Chinese Journal of Catalysis ›› 2022, Vol. 43 ›› Issue (3): 771-781.DOI: 10.1016/S1872-2067(21)63843-3
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Yingnan Zhaoa,b,†, Xing Qina,†, Xinyu Zhaob, Xin Wangb, Huaqiao Tana,b,*(), Huiying Sunb, Gang Yanc,&(
), Haiwei Lid, Wingkei Hoa,#(
), Shun-cheng Leed
Received:
2021-03-15
Revised:
2021-03-15
Online:
2022-03-18
Published:
2022-02-18
Contact:
Huaqiao Tan, Gang Yan, Wingkei Ho
About author:
Wing Kei HO obtained his BS and PhD in the Chinese University of Hong Kong. He works as a postdoctoral fellow in the Department of Civil & Environmental Engineering, the Hong Kong Polytechnic University and the Department of Mechanical & Materials Engineering, the University of Western Ontario, Canada. He is currently a professor at the Education University of Hong Kong and an associate head of SES. He is also an adjunct professor of Xi'an Jiaotong University, P.R. China and Institute of Earth Environment, Chinese Academy of Sciences, P.R. China. His primary research interest is heterogeneous catalysis and photocatalysis for energy conversion and environmental remediation. He Joined the editorial board of Chin. J. Catal. In 2020.† These authors contributed equally.
Supported by:
Yingnan Zhao, Xing Qin, Xinyu Zhao, Xin Wang, Huaqiao Tan, Huiying Sun, Gang Yan, Haiwei Li, Wingkei Ho, Shun-cheng Lee. Polyoxometalates-doped Bi2O3-x/Bi photocatalyst for highly efficient visible-light photodegradation of tetrabromobisphenol A and removal of NO[J]. Chinese Journal of Catalysis, 2022, 43(3): 771-781.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(21)63843-3
Fig. 3. PBOB-18 sample. (a) TEM image; (b) HRTEM image; SEM-EDX elemental mapping images of elemental Bi (c), O (d), P (e) and W (f); (g) EDX element analysis.
Fig. 5. Transient photocurrent responses under visible light (λ ≥ 420 nm) (a), electrochemical impedance spectroscopy plots (b), time-resolved fluorescence lifetime spectra (c), and PL emission spectra (d) (λex = 380 nm) of Bi2O3, PBO, BOB-18 and PBOB-18 samples.
Fig. 6. (a) Photocatalytic activities of Bi2O3, PBO, BOB-18 and PBOB-n on TBBPA photodegradation under visible-light irradiation (λ ≥ 420 nm); (b) Pseudo-first-order kinetic constant plot; (c) Recycle experiments; (d) Free-radical trapping experiments; (e) The possible degradation mechanism diagram of PBOB-18 on TBBPA photodegradation.
Fig. 7. NO removal efficiency (a) and the corresponding change in NO2 concentration (b) tested over Bi2O3, PBO, BOB-18 and PBOB-18 under 0.16 W m-2 LED light irradiation; Free-radical trapping experiments (c) and recycle experiments (d) of PBOB-18 on NO removal.
Fig. 8. UV-vis diffuse reflectance spectroscopy (a), band gap energies transformed by Kubelka-Munk function (b), and Mott-Schottky plots (c) of Bi2O3, PBO and PBOB-18 samples; (d) The proposed photocatalytic mechanism of PBOB-18.
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