@article {4121,
	title = {A mechanistic study of molecular CO2 interaction and adsorption on carbon implanted SnS2 thin film for photocatalytic CO2 reduction activity},
	volume = {72},
	year = {2020},
	note = {n/a},
	month = {2020},
	pages = {104717},
	abstract = {<p>Gas-phase photocatalytic reactions to convert carbon dioxide and water into oxygen and hydrocarbons are the foundation of life on earth. However, the efficiency of photosynthesis is relatively low (~1\%), which leaves much room for artificial photosynthesis to reach the benchmark of the solar cells (\&gt;15\%). In this work, carbon implanted SnS2 thin films (C{\textendash}SnS2) were prepared to study photocatalytic activity and adsorbate-catalyst surface interactions during CO2 photoreduction. The electron density distribution in C{\textendash}SnS2 and its contribution toward the photogenerated charge transfer process has been analyzed by the angle-dependent X-ray absorption near-edge structure (XANES) study. The C{\textendash}SnS2 surface affinity toward the CO2 molecule was monitored by in-situ dark current and Raman spectroscopy measurements. By optimizing the dose during ion implantation, SnS2 thin film with 1~wt\% carbon incorporation shows 108 times enhancement in the CO2 conversion efficiency and more than 89\% product selectivity toward CH4 formation compared with the as-grown SnS2 without carbon incorporation. The improved photocatalytic activity can be ascribed to enhanced light harvesting, pronounced charge-transfer between SnS2 and carbon with improved carrier separation and the availability of highly active carbon sites that serve as favorable CO2 adsorption sites.</p>
},
	keywords = {artificial photosynthesis, Photocatalytic CO reduction, SnS, solar fuels},
	isbn = {2211-2855},
	url = {http://www.sciencedirect.com/science/article/pii/S2211285520302743},
	author = {Tadesse Billo and Indrajit Shown and Anbalagan, Aswin kumar and Effendi, Tirta Amerta and Sabbah, Amr and Fang-Yu Fu and Chu, Che-Men and Woon, Wei-Yen and Ruei-San Chen and Chih-Hao Lee and Kuei-Hsien Chen and Li-Chyong Chen}
}
