Metal oxide modified TiO2 nanometer tube array electrode and preparation method thereof

A nanotube array and nanotube technology, applied in the direction of anodic oxidation, electrolytic coating, surface reaction electrolytic coating, etc., can solve the problems of few reports on the preparation methods of nanotube electrodes, achieve good photoelectric catalytic activity and visible light response characteristics, Effect of increased absorption and low cost

Inactive Publication Date: 2012-02-15
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Currently, metal oxides modify TiO 2 There are few

Method used

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  • Metal oxide modified TiO2 nanometer tube array electrode and preparation method thereof
  • Metal oxide modified TiO2 nanometer tube array electrode and preparation method thereof
  • Metal oxide modified TiO2 nanometer tube array electrode and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0033] Taking metal Fe as an example, the preparation process is as follows figure 1 shown.

[0034] figure 2 Preparation of TiO for anodic oxidation 2 The schematic diagram of the device of the nanotube electrode, including a titanium sheet 1, a counter electrode 2, a magneton 3, a reaction solution 4, and a DC stabilized power supply 5.

[0035] 1) Pure titanium sheet (thickness 0.35mm, area 5cm 2 ) with sandpaper until the surface is smooth, and then ultrasonically clean with acetone, absolute ethanol and deionized water for 10 min each. With the titanium plate as the anode and the copper sheet (2cm*4cm) as the cathode, it contains 0.5wt% NaF and 0.5MNa 2 SO 4 In aqueous solution, anodized at a constant oxidation voltage of 20V for 5h. Rinse the prepared sample with deionized water, air-dry, heat up to 500°C at 2°C / min in an air atmosphere, then anneal at a constant temperature for 2 hours, and then cool at a rate of 30°C / min to obtain TiO 2 Nanotube array electrode...

Embodiment 2

[0040] 1) Pure titanium sheet (thickness 0.35mm, area 5cm 2 ) with sandpaper, and then ultrasonically cleaned with acetone, absolute ethanol and deionized water for 10 min each. With a titanium plate as the anode and a copper sheet (2cm*4cm) as the cathode, in a solution containing 0.5wt% NaF and 0.5M Na 2 SO 4 In aqueous solution, anodized at a constant oxidation voltage of 20V for 5h. Rinse the prepared sample with deionized water, air-dry, heat up to 500°C at 2°C / min in an air atmosphere, then anneal at a constant temperature for 2 hours, and then cool at a rate of 30°C / min to obtain TiO 2 Nanotube array electrodes.

[0041] 2) Prepare 0.1M Cu(NO 3 ) 2 solution, the TiO 2 The nanotube array electrode was immersed in it for 20min and sonicated. Then with the TiO 2 The nanotube array electrode is the cathode, the platinum sheet is the anode, 0.1M Na 2 SO 4 As electrolyte, constant voltage 8V, electrolyte temperature 85°C, electrodeposition for 20min. Turn off the p...

Embodiment 3

[0044] 1) Pure titanium sheet (thickness 0.35mm, area 5cm 2 ) with sandpaper, and then ultrasonically cleaned with acetone, absolute ethanol and deionized water for 10 min each. With a titanium plate as the anode and a copper sheet (2cm*4cm) as the cathode, in a solution containing 0.5wt% NaF and 0.5M Na 2 SO 4 In aqueous solution, anodized at a constant oxidation voltage of 20V for 5h. Rinse the prepared sample with deionized water, air-dry, heat up to 500°C at 2°C / min in an air atmosphere, then anneal at a constant temperature for 2 hours, and then cool at a rate of 30°C / min to obtain TiO 2 Nanotube array electrodes.

[0045] 2) Prepare 0.1M Ni(NO 3 ) 2 solution, the TiO 2 The nanotube array electrode was immersed in it for 20min and sonicated. Then with the TiO 2 The nanotube array electrode is the cathode, the platinum sheet is the anode, 0.1M Na 2 SO 4 As electrolyte, constant voltage 8V, electrolyte temperature 85°C, electrodeposition for 20min. Turn off the p...

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Abstract

The invention discloses a preparation method of a metal oxide modified TiO2 nanometer tube array electrode, which comprises the following steps that: (1) a titanium sheet is used as a base plate, and a highly ordered TiO2 nanometer tube array is prepared by an anodic oxidation method in fluorine-containing electrolyte; (2) the TiO2 nanometer tube array is put into corresponding metal salt solution for ultrasonic treatment, and a metal deposition TiO2 nanometer tube electrode is prepared by the cathode electrolytic deposition; and (3) the TiO2 nanometer tube electrode with metal particles deposited on the surface is used as an anode, and a metal oxide/TiO2 nanometer tube electrode is prepared through the anodic oxidation of lye solution. The invention also discloses the metal oxide modified TiO2 nanometer tube array electrode prepared by the preparation method, and the metal oxide/TiO2 nanometer tube array electrode shows good photoelectrocatalysis activity and visible light response characteristic under the sunlight irradiation and can be used in the fields of photoelectrocatalysis environmental pollutant degradation, photoelectrocatalysis synthesis and hydrogen production through water photolysis.

Description

technical field [0001] The invention relates to an electrode material and a preparation process, in particular to a metal oxide / TiO with visible light catalytic activity and photoelectric catalytic properties 2 Nanoarray electrode and its preparation method. Background technique [0002] With the development of the economy, the global energy consumption is increasing rapidly. The energy and environmental crisis has become a major challenge facing mankind, and the rational development and utilization of clean energy has become an inevitable trend. Sunlight is the most typical natural energy, and solar energy utilization is an important part of new energy development and energy regeneration. At present, sunlight is mainly used in two fields of photothermal conversion and photoelectric conversion, including photovoltaic power generation and photochemistry. [0003] Titanium dioxide nanotube arrays (TiO 2 -NTs) are nanostructured semiconductor oxides with strong photocatalyt...

Claims

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Application Information

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IPC IPC(8): C25D11/26C25D11/34C25D5/00
Inventor 丛燕青伏芳霞王齐张轶
Owner ZHEJIANG GONGSHANG UNIVERSITY
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