@article {48962,
	title = {Wurtzite CuGaS2 with an in-situ-formed CuO layer photocatalyzes CO2 conversion to ethylene with high selectivity},
	journal = {Angewandte chemie-international edition},
	volume = {62},
	year = {2023},
	month = {FEB 20},
	type = {Article},
	abstract = {<p>We present surface reconstruction-induced C-C coupling whereby CO2 is converted into ethylene. The wurtzite phase of CuGaS2. undergoes in situ surface reconstruction, leading to the formation of a thin CuO layer over the pristine catalyst, which facilitates selective conversion of CO2 to ethylene (C2H4). Upon illumination, the catalyst efficiently converts CO2 to C2H4 with 75.1 \% selectivity (92.7 \% selectivity in terms of R-electron) and a 20.6 mu mol g(-1) h(-1) evolution rate. Subsequent spectroscopic and microscopic studies supported by theoretical analysis revealed operando-generated Cu2+, with the assistance of existing Cu+, functioning as an anchor for the generated *CO and thereby facilitating C-C coupling. This study demonstrates strain-induced in situ surface reconstruction leading to heterojunction formation, which finetunes the oxidation state of Cu and modulates the CO2 reduction reaction pathway to selective formation of ethylene.</p>
},
	keywords = {C-C coupling, charge polarization, CO2 reduction, Photocatalysis},
	issn = {1433-7851},
	doi = {10.1002/anie.202216613},
	author = {Chakraborty, Subhajit and Das, Risov and Riyaz, Mohd and Das, Kousik and Singh, Ashutosh Kumar and Bagchi, Debabrata and Vinod, Chathakudath P. and Peter, Sebastian C.}
}
