stir as the electrolyte for preparing titanium dioxide nanotube arrays; the thickness is 0.25mm, and the purity is 99.99%. The titanium foil is cut into a rectangular square of 2.5cm×4cm, polished with metallographic sandpaper and an aqueous solution of hydrofluoric acid and nitric acid for chemical polishing, cleaning, and drying as an anode for anodic oxidation;

[0037] (2). Self-made an anodic oxidation tank, using a platinum electrode as the cathode, adding the above-mentioned prepared electrolyte, and at 35°C, apply a DC voltage of 55V to oxidize for 15 minutes and then adjust to a DC voltage of 45V to oxidize After 12 hours, an array of titanium dioxide nanotubes with an amorphous structure can be obtained; then, annealing at 420°C for 1 hour to obtain a crystallized titanium dioxide nanotube array:

[0038] (3).Put 0.015M P25 into a beaker ...

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Abstract

The invention provides a preparation process of a P25-coated titanium dioxide nanotube array electrode material. Firstly, an anodic oxidation method is used, with titanium foil as the anode, and a mixed solution of ammonium fluoride, lactic acid and dimethylsulfame as the electrolyte to pre-prepare a large diameter. , tube spacing and long tube length, rough surface TiO2 nanotube array with large gap space; then, put the above pre-prepared array into a high-pressure reactor filled with commercial P25 coating solution for thermal infiltration and thermal deposition, and then rinse, After ultrasonication and annealing, the P25-coated titanium dioxide nanotube array electrode material can be obtained. This electrode material can be assembled into a working electrode of nano-devices such as dye-sensitized cells, photoelectrochemical cells, and photocatalysis after corresponding treatment processes. Electrode blank material with application value. Moreover, the preparation process has low cost, simple process and easy productization.

Description

technical field [0001] The invention belongs to the technical field of low-temperature liquid-phase method electrode material preparation of low-dimensional oxide nanostructure materials, and specifically relates to a method of coating P25 on a one-dimensional titanium dioxide nanotube array to obtain P25-coated TiO 2 Preparation process of nanotube array electrode material. Background technique [0002] In recent years, with the rapid development of the international social economy, technology and consumption levels, energy and environmental issues have become increasingly prominent and have become major issues that must be faced. Therefore, "the development and utilization of new renewable and clean energy, and the degradation of environmental pollutants" have become a major scientific research challenge and a hot research area. Compared to other semiconductors (CdS, ZnO, Fe 2 o 3 , NiO, etc.) materials, TiO 2 Due to its cheapness, non-toxicity, high activity, and high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26C30B30/02C30B29/16
Inventor 胡安正
Owner XIANGFAN UNIVERSITY
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