Akademik Veri Yönetim Sistemi
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, cilt.225, 2026 (SCI-Expanded, Scopus)
1-Butanol electrooxidation in alkaline media is kinetically sluggish and prone to poisoning. This study prepares gamma-Al2O3-supported Pd and Pd-CeO2 catalysts by wet impregnation and links pore accessibility and interfacial chemistry to activity. Nitrogen adsorption shows a mesoporous Type IV isotherm with H2 hysteresis, and Ce addition promotes higher accessible pore volume (0.206 vs 0.121 cm(3) g(-1) for Pd@Al2O3), indicating mitigated pore blocking. X-ray photoelectron spectroscopy reveals Pd-Ce-O lattice oxygen and mixed Pd-0/Pd2+ surface species (similar to 46/54) with predominantly Ce4+. On Au electrodes, PdCe@Al2O3/Au WE delivers a higher 1-butanol oxidation peak current density (330.7 mu A cm(-2)) and Pd mass activity (8.63 mA mg(Pd)(-1)) than Pd@Al2O3/Au WE, together with lower charge-transfer resistance and improved current retention over 1000 s. PdCe@Al2O3/Au WE doubles current density and triples Pd mass activity compared with Pd@Al2O3/Au WE. The results show that preserved mesoporosity and oxygen-transfer-active Pd-CeO2 interfaces synergistically accelerate butanol electrooxidation and suppress intermediate poisoning.