Colloidal synthesis of hexagonal CuFe(SxSe1−x)2 nanoplates with exposed highly active (220) facets for boosting overall water splitting

CuFe(S x Se 1− x ) 2 NPs with adjusted S/Se ratios were synthesized via a hot-injection method, which exhibited excellent electrocatalytic activities for water splitting due to the reduced band gap, regulated d-band center, and high exposure of active (220) facets.