Abstract
Developing non‐platinum composite catalysts has become a hot research topic for the oxygen reduction reaction (ORR). In this study, Ag/g‐C3N4 (the mass ratio of Ag and g‐C3N4 = 3%) catalysts were prepared through a photoreduction method. The catalytic performance of g‐C3N4 was greatly enhanced after Ag doping. The current density of Ag/g‐C3N4 was −21 μA/mm2, which is 3 times that of pure g‐C3N4. The mechanism of ORR activity enhancement is discussed based on first‐principles calculation. Ag, as the active site, can reduce the reaction barrier and enhance ORR activity. Combining experimental and computational results forms the subject of this study.
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