▎ 摘　　要

Mass-transport acceleration is essential toward enhanced electrocatalyticperformance yet rarely recognized under irradiation, because light is usually reported toimprove charge transfer. We studied laser-enhanced mass transport through the heterojunctionbetween Ag and semiconductor Fe2O3situated on graphene for oxygen reduction reaction.Because of the decreased mass-transport resistance by 59% under 405 nm laser irradiation, thecurrent density can be enhanced by 180%, which is also supported by a theoretical calculation.This laser-enhanced mass transport was attributed to local photothermal heating and the near-field local enhancement. Easier desorption of OH-species occurring between the Fe and Agcenters under the laser accelerates the mass-transport centers