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Carbon-doped TiO2 multilevel structural nanomaterial and application thereof

A kind of structural material and nanotechnology, which is applied in the field of clean and sustainable new energy preparation and application, can solve the problems of catalytic property limitation and achieve the effect of improving utilization rate

Active Publication Date: 2018-11-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its catalytic properties are limited

Method used

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  • Carbon-doped TiO2 multilevel structural nanomaterial and application thereof
  • Carbon-doped TiO2 multilevel structural nanomaterial and application thereof
  • Carbon-doped TiO2 multilevel structural nanomaterial and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: This example prepares a carbon-doped TiO 2 The nanoscale hierarchical structure material specifically comprises the following steps:

[0021] (1) Using 10vol% HF solution on Ti 3 AlC 2 Washing is performed to remove surface oxides, followed by centrifugation with deionized water.

[0022] (2) Take 1g of Ti 3 AlC 2 Add 0.1g / mL into 10mL aqueous solution containing 25vol% tetramethylammonium hydroxide (TMAOH), stir for 24h, then dilute the above solution to 300mL with deionized water, shake the diluted mixed solution to achieve the peeling effect , followed by centrifugation at 3500rpm to obtain the supernatant containing MXene;

[0023] (3) Encapsulate the supernatant liquid treated in step 2 in a high-pressure reactor with a polytetrafluoroethylene liner, and conduct a hydrothermal treatment at 160° C. for 8 hours;

[0024] (4) Then take out the precipitate in step 3, centrifuge and wash it three times with deionized water, and vacuum-dry the obtained s...

Embodiment 2

[0028] Example 2: This example prepares a carbon-doped TiO 2 The nanoscale hierarchical structure material specifically comprises the following steps:

[0029] (1) Using 10vol% HF solution on Ti 3 AlC 2 Washing is performed to remove surface oxides, followed by centrifugation with deionized water.

[0030] (2) Take 1g of Ti 3 AlC 2 Add 0.1g / mL into 10mL aqueous solution containing 25vol% tetramethylammonium hydroxide (TMAOH), stir for 24h, then dilute the above solution to 300mL with deionized water, shake the diluted mixed solution to achieve the peeling effect , followed by centrifugation at 3500rpm to obtain the supernatant containing MXene;

[0031](3) Encapsulating the treated supernatant in step 2 in a high-pressure reactor with a polytetrafluoroethylene liner, and subjecting it to hydrothermal treatment at 160° C. for 12 hours;

[0032] (4) Then take out the precipitate in step 3, centrifuge and wash it three times with deionized water, and vacuum-dry the obtained...

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Abstract

The invention discloses a carbon-doped TiO2 multilevel structural nanomaterial and application thereof in photocatalytic water decomposition hydrogen production. According to the carbon-doped TiO2 multilevel structural nanomaterial, MXene, obtained by a method of peeling MAX by normal temperature organic base, is taken as a precursor, and the carbon-doped multilevel structural TiO2 material is obtained by low-temperature hydrothermal treatment. By virtue of doping, the light absorption range of the material is enlarged, and the efficiency of photo-generated carrier separation is enhanced. Forthese two reasons, the catalytic activity of the material is greatly improved, the catalytic efficiency of photocatalytic hydrogen production is improved, and this catalytic effect is mainly derived from the broadened light absorption range and the effective separation of the photo-generated carriers.

Description

technical field [0001] The invention belongs to the field of preparation and application of clean and sustainable new energy sources, in particular to a carbon-doped TiO based on MXene as a raw material 2 Nanoscale hierarchical structure materials and their applications in photocatalytic hydrogen production reactions. Background technique [0002] With the rapid development of the world economy, energy and environmental issues have gradually become one of the urgent issues to be solved. Sunlight is an inexhaustible natural energy source, so effectively converting sunlight into chemical energy has become a top priority. Among them, research on photocatalytic water splitting has attracted much attention. Among many photocatalytic materials, TiO 2 As one of the most potential photocatalytic materials, it has played a great role in the fields of environment, energy, catalysis and so on. especially TiO 2 As one of the earliest photocatalytic materials studied, it has become ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22C01B3/04
CPCC01B3/042B01J27/22C01B2203/0277B01J35/39Y02E60/36
Inventor 崔小强贾广日张雷张海燕
Owner JILIN UNIV
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