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Preparation method and application of carbon, boron and nitrogen doped double-tube titania nanotube arrays on titanium substrate by using ionic liquid

A nanotube array and titanium dioxide technology, applied in the direction of surface reaction electrolytic coating, coating, electrolytic coating, etc., can solve the problems of unsatisfactory photocatalytic efficiency, inability to make full use of sunlight, unfavorable catalyst reuse, etc., to achieve good Photoelectric properties, improved photocatalytic and photocatalytic performance, and low cost effects

Inactive Publication Date: 2015-08-05
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its photocatalytic efficiency is still unsatisfactory, mainly due to the fact that TiO 2 The band gap cannot fully utilize sunlight, the quantum efficiency is low, and it is difficult to separate and recycle in actual use, which is not conducive to the reuse of catalysts, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Cut a pure titanium sheet with a titanium content of 98-99.9% into 1cm×1cm, first polish and polish the surface of the pure titanium sheet with sandpaper until there is no obvious scratch, then ultrasonically clean it with acetone, ethanol and distilled water for 10 minutes, and dry it. spare.

[0016] (2) Firstly prepare the H containing 2 O 10vol% ethylene glycol organic solvent, stir and mix evenly, then use ethylene glycol organic solvent as basic electrolyte, the massfraction of preparation 1-butyl-3 methylimidazole tetrafluoroborate is 0.2wt% ethylene glycol Diol organic electrolyte, namely 0.2wt% 1-butyl-3-methylimidazolium tetrafluoroborate-10vol% H 2 For the electrolyte of O-ethylene glycol, the pretreated pure titanium sheet is used as the anode, and the platinum sheet is used as the cathode. On the DC stabilized power supply, adjust the anode voltage to 60V, ultrasonically disperse the electrolyte during the entire anodic oxidation reaction process, the...

Embodiment 2

[0019] (1) Cut the pure titanium sheet into 4cm×5cm, first polish the surface of the pure titanium sheet with sandpaper until there is no obvious scratch, then ultrasonically clean it with acetone, ethanol and distilled water for 15min, dry it, and set it aside.

[0020] (2) First prepare the mass fraction of N-ethylpyridine hexafluoroborate as 1.5wt% dimethylsulfoxide organic electrolyte, i.e. 1.5wt% N-ethylpyridine hexafluoroborate-dimethylsulfoxide Stir and mix the electrolyte evenly, use the pretreated pure titanium sheet as the anode, and the graphite rod as the cathode, adjust the electrolysis distance to 3cm, put the two electrodes into the electrolyte, adjust the anode voltage to 10V, and the ultrasonic power to 200W, After oxidizing for 180 minutes, the reaction was terminated.

[0021] (3) Take out the anodized titanium sheet, wash it with distilled water to remove residual ions, dry it at room temperature, and place the sample in a muffle furnace for calcination at ...

Embodiment 3

[0023] (1) Cut the pure titanium sheet into 10cm×10cm, first polish the surface of the pure titanium sheet with sandpaper until there is no obvious scratch, then ultrasonically clean it with acetone, ethanol and distilled water for 20 minutes, dry it, and set it aside.

[0024] (2) Firstly prepare the H containing 2 The glycerol organic solvent of 050vol%, stirs and mixes, then with glycerol organic solvent as base electrolytic solution, the massfraction of preparation tetrabutylphosphine tetrafluoroborate is the glycerol organic electrolytic solution of 3wt%, That is, 3wt% tetrabutylphosphine tetrafluoroborate-50vol% H 2 O-glycerol, use the pretreated pure titanium sheet as the anode, and the platinum sheet as the cathode, adjust the electrolysis distance to 6cm, put the two electrodes into the electrolyte, adjust the anode voltage to 100V, and the ultrasonic power to 800W, and oxidize for 10min , the reaction terminates.

[0025] (3) Take out the anodized titanium sheet, w...

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Abstract

The invention discloses a method for preparing a carbon boron nitrogen doped double-tube titania nanotube array from ionic liquid on a titanium base, which comprises the steps that ionic liquid and organic solution are used as electrolyte, a titanium sheet is used as an anode, a platinum sheet is used as a cathode, the titanium sheet is anodized in ultrasonic bath, a carbon boron nitrogen doped double-tube TiO nanotube array is synthesized on the titanium base by self-assembly, and the sample is calcined in a nitrogen atmosphere tube furnace after washed and dried. The invention further extends light response range and enhances response capability to visible light through three-element doping, saves energy and has the advantages of simplicity in operation, adjustable design and composite structure, and high practical application value.

Description

technical field [0001] The invention belongs to the technical field of new materials and their preparation, and relates to a highly ordered carbon-boron-nitrogen-doped double-tube TiO prepared in situ by using ionic liquid on a titanium substrate. 2 Methods and applications of nanotube arrays. Background technique [0002] TiO 2 As a cheap and chemically stable photocatalyst, it has always been a research hotspot of domestic and foreign scholars in the removal of organic pollutants, especially refractory persistent organic pollutants. However, its photocatalytic efficiency is still unsatisfactory, mainly due to the fact that TiO 2 The bandgap band cannot make full use of sunlight, the quantum efficiency is low, and it is difficult to separate and recycle in actual use, which is not conducive to the reuse of catalysts. with TiO 2 Nanopowder compared to TiO 2 The nanotube array structure has better photosensitive, gas sensitive and photoelectric properties, fundamentally ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26
Inventor 张延宗熊晓燕刘燕丁小惠周帷杨刚沈飞张小洪邓仕槐蔺丽丽肖鸿彭宏漆辉李远伟李黎
Owner SICHUAN AGRI UNIV
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