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Novel MnS/(In$_{x}$Cu$_{1-x}$)$_{2}$S$_{3}$ composite for robust solar hydrogen sulphide splitting via the synergy of solid solution and heterojunction

Dan, M.; Wei, S.; Doronkin, D. E.; Li, Y.; Zhao, Z.; Yu, S.; Grunwaldt, J.-D.; Lin, Y.; Zhou, Y.

Abstract:
Large photocatalytic hydrogen (H$_{2}$) production from copious waste hydrogen sulphide (H$_{2}$S) can meet the increasing demand for H$_{2}$ in a sustainable manor which is beneficial from both environmental and energy standpoints. In this work, we reported a robust MnS/(In$_{x}$Cu$_{1-x}$)$_{2}$S$_{3}$ composite photocatalyst. Both experimental results and density functional theory (DFT) calculations proved that Cu does not act as a cocatalyst but forms a solid solution ((In$_{x}$Cu$_{1-x}$)$_{2}$S$_{3}$) in the composites, which plays dual roles in improving the photocatalytic performance of H2S splitting: (i) enhancing solar light absorption, and (ii) promoting the desorption of sulfur (S) adsorbed on the catalyst surface. Moreover, the formation of a heterojunction between γ-MnS and (In$_{x}$Cu$_{1-x}$)$_{2}$S$_{3}$ can significantly improve charge separation and migration in the composites. As a result, the MnS/(In$_{x}$Cu$_{1-x}$)$_{2}$S$_{3}$ exhibits greatly extended visible light absorption up to 599 nm and extraordinarily high photocatalytic H$_{2}$ production under visible light from H$_{2}$S with a maximum rate of 29,252 μmol h$^{-1}$ g$^{-1}$. ... mehr

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Postprint §
DOI: 10.5445/IR/1000088193
Veröffentlicht am 08.01.2020
Preprint §
DOI: 10.5445/IR/1000088193/pre
Veröffentlicht am 08.01.2020
Originalveröffentlichung
DOI: 10.1016/j.apcatb.2018.11.016
Scopus
Zitationen: 15
Web of Science
Zitationen: 13
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Chemie und Polymerchemie (ITCP)
Institut für Katalyseforschung und -technologie (IKFT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 0926-3373, 1873-3883
KITopen-ID: 1000088193
HGF-Programm 37.03.01 (POF III, LK 01)
Catalysts and Mechanisms
Erschienen in Applied catalysis / B
Band 243
Seiten 790-800
Schlagwörter Photocatalytic, Hydrogen production, Hydrogen sulphide, Splitting, Composites
Nachgewiesen in Scopus
Web of Science
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