A nano AuTiO2−x composite with electrochemical characteristics of under-potential deposition of H (H-UPD) as a highly efficient electrocatalyst for hydrogen evolution

Abstract

An obvious H-UPD for a nano AuTiO_2−x composite has been found for the first time in terms of the electrochemical characteristics of the Au composite. The electronic effect between Au and TiO₂ and the oxygen vacancy defect would change the adsorption energy of H and HER activity. The HER activity of the AuTiO_2−x electrode is 6.44 times that of the Au electrode.