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Method for preparing ZnO nano-rod array through one-step electro-deposition

A nanorod array and electrodeposition technology, applied in chemical instruments and methods, electrolytic inorganic material coating, single crystal growth and other directions, can solve problems such as complex solution preparation, and achieve the effect of simple preparation and low cost

Inactive Publication Date: 2012-09-26
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not require pretreatment of the substrate surface, no need to pass oxygen through the solution, and no need to apply pressure, but the preparation of the solution is still relatively complicated

Method used

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  • Method for preparing ZnO nano-rod array through one-step electro-deposition
  • Method for preparing ZnO nano-rod array through one-step electro-deposition
  • Method for preparing ZnO nano-rod array through one-step electro-deposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Electrochemical deposition process at 0.01 mol / L Zn(NO 3 ) 2 Carried out in aqueous solution, the power source used is a two-electrode system, and the current density is constant at 0.1 mA cm -2 , the temperature was kept constant at 75 °C, and the deposition time was 30 min. The ITO glass substrate is connected to the cathode, and the anode uses a 2.25 cm 2 Platinum sheet, the two electrodes were kept parallel with a distance of 2 cm. After the deposition was completed, all samples were washed repeatedly with deionized water to remove residual solution ions on the samples. Afterwards, the samples were placed in a tubular heat treatment furnace for annealing at 150 °C. Heat treatment is carried out in the surrounding air atmosphere at 1.5 ℃ min -1 The heating rate was raised to the set temperature, kept for 6 h, and then heated at 1.5 °C min -1 Cool quickly to room temperature.

[0019] The color of the ZnO nanorod array is colorless and transparent by visual obs...

Embodiment 2

[0021] Electrochemical deposition process at 0.01 mol / L Zn(NO 3 ) 2 Carried out in aqueous solution, the power source used is a two-electrode system, and the current density is constant at 0.1 mA cm -2 , the temperature was kept constant at 85 °C, and the deposition time was 40 min. The ITO glass substrate is connected to the cathode, and the anode uses a 2.25 cm 2 Platinum sheet, the two electrodes were kept parallel with a distance of 2 cm. After the deposition was completed, all samples were washed repeatedly with deionized water to remove residual solution ions on the samples. Afterwards, the samples were placed in a tubular heat treatment furnace for annealing at 150 °C. Heat treatment is carried out in the surrounding air atmosphere at 1.5 ℃ min -1 The heating rate was raised to the set temperature, kept for 6 h, and then heated at 1.5 °C min -1 Cool quickly to room temperature.

[0022] The color of the ZnO nanorod array is colorless and transparent, and the crys...

Embodiment 3

[0024] Electrochemical deposition process at 0.05 mol / L Zn(NO 3 ) 2 It is carried out in aqueous solution, the power source used is a two-electrode system, and the current density is constant at 1 mA cm -2 , the temperature was kept constant at 95 °C, and the deposition time was 30 min. The ITO glass substrate is connected to the cathode, and the anode uses a 2.25 cm 2 Platinum sheet, the two electrodes were kept parallel with a distance of 2 cm. After the deposition was completed, all samples were washed repeatedly with deionized water to remove residual solution ions on the samples. Afterwards, the samples were placed in a tubular heat treatment furnace for annealing at 200 °C. Heat treatment is carried out in the surrounding air atmosphere at 1.5 ℃ min -1 The heating rate was raised to the set temperature, kept for 6 h, and then heated at 1.5 °C min -1 Cool quickly to room temperature.

[0025] The color of the ZnO nanorod array is colorless and transparent, and the ...

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Abstract

The invention relates to a method for generating a ZnO nano-rod array on transparent conductive glass through direct-current electro-deposition, belonging to the technical field of preparation of a nanometer photoelectric device. The method comprises the following steps of: at first, preparing a Zn(NO3)2 water solution with a certain concentration; secondly, depositing on the conductive glass by using a direct-current electro-deposition method; and finally, carrying out heat treatment on the generated ZnO nano-rod array.. The solution for preparing the ZnO nano-rod array in the method provided by the invention is simple to prepare, and has low cost. Compared with the reported electro-deposition methods, the method is simpler and more convenient, so that the method provided by the invention is more suitable for preparing a large-size and low-cost nanometer device. The ZnO nano-rod array prepared by the method has adjustable diameter, height and density, and can be used for assembling the nanometer devices, such as a nanometer photocatalysis device and a photovoltaic device.

Description

technical field [0001] The invention relates to a method for preparing upright ZnO nanorod arrays on transparent conductive glass. The invention belongs to the technical field of nano photoelectric device preparation. Background technique [0002] Fabrication of large-scale upright ZnO nanorod arrays on transparent conductive glass has attracted great attention in both nanophotocatalytic devices and photovoltaic devices. The technology of preparing ZnO nanorod arrays by liquid phase method is favored because of its high yield, low temperature and wide selection of substrates. However, currently employed liquid-phase methods such as hydrothermal and sonochemical methods require compression-resistant equipment or ultrasonic cavitation, which reduces the controllability of the nanostructure morphology. Electrodeposition can effectively solve the above problems. However, in the current commonly used electrodeposition methods, it is necessary to prepare complex solutions or dep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/06C30B30/02C30B29/62C30B29/16
Inventor 任鑫赵彬
Owner SHANGHAI UNIV
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