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Visible-light catalyst of C60 implanted into mesoporous CdS/TiO2 duct and preparation method of catalyst

A catalyst, visible light technology, used in physical/chemical process catalysts, chemical instruments and methods, hydrogen production, etc., to achieve the effect of promoting the photocatalytic process, avoiding recombination, and excellent conduction of electrons

Inactive Publication Date: 2014-04-02
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on combining it with photocatalysts to analyze its modification effect on photocatalysts.

Method used

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  • Visible-light catalyst of C60 implanted into mesoporous CdS/TiO2 duct and preparation method of catalyst
  • Visible-light catalyst of C60 implanted into mesoporous CdS/TiO2 duct and preparation method of catalyst
  • Visible-light catalyst of C60 implanted into mesoporous CdS/TiO2 duct and preparation method of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] At room temperature, take 1.5g of F127 and add it to 19ml of ethanol solution, stir evenly to fully dissolve, then add 0.21g of Cd(NO 3 ) 2 4H 2 O and 1.5ml prepared C60 toluene solution (200mg C60 dissolved in 100ml toluene), stir well; then add 0.015mol titanium tetrachloride solution dropwise to the solution, continue stirring for 0.5h (C60:TiO 2 =0.25wt.%); the solution was transferred to a petri dish and dried at 40°C for four days; then the baked dish was fired at 400°C to obtain CdO with ordered mesoporous structure modified by C60 quantum dots / TiO 2 ; Get 0.3g roasted sample and add to 50ml0.2mol / L Na 2 S solution, stirred at room temperature for 6h, centrifuged, washed and dried to obtain the C60 quantum dot modified CdS / TiO we need 2 catalyst of light. The sample is named 0.25wt.%C60-CdS / TiO 2 .

Embodiment 2

[0032] At room temperature, take 1.5g of F127 and add it to 19ml of ethanol solution, stir evenly to fully dissolve, then add 0.21g of Cd(NO 3 ) 2 4H 2 O and 3.0ml prepared C60 toluene solution (200mg C60 dissolved in 100ml toluene), stir well; then add dropwise 0.015mol titanium tetrachloride solution to the solution, continue stirring for 0.5h (C60:TiO 2 =0.5wt.%); the solution was transferred to a petri dish and dried at 40°C for four days; then the baked dish was baked at 400°C to obtain CdO with ordered mesoporous structure modified by C60 quantum dots / TiO 2; Get 0.3g roasted sample and add to 50ml0.2mol / L Na 2 S solution, stirred at room temperature for 6h, centrifuged, washed and dried to obtain the C60 quantum dot modified CdS / TiO we need 2 catalyst of light. The sample is named 0.5wt.%C60-CdS / TiO 2 .

Embodiment 3

[0034] At room temperature, take 1.5g of F127 and add it to 19ml of ethanol solution, stir evenly to fully dissolve, then add 0.21g of Cd(NO 3 ) 2 4H 2 O and 6.0ml prepared C60 toluene solution (200mg C60 dissolved in 100ml toluene), stir evenly; then add 0.015mol titanium tetrachloride solution dropwise to the solution, continue stirring for 0.5h (C60:TiO 2 =1.0wt.%); the solution was transferred to a petri dish and dried at 40°C for four days; then the baked dish was baked at 400°C to obtain CdO with ordered mesoporous structure modified by C60 quantum dots / TiO 2 ; Get 0.3g roasted sample and add to 50ml0.2mol / L Na 2 S solution, stirred at room temperature for 6h, centrifuged, washed and dried to obtain the C60 quantum dot modified CdS / TiO we need 2 catalyst of light. The sample is named 1.0wt.%C60-CdS / TiO 2 .

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Abstract

The invention discloses a visible-light catalyst of C60 implanted into a mesoporous CdS / TiO2 duct and a preparation method of the catalyst. The method concretely comprises the following steps: firstly, implanting a C60 quantum dot into a CdS / TiO2 duct of an ordered mesoporous structure by adopting an evaporation induced self-assembly method, and then synthetizing the C60 quantum dot-modified CdS / TiO2 light catalyst with the ordered mesoporous structure by using an ion exchange method, wherein the C60 is embedded into a hole wall skeleton of the mesoporous TiO2. The visible-light catalyst has the significant characteristics that 1) the visible-light catalyst has an excellent electron conduction role of C60, photogenerated electrons and cavities are prevented from being compounded again, and the photocatalytic process is facilitated; 2) the C60 is introduced to a semiconductor surface and expected to replace precious metal catalysts such as Pt, so that photocatalytic active points are increased; 3) the preparation method of the composite material is simple. The catalyst has the characteristics of visible-light response and the like, so that the visible-light catalyst has certain application value in the aspects such as photocatalytic water hydrogen production, a solar cell and degradation of environmental pollutants.

Description

technical field [0001] The invention belongs to the technical field of photocatalysts, and relates to a novel visible light catalyst and a preparation method thereof, specifically C60 plant synthesized by solvent evaporation-induced self-assembly (EISA) and ion-exchange (Ion-exchange) methods. Mesoporous CdS / TiO 2 Photocatalyst in the channel. Background technique [0002] Hydrogen energy has a wide range of sources, and is considered by scholars to be the most potential alternative energy source in the 21st century, which can solve the current energy crisis facing human society. Among the many hydrogen production methods, the hydrogen production technology using solar heterogeneous photocatalytic water splitting has attracted more and more attention because of its direct utilization of solar energy and simple system. TiO 2 Nano-based materials have become widely researched and applied photocatalytic materials due to their high efficiency, non-toxicity, low cost and easy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J35/10C01B3/04
CPCY02E60/364Y02E60/36
Inventor 李贵生徐鹏鹏王文超崔莹莹李和兴
Owner SHANGHAI NORMAL UNIVERSITY
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