@article {4418,
	title = {Boosting photocatalytic CO2 reduction in a ZnS/ZnIn2S4 heterostructure through strain-induced direct Z-scheme and a mechanistic study of molecular CO2 interaction thereon},
	journal = {Nano Energy},
	volume = {93},
	year = {2022},
	note = {<p>n/a</p>
},
	month = {2022},
	pages = {106809},
	abstract = {<p>Employing direct Z-scheme semiconductor heterostructures in photocatalysis offers efficient charge carrier separation and isolation of both redox reactions, thus beneficial to reduce CO2 into solar fuels. Here, a ZnS/ZnIn2S4 heterostructure, comprising cubic ZnS nanocrystals on hexagonal ZnIn2S4 (ZIS) nanosheets, is successfully fabricated in a single-pot hydrothermal approach. The composite ZnS/ZnIn2S4 exhibits microstrain at its interface with an electric field favorable for Z-scheme. At an optimum ratio of Zn:In (~ 1:0.5), an excellent photochemical quantum efficiency of around 0.8\% is reached, nearly 200-fold boost compared with pristine ZnS. Electronic levels and band alignments are deduced from ultraviolet photoemission spectroscopy and UV-Vis. Evidence of the direct Z-scheme and carrier dynamics is verified by photo-reduction experiment, along with photoluminescence (PL) and time-resolved PL. Finally, diffuse-reflectance infrared Fourier transformed spectroscopy explores the CO2 and related intermediate species adsorbed on the catalyst during the photocatalytic reaction. This microstrain-induced direct Z-scheme approach opens a new pathway for developing next-generation photocatalysts for CO2 reduction.</p>
},
	keywords = {CO reduction, Interfacial charge transfer, Photocatalysis, Z-Scheme, ZnInS, ZnS},
	isbn = {2211-2855},
	url = {https://www.sciencedirect.com/science/article/pii/S2211285521010582},
	author = {Sabbah, Amr and Indrajit Shown and Mohammad Qorbani and Fang-Yu Fu and Lin, Tsai-Yu and Heng-Liang Wu and Chung, Po-Wen and Chih-I. Wu and Santiago, Svette Reina Merden and Ji-Lin Shen and Kuei-Hsien Chen and Li-Chyong Chen}
}
