Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/151560
Title: Construction of hole-transported MoO₃₋ₓ coupled with CdS nanospheres for boosting photocatalytic performance via oxygen-defects-mediated Z-scheme charge transfer
Authors: Wu, Yan
Wang, Hou
Tu, Wenguang
Wu, Shuyang
Chew, Jia Wei
Keywords: Engineering::Chemical engineering
Issue Date: 2019
Source: Wu, Y., Wang, H., Tu, W., Wu, S. & Chew, J. W. (2019). Construction of hole-transported MoO₃₋ₓ coupled with CdS nanospheres for boosting photocatalytic performance via oxygen-defects-mediated Z-scheme charge transfer. Applied Organometallic Chemistry, 33(4), e4780-. https://dx.doi.org/10.1002/aoc.4780
Project: SGP-PROG3-019
2015-T1-001-023
RG7/15
MOE2014-T2-2-074
ARC16/15
Journal: Applied Organometallic Chemistry
Abstract: The establishment of Z-scheme charge transfer between semiconductors is an effective method to improve the performance of hybridized semiconductor photocatalysts. Herein, the novel photocatalysts consisting of MoO₃₋ₓ and varying amounts of cadmium sulfide (CdS) nanospheres were successfully prepared via the one-pot hydrothermal method in the presence of polyvinylpyrrolidone (PVP). It is indicated that the PVP not only served as the reducing agent for the formation of oxygen defects in MoO₃₋ₓ, but also the cross-linking agent for the coupling between MoO₃₋ₓ and CdS. The CdS/MoO₃₋ₓ composite allowed for higher visible-light photocatalytic performance for enhanced removal of methylene blue and tetracycline with an efficiency of 97.6% and 85.5%, respectively. The improved performance of the CdS/MoO₃₋ₓ composite was found to be mainly attributable to the remarkable charge carrier separation and transfer between CdS and MoO₃₋ₓ based on the favorable hole-transporting nature and oxygen deficiencies of MoO₃₋ₓ. In addition, the hole-oxidized photocorrosion of CdS was efficiently suppressed due to the presence of hole-attractive MoO₃₋ₓ. At the solid interface, an oxygen-defects-mediated Z-scheme charge carrier transfer pathway was proposed as the underlying mechanism for the superior photocatalytic reaction.
URI: https://hdl.handle.net/10356/151560
ISSN: 0268-2605
DOI: 10.1002/aoc.4780
Rights: © 2019 John Wiley & Sons, Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

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