Hydrothermal synthesis and water splitting application of d-Ti3C2 MXene/V2O5 hybrid nanostructures as an efficient bifunctional catalyst

摘要

Fabrication of bi-functional noble metal-free catalysts with high efficacy and low cost are needed for hydrogen and oxygen evolution reactions. Herein, we provide a simple hydrothermal method to synthesize delaminated-Ti3C2/V2O5 (d-Ti3C2/V2O5) hybrid nanostructures. d-Ti3C2/V2O5 hybrid nanostructures are highly active in the hydrogen evolution reaction (HER) with 90 mV at 10 mA cm(-2). Superior oxygen evolution activity is observed for d-Ti3C2/V2O5 with 240 mV overpotential at 10 mA cm(-2). Impressively, d-Ti3C2/V2O5 could efficiently drive water splitting into H-2 and O-2 at a voltage of 1.45 V at 10 mAcm(-2) in a two-electrode configuration and a long-term stability was verified for 24 h with a negligible loss in the current density. This is owing to catalytic activity may be due to synergistic effect between d-Ti3C2 MXene and V2O5 nanostructures. The present study highlights different hybrid nanostructures of d-Ti3C2 MXene with metal oxides which can beneficially accelerates electron transfer during the water splitting process and are useful to improve electrocatalytic performance of various MXenes. (C) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.