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Mass transfer in electrolyte plays a crucial role in electrocatalytic degradation of organic pollutants. The doping of N and O atoms in carbon substrate effectively enhances the interactions between substrate and chloramphenicol (CAP), promoting the mass transfer process. Density functional theory calculations reveal that the doped N and O atoms form hydrogen bonds with CAP, enhancing the enrichment effect of CAP molecules in the vicinity around catalyst. More details are discussed in the article by Lu et al. on pages 2445—2452.