Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/138362
Title: Construction of hierarchical 2D-2D Zn3In2S6/fluorinated polymeric carbon nitride nanosheets photocatalyst for boosting photocatalytic degradation and hydrogen production performance
Authors: Wu, Yan
Wang, Hou
Tu, Wenguang
Liu, Yue
Wu, Shuyang
Tan, Yong Zen
Chew, Jia Wei
Keywords: Science::Chemistry
Issue Date: 2018
Source: Wu, Y., Wang, H., Tu, W., Liu, Y., Wu, S., Tan, Y. Z., & Chew, J. W. (2018). Construction of hierarchical 2D-2D Zn3In2S6/fluorinated polymeric carbon nitride nanosheets photocatalyst for boosting photocatalytic degradation and hydrogen production performance. Applied Catalysis B: Environmental, 233, 58-69. doi:10.1016/j.apcatb.2018.03.105
Journal: Applied Catalysis B: Environmental
Abstract: The development of novel hybrid photocatalysts with high efficiency and durability for photocatalytic degradation and hydrogen production is highly desired, but still remains a great challenge currently. In this work, novel hierarchical composites consisting of petal-like Zn3In2S6 nanosheets and varying amounts of fluorine doped polymeric carbon nitride (FCN) were successfully prepared as photocatalysts for the photocatalytic degradation of methyl orange and H2 evolution under visible light irradiation. The incorporation of FCN into Zn3In2S6 nanosheets significantly enhanced the photocatalytic activity for H2 evolution (reduction) and degradation of methyl orange (oxidation). And the best-performing Zn3In2S6/FCN composite (i.e., ZF3) exhibited enhanced visible-light-driven photocatalytic methyl orange degradation efficiency of about 7.36 and 5.35 times higher than those of pure FCN and Zn3In2S6, respectively. Trapping experiments combined with electron spin resonance spectroscopy indicated that the active radicals ([rad]O2− and [rad]OH) and oxidizing h+ were responsible for the photocatalytic reaction. Meanwhile, the cumulative H2 evolution quantity by ZF3 sample via photocatalytic H2 evolution from water splitting under 5 h of light irradiation reached 2553.9 μmol.g−1, which was 3.66 times higher than that of Zn3In2S6 (698.2 μmol.g−1). Cyclic tests demonstrated the stability of the ZF3 composite over five cycles of repeated use. These excellent performances were found to be attributable to the remarkable charge carrier separation between FCN and Zn3In2S6, with the aid of interfacial heterojunction structures. Based on the above results, the possible photocatalytic reaction mechanisms of ZF3 composite in both pollutant degradation and H2 evolution from water splitting were also proposed. This study provides new insights into the preparation of highly-efficient hierarchical composite photocatalysts, which are promising for implementation in wide-ranging environmental applications.
URI: https://hdl.handle.net/10356/138362
ISSN: 0926-3373
DOI: 10.1016/j.apcatb.2018.03.105
Rights: © 2018 Elsevier B.V. All rights reserved. This paper was published in Applied Catalysis B: Environmental and is made available with permission of Elsevier B.V.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

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