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Nanoporous TiO2 film on Ti-Cu alloy surface and its preparation method

A nanoporous and ti-cu technology, applied in the direction of final product manufacturing, sustainable manufacturing/processing, climate sustainability, etc., can solve the problem of small pore size, achieve the effect of increasing porosity, improving performance, and promoting application

Inactive Publication Date: 2012-06-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method can only be used to prepare structures with thin nanoporous layers at this stage, such as figure 1 As shown, it is impossible to prepare multilayer nanoporous TiO with small pore size and uniform distribution of nanopores. 2 structure, therefore, limits the nanoporous TiO 2 Applications in electrocatalysis

Method used

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  • Nanoporous TiO2 film on Ti-Cu alloy surface and its preparation method
  • Nanoporous TiO2 film on Ti-Cu alloy surface and its preparation method
  • Nanoporous TiO2 film on Ti-Cu alloy surface and its preparation method

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Embodiment 1

[0021] Prepare amorphous Ti-Cu alloy strips, the alloy composition of the amorphous Ti-Cu alloy strips is in atomic percentage, the content of Ti is 30%, the content of Cu is 70%, the amorphous Ti - The thickness of the Cu alloy strip is 10 μm, for convenience, a Ti strip with a width of 20 mm and a length of 6 cm is cut 30 Cu 70 Alloy strips, take a clean beaker, put the cut alloy strips into the beaker, and pour an appropriate amount of absolute ethanol into the beaker, as long as the alloy strips are just submerged, put the beaker into the ultrasonic cell pulverizer Medium ultrasonic cleaning 50 times, each cleaning time is about 4s. Take out the beaker and pour absolute ethanol into the waste tank. Then pour ionized water into the beaker, the ionized water submerges the alloy strips, and then put them into an ultrasonic cell pulverizer and perform ultrasonic cleaning for 30 times, each cleaning time is about 4s. To remove residual organic pollutants on the surface of th...

Embodiment 2

[0027] The difference between embodiment 2 and embodiment 1 is that in the pulse dealloying process using Gamry REF600 electrochemical workstation, the parameters are set differently. The parameters are as follows: the initial voltage is 1V, the pulse amplitude is 300mV, and the applied pulse voltage is 0.5s, the time to stop applying voltage is 0.5s, the cycle period is 7200, and the electrode area is 0.8cm 2 . Other parameters adopt default values. Click to confirm. After the end, take out the alloy strip, clear it with distilled water, and dry it in the air. So far in the Ti 30 Cu 70 Nanoporous TiO prepared on the surface of alloy strips 2 film, the thickness of which is 5 μm, and the nanoporosity in the film presents an interpenetrating bicontinuous structure morphology, such as image 3 As shown, the nanopore diameter is 100 nm, and the nanopore distribution is uniform, and the nanoporous structure runs through the surface of the entire amorphous Ti-Cu alloy strip.

Embodiment 3

[0029] The initial voltage is 1V, the pulse amplitude is 400mV, the applied pulse voltage is 0.5s, the stop voltage application time is 1s, the cycle period is 7200, and the electrode area is 0.8cm 2 . Other parameters adopt default values. Click OK to start. After the end, take out the alloy strip, wash it with distilled water, and dry it in the air. So far in the Ti 30 Cu 70 Nanoporous TiO was prepared on the surface of alloy strips 2 A thin film with a thickness of 5 μm. The nanoporous structure in the film presents an interpenetrating bicontinuous structure, the nanopore diameter is 50 nm, and the nanopores are evenly distributed. The nanoporous structure runs through the entire amorphous Ti-Cu alloy the surface of the strip.

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Abstract

The invention discloses a nanoporous TiO2 film on a Ti-Cu alloy surface. With thickness of 5 micrometers, the film has a smooth surface which is not damaged, and the nanopores present an interconnected bicontinuous structure appearance. With an aperture of 50-100nm, the nanopores are in uniform distribution. The preparing method of the film consists of: preparing an amorphous Ti30Cu70 alloy strip; coating the two sides of the strip with silica gel; preparing a 30 mass percent nitric acid solution as an electrolyte solution, utilizing a voltage source meter or an electrochemical workstation to conduct a pulsed dealloying process, with the parameters set as the following: an initial voltage of 1V, a pulse amplitude of 300-400mV, a pulse voltage applying time of 0.5s, a stopped voltage applying time of 0.5-1.0s, a cycle period of 7022-10800 times, and an electrode area of 0.8cm<2>. The preparation method of the invention has the advantages of simple preparation process, low cost, no ''impurity'' introduced during preparation, and no danger, thus being suitable for large area production and application.

Description

technical field [0001] The invention relates to a method for preparing a nanoporous film, in particular to a nanoporous TiO with small pore size and high porosity applied in the field of electrocatalysis 2 The method of film preparation. Background technique [0002] Porous metal materials are a class of functional structural materials with obvious pore characteristics, which are composed of continuous solid phase forming the basic framework of porous materials and pores surrounded by continuous solid phase scaffolds. As an important part of it, nanoporous metal materials refer to porous solid materials with significant surface effects, pore diameters ranging from 0.1 to 100 nm, porosity greater than 40%, and high specific surface areas. [0003] Nanoporous TiO 2 Because of its large specific surface area, high electrical conductivity, thermal conductivity, and stable mechanical, chemical, and electrochemical properties, materials have become commonly used carriers for ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M8/023
CPCY02E60/50Y02P70/50
Inventor 朱胜利邳乐乐陈翠杰杨贤金崔振铎魏强
Owner TIANJIN UNIV
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