Preparing method for embellish titanium dioxide nanotube array electrode material embellished by cadmium selenide nano-particles

A nanotube array and nanoparticle technology, which can be used in electrode manufacturing, active material electrodes, hybrid capacitor electrodes, etc., can solve the problems of high photogenerated electron-hole pair recombination rate, narrow light absorption wavelength range, and low photocatalytic activity. , to achieve the effect of good photocatalytic and photoelectric catalytic performance, strong binding force and low cost

Inactive Publication Date: 2014-01-01
SHANGHAI NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] TiO 2 There are two main problems in the practical application of nanotube arrays: one is that the light absorption wavelength range is narrow, mainly in the ultraviolet region, and only about 4% of sunlight can be used; the other is that the recombination rate of semiconductor photogenerated electron-hole pairs is relatively low. High, low photocatalytic activity
Currently, CdSe-modified TiO 2 Most of the methods use deposition method and connection method, resulting in weak binding force between the two and obstacles to electron transmission.

Method used

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  • Preparing method for embellish titanium dioxide nanotube array electrode material embellished by cadmium selenide nano-particles
  • Preparing method for embellish titanium dioxide nanotube array electrode material embellished by cadmium selenide nano-particles
  • Preparing method for embellish titanium dioxide nanotube array electrode material embellished by cadmium selenide nano-particles

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Experimental program
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Effect test

Embodiment 1

[0030] Cut the 0.3mm thick pure titanium foil into 33.0mm × 20.0mm × 0.3mm sheets, and ultrasonically clean them in acetone and ethanol in turn to remove the soluble organic matter on the surface, and then ultrasonically clean them with deionized water. Dry overnight at room temperature; apply 10V voltage, at 0.4mol / L NH 4 F. 0.4mol / L H 3 PO 4 Nanotube arrays can be obtained after anodic oxidation for 10 hours; the nanotube arrays are rinsed with deionized water, and then placed in deionized water for ultrasonic cleaning for 5 minutes, then taken out and dried at 500 °C, 2 °C / Min conditions, calcination for 2 h to obtain anatase phase of titanium dioxide nanotube arrays. Then, the obtained nanotube array electrode was used as the working electrode, the platinum sheet was used as the counter electrode, and the saturated calomel electrode was used as the reference electrode. Nano metal particles Cd were deposited on the surface of the TiO2 nanotube array and the inner wall ...

Embodiment 2

[0032] Cut the 0.3mm thick pure titanium foil into 33.0mm × 20.0mm × 0.3mm sheets, and ultrasonically clean them in acetone and ethanol in turn to remove the soluble organic matter on the surface, and then ultrasonically clean them with deionized water. Dry overnight at room temperature; apply 20V voltage, at 0.2mol / L NH 4 F. 0.2mol / L H 3 PO 4In the aqueous solution, nanotube arrays can be obtained after anodizing for 8 hours; the nanotube arrays are rinsed with deionized water, ultrasonically cleaned in deionized water for 2 minutes, taken out and dried, and dried at 500°C, 2°C / Under the condition of min, calcined for 2h to get titanium dioxide nanotube arrays in anatase phase. Then, the obtained nanotube array electrode was used as the working electrode, the platinum sheet was used as the counter electrode, and the saturated calomel electrode was used as the reference electrode. A bias voltage of -1.0V was applied to the working electrode by the constant potential deposit...

Embodiment 3

[0034] Cut the pure titanium foil with a thickness of 0.3mm into a sheet of 33.0mm×20.0mm×0.3mm, ultrasonically clean it in acetone and ethanol in turn to remove soluble organic matter on the surface, and then ultrasonically clean it with deionized water. Dry overnight at room temperature; apply 20V voltage, in 0.2mol / L NH 4 F, 0.1mol / L H 3 PO 4 In the aqueous solution, nanotube arrays can be obtained after anodizing for 7 hours; the nanotube arrays are rinsed with deionized water, ultrasonically cleaned in deionized water for 1 min, taken out and dried, and dried at 500 °C, 2 °C / Under the condition of min, calcined for 2h to get titanium dioxide nanotube arrays in anatase phase. Then, the obtained nanotube array electrode was used as the working electrode, the platinum sheet was used as the counter electrode, and the saturated calomel electrode was used as the reference electrode. A bias voltage of -2.0V was applied to the working electrode by the constant potential deposi...

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Abstract

The invention discloses a preparing method for embellish titanium dioxide nanotube array electrode material embellished by cadmium selenide nano-particles. The preparing method comprises the following steps that (1), a pure titanium piece is used as a substrate, and titanium dioxide nanotube arrays with orderly heights are obtained in fluoride electrolyte in an anodic oxidation method; (2) the titanium dioxide nanotube arrays are used as cathodes, CdC12 serves as electrolyte, super-fine metal Cd nano-particles are deposited to the surfaces and the inner sides of titanium dioxide nanotubes in a potentiostatic deposition method, and CdO-TiO2 nanotube arrays are further obtained in an oxidized mode; (3) the CdO-TiO2 nanotube arrays are placed in Na 2SeSO3 solution, and CdSe-TiO2 nanotube arrays are obtained in a displacement mode. The titanium dioxide nanotube array electrode material made in the method has the advantages of being large in surface ratio, excellent in photoelectrocatalysis performance, good in visible light response, stable in structure and the like, and can be applied to photoelectrocatalysis organic pollution degradation and aquatic hydrogen decomposition.

Description

technical field [0001] The invention relates to a preparation process of an electrode material, in particular to a preparation method of a cadmium selenide nanoparticle modified titanium dioxide nanotube array electrode material. Background technique [0002] With the rapid economic development, energy and environmental problems are becoming more and more serious, and the development and utilization of new energy has become an inevitable development trend. Solar energy is the most abundant sustainable energy in nature. Therefore, the use of sunlight to develop new energy and reuse energy is an important research hotspot for future energy development. [0003] TiO was discovered in 1972 by Fujishima and Honda of the University of Tokyo, Japan 2 After the photocatalytic properties of semiconductor materials, the world has begun to set off a research upsurge in the photocatalysis of semiconductor materials, in order to convert solar energy into required clean energy or effecti...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G11/22H01M4/02H01M4/04
CPCY02E60/12Y02E60/10
Inventor 李贵生李芳廉孜超李和兴
Owner SHANGHAI NORMAL UNIVERSITY
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