Chinese Journal of Catalysis ›› 2022, Vol. 43 ›› Issue (10): 2615-2624.DOI: 10.1016/S1872-2067(22)64134-2
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Mengyu Zhaoa, Sen Liua, Daimei Chena,*(), Sushu Zhangb, Sónia A. C. Carabineiroc, Kangle Lvb,#(
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Received:
2022-03-22
Accepted:
2022-04-29
Online:
2022-10-18
Published:
2022-09-30
Contact:
Daimei Chen, Kangle Lv
Supported by:
Mengyu Zhao, Sen Liu, Daimei Chen, Sushu Zhang, Sónia A. C. Carabineiro, Kangle Lv. A novel S-scheme 3D ZnIn2S4/WO3 heterostructure for improved hydrogen production under visible light irradiation[J]. Chinese Journal of Catalysis, 2022, 43(10): 2615-2624.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(22)64134-2
Fig. 3. TEM images of WO3 nanorods (a) and ZIS-2.5/W photocatalyst (b). Elemental mapping images of Zn, In, S, W, and O elements of ZIS-2.5/W (c) and high resolution TEM image of the area marked in image (b) as a red square (d). FFT patterns of areas marked as E (e), F (f) and G (g) in image (d).
Fig. 4. High-resolution XPS spectra of the photocatalyst tested in darkness and under illumination in regions of (a) O 1s (b), Zn 2p (c), In 3d (d) and S 2p (e).
Fig. 6. Nitrogen adsorption-desorption isotherms of the photocatalysts (a) and comparison of the isotherms between ZIS-2.5/W and ZIS-2.5/W (M) samples (b).
Fig. 7. H2 evolution from water as a function of time using different photocatalysts (a) and the corresponding hydrogen production rates (b). (c) Repeated use of ZIS-2.5/W photocatalyst up to 5 cycles. (d) XRD diffractograms of ZIS-2.5/W before (bottom) and after 5 cycles of use (top).
Fig. 10. Electronic band structures of WO3 and ZnIn2S4 (a). Proposed S-scheme photo-generated electron migration pathway, at the interfaces of ZnIn2S4/WO3 heterostructure, caused by the formation of an internal electronic field after contact (b).
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