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CuO/TiO2 nanotube array and preparation method and application method thereof

A technology of nanotube array and application method, which is applied in the field of novel functional nanomaterials, can solve the problems of expensive sensor preparation, low sensitivity, tedious and time-consuming, etc., and achieve increased electron transmission capacity, adjustable aperture, strong anti-interference ability and The effect of stability

Inactive Publication Date: 2011-11-23
HUNAN UNIV
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Problems solved by technology

The method of preparing sensors by using titanium dioxide nanotube arrays as substrates to modify different materials has been reported, but there are some problems, for example, due to the high price of noble metals, the preparation of sensors is relatively expensive, the detection limit is not very low and the sensitivity is relatively small, etc.
The application of nanostructured copper oxide in detection has been widely studied in recent years, but the method of preparing nano-copper oxide is usually cumbersome and time-consuming. At the same time, the copper oxide is fixed on the substrate and its nanostructure must be maintained when preparing the sensor. limit its application

Method used

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  • CuO/TiO2 nanotube array and preparation method and application method thereof
  • CuO/TiO2 nanotube array and preparation method and application method thereof
  • CuO/TiO2 nanotube array and preparation method and application method thereof

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Embodiment 1

[0033] (1) Grinding the surface of the base material, cleaning it for later use;

[0034] (2) Preparation of inorganic electrolyte: the electrolyte is 0.2-0.6mol / L NaHSO of hydrofluoric acid with a mass percentage of HF of 0.5-3%. 4 The composition of the aqueous solution;

[0035] (3) Under a DC voltage of 10-25V, using pure titanium or titanium alloy as an anode and a platinum sheet as a cathode, electrolytically prepare titanium dioxide nanotubes in an electrolyte;

[0036] (4) Preparation of CuO-modified titania nanotube arrays:

[0037] with CuSO 4 ·5H 2 The aqueous solution of O (0.005mol / L-2mol / L) is the plating solution. In the three-electrode system, the TiO 2 Cu crystals are deposited on the nanotube array, the deposition method is square wave pulse, the on-off ratio is 1:1-1:20; the deposition time is: 10-800s. Then, the Cu / TiO 2 Put the nanotube array into NaOH (0.25mol / L-0.5mol / L), K 2 S 2 o 8(5mmol / L-15mmol / L) and sodium lauryl sulfate (10mmol / L-25mmol / L...

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Abstract

The invention relates to a CuO / TiO2 nanotube array and a preparation method and an application method thereof. The preparation method comprises the following steps of: depositing elementary Cu nanoparticles on a TiO2 nanotube array in a standard three-electrode system by using aqueous solution containing 0.005 to 2mol / L CuSO4.5H2O as plating solution; putting the CuO / TiO2 nanotube array into mixed solution of 0.25 to 0.5mol / L NaOH, 5 to 15mmol / L K2S2O8 and 10 to 25mmol / L sodium lauryl sulfate, and oxidizing; and calcining the modified TiO2 nanotube array under the aerobic condition. The CuO / TiO2 nanomaterial with a novel structure has high specific surface area, a high electron transport rate, and a wide application prospect in the aspects of solar cells, photocatalysts, sensors and the like.

Description

technical field [0001] The invention relates to a novel functional nanomaterial-CuO / TiO 2 Fabrication of nanotube arrays and methods of application thereof. Background technique [0002] Titanium dioxide nanotube arrays prepared by anodic oxidation have excellent characteristics such as large specific surface area, uniform surface morphology, adjustable pore size, and stable chemical properties. Its special nanotube-like structure has become a research hotspot in the field of science in various countries. The method of preparing sensors by modifying different materials with titanium dioxide nanotube arrays as a substrate has been reported, but there are some problems, for example, due to the expensive price of noble metals, the preparation of sensors is relatively expensive, the detection limit is not very low, and the sensitivity is relatively small. The application of nanostructured copper oxide in detection has been widely studied in recent years, but the method of prepa...

Claims

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Application Information

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IPC IPC(8): B81C1/00B81B7/04B82Y40/00G01N27/30
Inventor 罗胜联苏芳刘承斌刘选能
Owner HUNAN UNIV
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