Method for preparing carbon boron nitrogen doped double-tube TiO2 nanotube array from ionic liquid on titanium base and application thereof

A technology of nanotube array and ionic liquid, which is applied in the field of new materials and its preparation, can solve the problems of unsatisfactory photocatalytic efficiency, inability to fully utilize sunlight, unfavorable catalyst reuse, etc., achieve good photoelectric characteristics, improve photocatalytic and photocatalytic performance, the effect of low cost

Inactive Publication Date: 2012-10-03
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,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0014] Example 1

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

[0016] (2) First prepare H 2 O 10vol% ethylene glycol organic solvent, stir and mix well, and then use ethylene glycol organic solvent as the basic electrolyte to prepare 1-butyl-3methylimidazole tetrafluoroborate with a mass fraction of 0.2wt% Diol organic electrolyte, ie 0.2wt% 1-butyl-3-methylimidazole tetrafluoroborate -10vol% H 2 O-ethylene glycol electrolyte, use the pretreated pure titanium sheet as the anode, and the platinum sheet as the cathode. Adjust the electrolysis distance to 1cm. Put the two electrodes into the electrolyte and use the copper wire as the wire to connect the two electrodes. On the DC stabilized power supply, adjust the anode voltage ...

Example Embodiment

[0018] Example 2

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

[0020] (2) First, prepare a dimethyl sulfoxide organic electrolyte with a mass fraction of N-ethylpyridine hexafluoroborate of 1.5 wt%, that is, 1.5 wt% of N-ethylpyridine hexafluoroborate-dimethyl sulfoxide Stir and mix 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 in the electrolyte, adjust the anode voltage to 10V, and the ultrasonic power to 200W. The reaction is terminated after oxidation for 180 minutes.

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

Example Embodiment

[0022] Example 3

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

[0024] (2) First prepare H 2 O 50vol% glycerol organic solvent, stir and mix well, and then use the glycerol organic solvent as the basic electrolyte to prepare a 3wt% glycerol organic electrolyte with a mass fraction of tetrabutylphosphine tetrafluoroborate. Namely 3wt% tetrabutylphosphine tetrafluoroborate-50vol%H 2 O-Glycerol, the pretreated pure titanium sheet is used as the anode, the platinum sheet is used as the cathode, the electrolysis distance is adjusted to 6cm, the two electrodes are put into the electrolyte, the anode voltage is adjusted to 100V, the ultrasonic power is 800W, and the oxidation is 10min , The reaction is terminated.

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

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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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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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