Preparation process of dendritic titanium dioxide nanotube array electrode

A nanotube array, titanium dioxide technology, applied in electrode manufacturing, nanostructure manufacturing, nanotechnology, etc., to achieve the effect of increasing specific surface area, improving performance, and increasing specific surface area

Inactive Publication Date: 2011-02-09
XIANGFAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, no one has reported that in TiO 2 Research work on growing TBT on nanotube array

Method used

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  • Preparation process of dendritic titanium dioxide nanotube array electrode
  • Preparation process of dendritic titanium dioxide nanotube array electrode
  • Preparation process of dendritic titanium dioxide nanotube array electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Concrete processing steps of the present invention are as follows:

[0021] ①. Select titanium foil with a thickness of 0.2mm and a purity of 99.99% and cut it into 2×3cm 2 The square, with the diluted hydrofluoric acid and the aqueous solution of nitric acid, has carried out chemical polishing, removes the oxide on the surface, then washes and dries with absolute ethanol and secondary water as standby anode (that is, the preparation of TNTs by anodic oxidation method base material);

[0022] ②. Mix and stir 0.45g of ammonium fluoride and 85ml of lactic acid until fully dissolved, then add 10ml of dimethyl sulfoxide as the electrolyte for preparing TNTs by anodic oxidation;

[0023] ③.Using carbon rods as cathodes, making an anodic oxidation tank, titanium foils as anodes, adding the prepared electrolyte, and applying a DC voltage of 50V under laboratory temperature conditions for 9 hours to obtain TNTs with an amorphous structure; then , and annealed at 400°C for 1 h...

Embodiment 2

[0029] Concrete processing steps of the present invention are as follows:

[0030] ①. Use titanium foil with a thickness of 0.2mm and a purity of 99.99% and cut it into 2×3cm 2 The square, with the diluted hydrofluoric acid and the aqueous solution of nitric acid, has carried out chemical polishing, removes the oxide on the surface, then washes and dries with absolute ethanol and secondary water as standby anode (that is, the preparation of TNTs by anodic oxidation method base material);

[0031] ②. Mix and stir 0.41g of ammonium fluoride and 90ml of lactic acid until fully dissolved, then add 9ml of dimethyl sulfoxide as the electrolyte for preparing TNTs by anodic oxidation;

[0032] ③.Using carbon rods as cathodes, making an anodic oxidation tank, titanium foils as anodes, adding the prepared electrolyte, and applying a DC voltage of 50V under laboratory temperature conditions for 9 hours to obtain TNTs with an amorphous structure; then , and annealed at 400°C for 1 hour ...

Embodiment 3

[0037] Concrete processing steps of the present invention are as follows:

[0038] ①. Select titanium foil with a thickness of 0.2mm and a purity of 99.99% and cut it into 2×3cm 2 The square, with the diluted hydrofluoric acid and the aqueous solution of nitric acid, has carried out chemical polishing, removes the oxide on the surface, then washes and dries with absolute ethanol and secondary water as standby anode (that is, the preparation of TNTs by anodic oxidation method base material);

[0039] ②. Mix and stir 0.4g ammonium fluoride and 87ml lactic acid until fully dissolved, then add 8ml dimethyl sulfoxide as the electrolyte for preparing TNTs by anodic oxidation;

[0040] ③.Using carbon rods as cathodes, making an anodic oxidation tank, titanium foils as anodes, adding the prepared electrolyte, and applying a DC voltage of 50V under laboratory temperature conditions for 9 hours to obtain TNTs with an amorphous structure; then , and annealed at 400°C for 1 hour to obta...

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Abstract

The invention provides a preparation process of a dendritic titanium dioxide nanotube array electrode, which comprises: firstly, pre-preparing a titanium dioxide nanotube array by using an anodizing method and by using pure titanium foil as an anode and mixed solution of ammonium fluoride, lactic acid and dimethyl sulphoxide as electrolyte; secondly, growing nanorods with dendritic titanium dioxide on the pre-prepared titanium dioxide nanotubes serving as a host skeleton by using a low-temperature liquid-phase method and by using aqueous solution of hydrochloric acid and TTIP as growing solution, and thus obtaining the required dendritic titanium dioxide nanotube array; and finally, using the dendritic titanium dioxide nanotube array as a material to assemble the working electrodes of dye-sensitized solar cells, photoelectrochemical cells, photocatalysis devices and the like. The dendritic titanium dioxide nanotube array can improve the conversion efficiency of the cells and the efficiency of the photocatalytic pollutant degradation considerably; and the preparation process is low in cost, simple in process and easy in production.

Description

technical field [0001] The invention belongs to the technical field of preparation of low-dimensional oxide nanostructure materials and low-temperature liquid-phase method electrode materials, and specifically relates to a method of firstly preparing titanium dioxide nanotube arrays (TNTs) by anodic oxidation as a host skeleton, and then growing them by low-temperature liquid-phase method Dendritic titanium dioxide nanorods (TBT) are produced to obtain dendritic titanium dioxide nanotube arrays (TBNT), and then assembled into a preparation process for working electrodes of dye-sensitized cells, photoelectrochemical cells, and photocatalysts. Background technique [0002] In 1999, Zwilling et al reported the preparation of titanium dioxide (TiO 2 ) nanotube array (reference: Zwilling V. et al. Anodic Oxidation of Titanium and TA6V Alloy in Chromic Media. An Electrochemical Approach [J]. Electrochemical Acta, 1999, 45(6): 921-929). Since then, electrochemical self-organized l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B3/00H01L51/48H01G9/20H01G9/04H01M4/04
CPCY02E60/12Y02E10/542Y02E10/549Y02E60/10Y02P70/50
Inventor 胡安正
Owner XIANGFAN UNIVERSITY
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