Ru nanoparticles supported on partially reduced TiO2 as highly efficient catalyst for hydrogen evolution

The development of low-cost yet highly efficient catalysts for hydrogen evolution reaction (HER) is crucial large-scale clean and sustainable production from water splitting. Tuning the interfacial structure catalyst has emerged as an effective strategy to optimize intrinsic catalytic activity. In this study, we demonstrated deposition Ru nanoparticles by freshly prepared strong reductive Ti(III) oxide, resulting in Ru/reduced TiO 2 interface with oxygen vacancies. as-prepared Ru/r-TiO exhibited a superior HER performance over commercial Pt/C alkaline media, only small overpotential 15 mV required deliver benchmark current density 10 mA cm −2 high turnover frequency 8.74 s −1 achieved at 100 mV. Density functional theory calculation indicates that electrocatalytic activity originated promotion dissociation weakening OH adsorption reduced , which facilitate conversion H . This work provides design high-performance catalysts. • Reduced -supported nanocatalyst negatively charged vacancies was prepared. media. Only need High attributed synergy promoting OH* adsorption.