Fig. 3: Mechanistic investigation of reactive oxygen species (ROSs) generation and PMS activation pathways. | Nature Communications

Fig. 3: Mechanistic investigation of reactive oxygen species (ROSs) generation and PMS activation pathways.

From: Dynamic oxygen vacancy engineering on CuO via refreshable catalytic surface for high-efficient water decontamination

Fig. 3: Mechanistic investigation of reactive oxygen species (ROSs) generation and PMS activation pathways.

a EPR spectra of DMPO-trapped radicals (•OH and SO4•−) across different catalytic systems. b Quenching experiments identifying dominant reactive species in OH−/CuO/PMS system. c Identifying the existence of Cu(III) by in-situ Raman spectra in the OH−/CuO/PMS system. d Electrochemical i-t response curves tracking interfacial electron transfer processes. e The contribution of PMS, •OH, and SO4•− to SMX removal. f In-situ Raman spectroscopic monitoring of PMS activation in various situations.

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