Mechanism of 2,4-dinitrophenol photocatalytic degradation by ζ-Bi2O3/Bi2MoO6 composites under solar and visible light irradiation

Jun Ma; Long Zhu Zhang; Yue Hua Wang; Si Liang Lei; Xu Biao Luo; Su Hua Chen; Gui Sheng Zeng; Jian Ping Zou; Sheng Lian Luo; Chak Tong Au

doi:10.1016/j.cej.2014.04.085

Mechanism of 2,4-dinitrophenol photocatalytic degradation by ζ-Bi₂O₃/Bi₂MoO₆ composites under solar and visible light irradiation

Jun Ma, Long Zhu Zhang, Yue Hua Wang^*, Si Liang Lei, Xu Biao Luo, Su Hua Chen, Gui Sheng Zeng, Jian Ping Zou, Sheng Lian Luo, Chak Tong Au

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

73 Citations (Scopus)

Abstract

The ζ-Bi₂O₃/Bi₂MoO₆ composites were synthesized by a one-pot template-free hydrothermal method, and were systematically characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, UV-vis diffuse reflectance spectroscopy, and Raman spectroscopy. Based on the results of 2,4-dinitrophenol (2,4-DNP) degradation under simulated solar or visible light irradiation over the as-prepared materials, it is found that photocatalytic efficiency is closely related to the compositions of the materials, and the 20%ζ-Bi₂O₃/Bi₂MoO₆ catalyst performs the best. With the addition of H₂O₂ (5.0mmol/L), there is marked improvement of photocatalytic activity. Related mechanisms for the photocatalytic degradation of 2,4-DNP and photocatalytic enhancement of the ζ-Bi₂O₃/Bi₂MoO₆ composites have been put forward.

Original language	English
Pages (from-to)	371-380
Number of pages	10
Journal	Chemical Engineering Journal
Volume	251
DOIs	https://doi.org/10.1016/j.cej.2014.04.085
Publication status	Published - 1 Sept 2014

Scopus Subject Areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

User-Defined Keywords

Degradation
Persistent organic pollutants
Photocatalyst
Radicals

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10.1016/j.cej.2014.04.085

Cite this

@article{faf9520684d94457a4177828a354575d,

title = "Mechanism of 2,4-dinitrophenol photocatalytic degradation by ζ-Bi2O3/Bi2MoO6 composites under solar and visible light irradiation",

abstract = "The ζ-Bi2O3/Bi2MoO6 composites were synthesized by a one-pot template-free hydrothermal method, and were systematically characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, UV-vis diffuse reflectance spectroscopy, and Raman spectroscopy. Based on the results of 2,4-dinitrophenol (2,4-DNP) degradation under simulated solar or visible light irradiation over the as-prepared materials, it is found that photocatalytic efficiency is closely related to the compositions of the materials, and the 20%ζ-Bi2O3/Bi2MoO6 catalyst performs the best. With the addition of H2O2 (5.0mmol/L), there is marked improvement of photocatalytic activity. Related mechanisms for the photocatalytic degradation of 2,4-DNP and photocatalytic enhancement of the ζ-Bi2O3/Bi2MoO6 composites have been put forward.",

keywords = "Degradation, Persistent organic pollutants, Photocatalyst, Radicals",

author = "Jun Ma and Zhang, {Long Zhu} and Wang, {Yue Hua} and Lei, {Si Liang} and Luo, {Xu Biao} and Chen, {Su Hua} and Zeng, {Gui Sheng} and Zou, {Jian Ping} and Luo, {Sheng Lian} and Au, {Chak Tong}",

note = "Funding Information: We gratefully acknowledge the financial support of the NSF of China ( 51238002 , 51272099 , 51378246 , and 20801026 ), the NSF of Jiangxi Province ( KJLD12002 , 20133ACB21001 , 20122BCB23013 , and 20114BAB203005 ), the Aviation Science Foundation of China ( 2008ZF56012 ), and Foundation of State Key Laboratory of Structural Chemistry ( 20100015 ). ",

year = "2014",

month = sep,

day = "1",

doi = "10.1016/j.cej.2014.04.085",

language = "English",

volume = "251",

pages = "371--380",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier",

}

TY - JOUR

T1 - Mechanism of 2,4-dinitrophenol photocatalytic degradation by ζ-Bi2O3/Bi2MoO6 composites under solar and visible light irradiation

AU - Ma, Jun

AU - Zhang, Long Zhu

AU - Wang, Yue Hua

AU - Lei, Si Liang

AU - Luo, Xu Biao

AU - Chen, Su Hua

AU - Zeng, Gui Sheng

AU - Zou, Jian Ping

AU - Luo, Sheng Lian

AU - Au, Chak Tong

N1 - Funding Information: We gratefully acknowledge the financial support of the NSF of China ( 51238002 , 51272099 , 51378246 , and 20801026 ), the NSF of Jiangxi Province ( KJLD12002 , 20133ACB21001 , 20122BCB23013 , and 20114BAB203005 ), the Aviation Science Foundation of China ( 2008ZF56012 ), and Foundation of State Key Laboratory of Structural Chemistry ( 20100015 ).

PY - 2014/9/1

Y1 - 2014/9/1

N2 - The ζ-Bi2O3/Bi2MoO6 composites were synthesized by a one-pot template-free hydrothermal method, and were systematically characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, UV-vis diffuse reflectance spectroscopy, and Raman spectroscopy. Based on the results of 2,4-dinitrophenol (2,4-DNP) degradation under simulated solar or visible light irradiation over the as-prepared materials, it is found that photocatalytic efficiency is closely related to the compositions of the materials, and the 20%ζ-Bi2O3/Bi2MoO6 catalyst performs the best. With the addition of H2O2 (5.0mmol/L), there is marked improvement of photocatalytic activity. Related mechanisms for the photocatalytic degradation of 2,4-DNP and photocatalytic enhancement of the ζ-Bi2O3/Bi2MoO6 composites have been put forward.

AB - The ζ-Bi2O3/Bi2MoO6 composites were synthesized by a one-pot template-free hydrothermal method, and were systematically characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, UV-vis diffuse reflectance spectroscopy, and Raman spectroscopy. Based on the results of 2,4-dinitrophenol (2,4-DNP) degradation under simulated solar or visible light irradiation over the as-prepared materials, it is found that photocatalytic efficiency is closely related to the compositions of the materials, and the 20%ζ-Bi2O3/Bi2MoO6 catalyst performs the best. With the addition of H2O2 (5.0mmol/L), there is marked improvement of photocatalytic activity. Related mechanisms for the photocatalytic degradation of 2,4-DNP and photocatalytic enhancement of the ζ-Bi2O3/Bi2MoO6 composites have been put forward.

KW - Degradation

KW - Persistent organic pollutants

KW - Photocatalyst

KW - Radicals

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DO - 10.1016/j.cej.2014.04.085

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