Enhancing visible-light photocatalytic performance and stability of Ag3PO4 nanoparticles by coupling with hierarchical flower-like In2S3 microspheres
- School of Chemistry and Chemical Engineering, Institute of Physical Chemistry, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Lingnan Normal University, Zhanjiang 524048 (China)
Highlights: • A hierarchical In{sub 2}S{sub 3}/Ag{sub 3}PO{sub 4} composite photocatalyst was successfully constructed. • In{sub 2}S{sub 3}/Ag{sub 3}PO{sub 4} exhibited greatly boosted visible light photocatalytic activity. • A reasonable Z-scheme charge transfer mechanism was tentatively proposed. - Abstract: In this study, hierarchical In{sub 2}S{sub 3}/Ag{sub 3}PO{sub 4} hybrid photocatalysts were successfully fabricated through an in situ chemical precipitation method and employed to the photocatalytic degradation of methyl orange (MO) under visible light irradiation. As expected, all the In{sub 2}S{sub 3}/Ag{sub 3}PO{sub 4} composites exhibited improved photocatalytic activities compared with individual Ag{sub 3}PO{sub 4} and In{sub 2}S{sub 3}. Dramatically, the optimal apparent degradation rate constant of the In{sub 2}S{sub 3}/Ag{sub 3}PO{sub 4} composite with a theoretical weight content of 4.0% In{sub 2}S{sub 3} was almost 2.3 and 1.6 times higher than that of bare Ag{sub 3}PO{sub 4} and single In{sub 2}S{sub 3}, respectively. The enhanced photocatalytic performance was mainly attributed to the formation of Z-scheme system composed of Ag{sub 3}PO{sub 4}, Ag and In{sub 2}S{sub 3}, which could not only facilitate the transfer and separation of photogenerated charge carriers, but also preserve a strong oxidation and reduction ability. Furthermore, a reasonable Z-scheme charge transfer mechanism was also proposed in detail.
- OSTI ID:
- 22803910
- Journal Information:
- Materials Research Bulletin, Vol. 100; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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