Study on photocatalytic nitrobenzene reduction to aniline over hierarchical flower-like Cu/TiO<sub>2</sub>

SUN Honghua; ZHANG Nianchen; SUN Biao; LI Peng; XU Fengxia; WANG Jinguo

doi:10.12299/jsues.22-0199

Volume 37 Issue 4

Dec. 2023

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Article Navigation > Journal of Shanghai University of Engineering Science > 2023 > 37(4): 343-350

SUN Honghua, ZHANG Nianchen, SUN Biao, LI Peng, XU Fengxia, WANG Jinguo. Study on photocatalytic nitrobenzene reduction to aniline over hierarchical flower-like Cu/TiO2[J]. Journal of Shanghai University of Engineering Science, 2023, 37(4): 343-350. doi: 10.12299/jsues.22-0199

Citation:

SUN Honghua, ZHANG Nianchen, SUN Biao, LI Peng, XU Fengxia, WANG Jinguo. Study on photocatalytic nitrobenzene reduction to aniline over hierarchical flower-like Cu/TiO₂[J]. Journal of Shanghai University of Engineering Science, 2023, 37(4): 343-350. doi: 10.12299/jsues.22-0199

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Study on photocatalytic nitrobenzene reduction to aniline over hierarchical flower-like Cu/TiO₂

doi: 10.12299/jsues.22-0199

School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

Received Date: 2022-07-03
Publish Date: 2023-12-30

Abstract

Abstract

A series of metal Cu-modified hierarchical flower-like TiO₂ catalysts (X% Cu/TiO₂) was prepared by using an alcoholysis solvothermal method, and their photocatalytic performance were evaluated by using visible-light photocatalytic reduction of nitrobenzene to aniline as a model reaction. The results show that 3.3% Cu/TiO₂ photocatalyst exhibits excellent catalytic activity, achieving 83% nitrobenzene conversion under visible-light irradiation for 3.0 h. There are two main attributions : firstly, the hierarchical structure enlarged the catalyst’s surface area and thus, improved the adsorption and diffusion of nitrobenzene and its contact efficiency with catalyst; secondly, the introduction of metal Cu reduced the catalyst’ energy band and enhanced the separation ability of photoelectron-hole, and thus enhanced the photocatalytic activity. In addition, 3.3% Cu/TiO₂ also exhibits good stability and shows good potential in practical applications.
- photocatalysis,
- TiO₂,
- hierarchical structure,
- nitrobenzene reduction,
- metal modification

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References(23)

References

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