过电位
分解水
双功能
材料科学
催化作用
MXenes公司
析氧
热液循环
化学工程
电催化剂
纳米结构
纳米技术
电极
化学
电化学
光催化
物理化学
工程类
生物化学
作者
Iffat Ashraf,Saba Ahmad,Farzana Nazir,Davoud Dastan,Zhicheng Shi,Hamid Garmestani,Mudassir Iqbal
标识
DOI:10.1016/j.ijhydene.2022.06.095
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 H2 and O2 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.
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