Oxalates, together with iron (hydr)oxides, play important roles in environmental decontamination by photochemical generation of reactive oxygen species (ROS). However, comprehending reaction mechanism about photolytic behaviors across solid-liquid interface is scarce. Here, the photochemical properties of hematite-oxalate system were investigated from complexation, photolysis, and ROS generation tests. Results implied adsorbed oxalate on hematite surface was detached via non-reductive dissolution by irradiating light. Then, the photolysis of Fe...
