Heterojunctions of silver-iron oxide on graphene for laser-coupled oxygen reduction reactions

• Main Authors: Chen, Wei Quan, Chung, Min Chuan, Valinton, Joey Andrew A., Penaloza, David P., Chuang, Shiow Huey, Chen, Chun Hu
• Format: text
• Published: Animo Repository 2018
• Subjects: Iron oxides; Oxygen > Absorption and adsorption; Chemistry
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/3313
• Institution: De La Salle University

We report a two-step hybridization of N-doped graphene and Ag-decorated Fe2O3 hematite to realize a balanced oxygen adsorption/desorption equilibrium and a laser-coupled ORR (LORR). The stable plateau currents with n values of 3.9 in a wide potential range (0.2-0.7 V) and 7.5% peroxide inhibition of the LORR are found to be directly associated with the Ag/Fe2O3 heterojunction, where interactions of semiconductor band gap excitation and plasmonic resonance-induced hot electrons are proposed to occur. © 2018 The Royal Society of Chemistry.