Enhanced photocatalytic reduction of Cr(VI) by ZnO-TiO 2-CNTs composites synthesized via microwave-assisted reaction

Xinjuan Liu; Likun Pan; Tian Lv; Zhuo Sun; Changqing Sun

doi:10.1016/j.molcata.2012.07.019

Enhanced photocatalytic reduction of Cr(VI) by ZnO-TiO ₂-CNTs composites synthesized via microwave-assisted reaction

Xinjuan Liu, Likun Pan^*, Tian Lv, Zhuo Sun, Changqing Sun

^*Corresponding author for this work

School of Physics and Electronic Science

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

ZnO-TiO ₂-carbon nanotubes (CNTs) composites are successfully synthesized using microwave-assisted reaction of ZnO precursor in TiO ₂ and CNTs suspension using a microwave synthesis system and they are used as photocatalysts for photocatalytic reduction of Cr(VI). The results show that the CNTs addition could enhance the photocatalytic performance of ZnO-TiO ₂ composites. The ZnO-TiO ₂ composites achieve a maximum reduction rate of 90% at 240 min under UV light irradiation, much higher than those for the pure ZnO (58%) and the ZnO-TiO ₂ (69%). The improvement is ascribed to the increased light absorption intensity and range as well as the reduction of electron-hole pair recombination with the introduction of CNTs.

Original language	English
Pages (from-to)	417-422
Number of pages	6
Journal	Journal of Molecular Catalysis A: Chemical
Volume	363-364
DOIs	https://doi.org/10.1016/j.molcata.2012.07.019
State	Published - Nov 2012

Keywords

Microwave-assisted reaction
Photocatalysis
ZnO-TiO -carbon nanotubes

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10.1016/j.molcata.2012.07.019

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@article{ecc7c47e22e742f6a9f76413d8f6710e,

title = "Enhanced photocatalytic reduction of Cr(VI) by ZnO-TiO 2-CNTs composites synthesized via microwave-assisted reaction",

abstract = "ZnO-TiO 2-carbon nanotubes (CNTs) composites are successfully synthesized using microwave-assisted reaction of ZnO precursor in TiO 2 and CNTs suspension using a microwave synthesis system and they are used as photocatalysts for photocatalytic reduction of Cr(VI). The results show that the CNTs addition could enhance the photocatalytic performance of ZnO-TiO 2 composites. The ZnO-TiO 2 composites achieve a maximum reduction rate of 90\% at 240 min under UV light irradiation, much higher than those for the pure ZnO (58\%) and the ZnO-TiO 2 (69\%). The improvement is ascribed to the increased light absorption intensity and range as well as the reduction of electron-hole pair recombination with the introduction of CNTs.",

keywords = "Microwave-assisted reaction, Photocatalysis, ZnO-TiO -carbon nanotubes",

author = "Xinjuan Liu and Likun Pan and Tian Lv and Zhuo Sun and Changqing Sun",

year = "2012",

month = nov,

doi = "10.1016/j.molcata.2012.07.019",

language = "英语",

volume = "363-364",

pages = "417--422",

journal = "Journal of Molecular Catalysis A: Chemical",

issn = "1381-1169",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Enhanced photocatalytic reduction of Cr(VI) by ZnO-TiO 2-CNTs composites synthesized via microwave-assisted reaction

AU - Liu, Xinjuan

AU - Pan, Likun

AU - Lv, Tian

AU - Sun, Zhuo

AU - Sun, Changqing

PY - 2012/11

Y1 - 2012/11

N2 - ZnO-TiO 2-carbon nanotubes (CNTs) composites are successfully synthesized using microwave-assisted reaction of ZnO precursor in TiO 2 and CNTs suspension using a microwave synthesis system and they are used as photocatalysts for photocatalytic reduction of Cr(VI). The results show that the CNTs addition could enhance the photocatalytic performance of ZnO-TiO 2 composites. The ZnO-TiO 2 composites achieve a maximum reduction rate of 90% at 240 min under UV light irradiation, much higher than those for the pure ZnO (58%) and the ZnO-TiO 2 (69%). The improvement is ascribed to the increased light absorption intensity and range as well as the reduction of electron-hole pair recombination with the introduction of CNTs.

AB - ZnO-TiO 2-carbon nanotubes (CNTs) composites are successfully synthesized using microwave-assisted reaction of ZnO precursor in TiO 2 and CNTs suspension using a microwave synthesis system and they are used as photocatalysts for photocatalytic reduction of Cr(VI). The results show that the CNTs addition could enhance the photocatalytic performance of ZnO-TiO 2 composites. The ZnO-TiO 2 composites achieve a maximum reduction rate of 90% at 240 min under UV light irradiation, much higher than those for the pure ZnO (58%) and the ZnO-TiO 2 (69%). The improvement is ascribed to the increased light absorption intensity and range as well as the reduction of electron-hole pair recombination with the introduction of CNTs.

KW - Microwave-assisted reaction

KW - Photocatalysis

KW - ZnO-TiO -carbon nanotubes

UR - https://www.scopus.com/pages/publications/84866049148

U2 - 10.1016/j.molcata.2012.07.019

DO - 10.1016/j.molcata.2012.07.019

M3 - 文章

AN - SCOPUS:84866049148

SN - 1381-1169

VL - 363-364

SP - 417

EP - 422

JO - Journal of Molecular Catalysis A: Chemical

JF - Journal of Molecular Catalysis A: Chemical

ER -

Enhanced photocatalytic reduction of Cr(VI) by ZnO-TiO ₂-CNTs composites synthesized via microwave-assisted reaction

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Keywords

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