查看文章

Here, the synthesis of RuO₂ loaded CeO₂ with varying amount of Ru loading with enhanced amount of Ce³⁺ and surface area, through synthesis of CeO₂ using cerium ammonium carbonate complex as procure followed by Ru loading by impregnation and calcination at 300 °C, is presented. Corresponding characterizations by XRD, SEM, TEM, XPS of all the samples reveal the formation of highly crystalline mesoporous CeO₂ nanoparticles with uniformly dispersed RuO₂ particles on the CeO₂ surface having approximately 45% Ce³⁺. All the samples were utilized as oxygen evolution reaction (OER) catalyst for electrocatalytic H₂ generation through water electrolysis. Electrocatalytic experiments reveal that synthesized 1 wt% RuO₂ loaded CeO₂ (1-RuO₂/CeO₂) showed superior OER activity. A quite low over-potential of 350 mV is required to attain a current density of 10 mA/cm² (ɳ₁₀), with a Tafel slope of 74 …