Universität zu Köln

Khan, Sovann ORCID: 0000-0003-0549-1841, Je, Minyeong, Lei, Wenwei, Taniike, Toshiaki, Yanagida, Sayaka, Ogawa, Daisuke, Suzuki, Norihiro ORCID: 0000-0002-7154-3892, Terashima, Chiaki, Fujishima, Akira, Choi, Heechae ORCID: 0000-0002-9390-6607 and Katsumata, Ken-ichi (2021). C-doped ZnS-ZnO/Rh nanosheets as multijunctioned photocatalysts for effective H-2 generation from pure water under solar simulating light. Appl. Catal. B-Environ., 297. AMSTERDAM: ELSEVIER. ISSN 1873-3883

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Abstract

A combined solvothermal method and post-annealing to synthesize highly active ZnS-ZnO nanosheets is presented. ZnO was produced on ZnS nanosheets by thermal annealing ZnS/ethylenediamine in air. From combined studies of experimental and computational works, we revealed that during annealing, carbon (C) element was a major dopant from the decomposition of ethylenediamine, which was unintentionally doped into the ZnS-ZnO, and gave major impacts on enhanced visible-light photocatalysis. Rhodium (Rh) was deposited by in situ photoreduction to form a ZnS-ZnO/Rh catalyst composite. This multijunctioned photocatalyst was outstanding for H-2 generation from pure water under solar simulating light due to effective charge separation by Z-scheme heterojunction of ZnS and ZnO and Schottky junction of Rh-cocatalysts/semiconductors. This facile method realizes multijunctioned ZnS-ZnO/Rh photocatalysts with substantial defects that are very promising for solar energy harvesting applications.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Khan, Sovann UNSPECIFIED orcid.org/0000-0003-0549-1841 UNSPECIFIED Je, Minyeong UNSPECIFIED UNSPECIFIED UNSPECIFIED Lei, Wenwei UNSPECIFIED UNSPECIFIED UNSPECIFIED Taniike, Toshiaki UNSPECIFIED UNSPECIFIED UNSPECIFIED Yanagida, Sayaka UNSPECIFIED UNSPECIFIED UNSPECIFIED Ogawa, Daisuke UNSPECIFIED UNSPECIFIED UNSPECIFIED Suzuki, Norihiro UNSPECIFIED orcid.org/0000-0002-7154-3892 UNSPECIFIED Terashima, Chiaki UNSPECIFIED UNSPECIFIED UNSPECIFIED Fujishima, Akira UNSPECIFIED UNSPECIFIED UNSPECIFIED Choi, Heechae UNSPECIFIED orcid.org/0000-0002-9390-6607 UNSPECIFIED Katsumata, Ken-ichi UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-592038
DOI:	10.1016/j.apcatb.2021.120473
Journal or Publication Title:	Appl. Catal. B-Environ.
Volume:	297
Date:	2021
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1873-3883
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language GENERALIZED GRADIENT APPROXIMATION; TOTAL-ENERGY CALCULATIONS; HYDROGEN; SULFIDE; NANOSTRUCTURES; NANOPARTICLES; DEGRADATION; EFFICIENCY; OXIDATION; GROWTH Multiple languages Chemistry, Physical; Engineering, Environmental; Engineering, Chemical Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/59203