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Preparation method and application of Li-C-N ternary co-doping titanium dioxide nano material

A technology of titanium dioxide and nanomaterials, which is applied in the field of nanomaterial preparation and catalysis, can solve the problems of metal doping that cannot be uniformly distributed, and achieve the effects of excellent performance, easy industrialization, and uniform distribution

Pending Publication Date: 2019-09-24
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods only realize the doping of one or two elements, and there is a problem that the metal doping cannot be uniformly distributed.

Method used

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  • Preparation method and application of Li-C-N ternary co-doping titanium dioxide nano material
  • Preparation method and application of Li-C-N ternary co-doping titanium dioxide nano material
  • Preparation method and application of Li-C-N ternary co-doping titanium dioxide nano material

Examples

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Embodiment 1

[0021] A preparation method of Li, C, N ternary co-doped titania nanomaterials, the steps are as follows:

[0022] (1) Measure 100 mL -1 10mol·L -1 NaOH solution and TiO 2 Mix in a polytetrafluoroethylene reactor, control the temperature at 120 degrees and magnetically stir for 25 hours, naturally cool to room temperature, filter, wash until the pH is neutral, and dry to prepare nanotube TiO 2 .

[0023] (2) Weigh 0.5g of lithium nitrate and 1g of urea and dissolve them in absolute ethanol, then add 5g of nanotube TiO 2 , magnetically stirred and mixed evenly until the absolute ethanol was completely volatilized.

[0024] (3) The mixture obtained in step (2) was placed in a crucible, calcined at 300°C for 2 hours under the protection of an inert gas, and cooled naturally to room temperature to prepare Li, C, N co-doped titania nanomaterials.

[0025] figure 1 For the nanotube TiO prepared in step (1) 2 electron microscope image. It can be seen that the prepared materi...

Embodiment 2

[0028] A preparation method of Li, C, N ternary co-doped titania nanomaterials, the steps are as follows:

[0029] The difference from Example 1 is that the calcination temperature in step (3) is 400 degrees.

Embodiment 3

[0031] A preparation method of Li, C, N ternary co-doped titania nanomaterials, the steps are as follows:

[0032] The difference from Example 1 is that the calcination temperature in step (3) is 500 degrees.

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Abstract

The invention provides a preparation method and application of a Li-C-N ternary co-doping titanium dioxide nano material. The preparation method comprises the following steps that 1, lithium nitrate and urea are dissolved in absolute ethyl alcohol, a nanotube TiO2 is added, and magnetic stirring and mixing are conducted until the absolute ethyl alcohol is completely volatilized to obtain a mixture; 2, the mixture in step 1 is placed in a crucible, and constant-temperature calcination is conducted in inert gas to obtain the ternary co-doping titanium dioxide nano material. According to the preparation method and application, the nanotube TiO2 is adopted as a precursor, through a one-step method, the Li-C-N ternary co-doping titanium dioxide nano material is prepared, the technology is simple, industrialization is easily achieved, more importantly, in the process that the structure and shape of a precursor crystal are changed, ternary co-doping is achieved, doping elements can be evenly distributed in a titanium dioxide substrate, and accordingly the titanium dioxide material with a fine structure and good performance is obtained.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation and catalysis, in particular to a preparation method and application of Li, C and N ternary co-doped titania nanomaterials. Background technique [0002] TiO 2 Belonging to a wide bandgap semiconductor, under ultraviolet light, TiO 2 It can photocatalytically sterilize, effectively degrade harmful gases in the air, and remove trace organic pollutants in water pollution. In order to utilize a large amount of visible light in the solar spectrum, the TiO 2 Doping is a widely reported method [Feng C, Wang Y, Zhang J, Yu L, Li D, Yang J, et al. The effect of infrared light on visible light photocatalytic activity: Anintensive contrast between Pt-doped TiO 2 and N-doped TiO 2 . Appl Catal BEnviron. 2012;113-114:61-71.]. Zhuang Weibin prepared nitrogen-doped TiO with excellent performance by depositing colloids on the copper surface and then electrothermally sintering. 2 Powder [p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/39
Inventor 王岩冯彩霞
Owner HENAN UNIVERSITY