Efficient photocatalytic degradation of volatile organic compounds over carbon quantum dots decorated Bi2WO6 under visible light

Yangqing Liu; Changjun Zhu; Jingwen Sun; Yan Ge; Fujiao Song; Guanzhong Wang; Qi Xu

doi:10.1007/s11356-020-12273-y

Efficient photocatalytic degradation of volatile organic compounds over carbon quantum dots decorated Bi₂WO₆ under visible light

Yangqing Liu, Changjun Zhu, Jingwen Sun, Yan Ge, Fujiao Song, Guanzhong Wang, Qi Xu

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

21 Scopus citations

Abstract

A series of CQDs/Bi₂WO₆ (CBW) hybrid materials with different loading amounts of carbon quantum dots (CQDs) were prepared via a facile in situ hydrothermal method. As determined by multiple techniques including XRD, TEM, UV-vis, PL, TPR, and XPS, the CBW possessed expanded visible light response interval, decreased recombination rate of the photogenerated electron hole, and enhanced oxidation ability as compared with the pristine Bi₂WO₆. In addition, with different loading amounts of CQDs, the optical and electronic properties of the corresponding CBW were different. These CBW materials performed superior activities to the pristine Bi₂WO₆ in the photodegradation of VOCs under visible light, among which the CBW-2 demonstrated the best activity of almost complete degradation within only 120 min. Moreover, the CBW-2 exhibited high stability and reusability after five cycles.

Original language	English
Pages (from-to)	25949-25958
Number of pages	10
Journal	Environmental Science and Pollution Research
Volume	28
Issue number	20
DOIs	https://doi.org/10.1007/s11356-020-12273-y
State	Published - 1 May 2021
Externally published	Yes

Keywords

BiWO
CQDs
Photocatalysis
VOCs
Visible light

ASJC Scopus subject areas

Environmental Chemistry
Pollution
Health, Toxicology and Mutagenesis

Access to Document

10.1007/s11356-020-12273-y

Cite this

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title = "Efficient photocatalytic degradation of volatile organic compounds over carbon quantum dots decorated Bi2WO6 under visible light",

abstract = "A series of CQDs/Bi2WO6 (CBW) hybrid materials with different loading amounts of carbon quantum dots (CQDs) were prepared via a facile in situ hydrothermal method. As determined by multiple techniques including XRD, TEM, UV-vis, PL, TPR, and XPS, the CBW possessed expanded visible light response interval, decreased recombination rate of the photogenerated electron hole, and enhanced oxidation ability as compared with the pristine Bi2WO6. In addition, with different loading amounts of CQDs, the optical and electronic properties of the corresponding CBW were different. These CBW materials performed superior activities to the pristine Bi2WO6 in the photodegradation of VOCs under visible light, among which the CBW-2 demonstrated the best activity of almost complete degradation within only 120 min. Moreover, the CBW-2 exhibited high stability and reusability after five cycles.",

keywords = "BiWO, CQDs, Photocatalysis, VOCs, Visible light",

author = "Yangqing Liu and Changjun Zhu and Jingwen Sun and Yan Ge and Fujiao Song and Guanzhong Wang and Qi Xu",

note = "Publisher Copyright: {\textcopyright} 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.",

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T1 - Efficient photocatalytic degradation of volatile organic compounds over carbon quantum dots decorated Bi2WO6 under visible light

AU - Liu, Yangqing

AU - Zhu, Changjun

AU - Sun, Jingwen

AU - Ge, Yan

AU - Song, Fujiao

AU - Wang, Guanzhong

AU - Xu, Qi

PY - 2021/5/1

Y1 - 2021/5/1

N2 - A series of CQDs/Bi2WO6 (CBW) hybrid materials with different loading amounts of carbon quantum dots (CQDs) were prepared via a facile in situ hydrothermal method. As determined by multiple techniques including XRD, TEM, UV-vis, PL, TPR, and XPS, the CBW possessed expanded visible light response interval, decreased recombination rate of the photogenerated electron hole, and enhanced oxidation ability as compared with the pristine Bi2WO6. In addition, with different loading amounts of CQDs, the optical and electronic properties of the corresponding CBW were different. These CBW materials performed superior activities to the pristine Bi2WO6 in the photodegradation of VOCs under visible light, among which the CBW-2 demonstrated the best activity of almost complete degradation within only 120 min. Moreover, the CBW-2 exhibited high stability and reusability after five cycles.

AB - A series of CQDs/Bi2WO6 (CBW) hybrid materials with different loading amounts of carbon quantum dots (CQDs) were prepared via a facile in situ hydrothermal method. As determined by multiple techniques including XRD, TEM, UV-vis, PL, TPR, and XPS, the CBW possessed expanded visible light response interval, decreased recombination rate of the photogenerated electron hole, and enhanced oxidation ability as compared with the pristine Bi2WO6. In addition, with different loading amounts of CQDs, the optical and electronic properties of the corresponding CBW were different. These CBW materials performed superior activities to the pristine Bi2WO6 in the photodegradation of VOCs under visible light, among which the CBW-2 demonstrated the best activity of almost complete degradation within only 120 min. Moreover, the CBW-2 exhibited high stability and reusability after five cycles.

KW - BiWO

KW - CQDs

KW - Photocatalysis

KW - VOCs

KW - Visible light

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