Ultrasonication-assisted liquid-phase exfoliation enhances photoelectrochemical performance in ?-Fe2O3/MoS2 photoanode

• Ultrasonication-assisted synthesis of MoS 2 nanosheets improved PEC performance. Liquid phase exfoliation was used for with 6 nm thickness. Photocurrent ?-Fe O 3 photoanode significantly increased by heterojunction. /8-MoS showed a thinner space charge layer and reduced flat band potential. p-n junction decreased resistance due to the recombination rate carriers. This study successfully manufactured heterojunction hematite (?-Fe ) structure molybdenum disulfide (MoS address electron–hole transfer problems conventional enhance photoelectrochemical (PEC) The two-dimensional were prepared through ultrasonication-assisted liquid-phase exfoliation, after which concentration, number layers, thickness parameters respectively estimated UV–vis, HRTEM AFM analysis be 0.37 mg/ml, 10–12 layers around nm. effect /MoS role ultrasonication process investigated optimized concentration in forms bulk nanosheet on surface electrode while measuring best photocurrent density obtained at 1.52 0.86 mA.cm ?2 good stability 0.6 V vs. Ag/AgCl under 100 mW/cm (AM 1.5) illumination from back- front-sides ; these values are 13.82 7.85-times higher than those pure , respectively. results electrochemical impedance spectroscopy (EIS) Mott-Schottky donor (2.6-fold) potential (by 20%). Moreover, IPCE, ABPE, OCP analyses also supported enhanced performance formation p–n heterojunction, leading facile transfer.