Electron paramagnetic resonance(EPR)is a spectroscopic approach that can directly and non-destructively detect and char-acterize species with unpaired electrons,such as radicals,transi-tion metal ions,defects in mater...Electron paramagnetic resonance(EPR)is a spectroscopic approach that can directly and non-destructively detect and char-acterize species with unpaired electrons,such as radicals,transi-tion metal ions,defects in materials,and the excited triplet state of molecules[1].To date,the EPR technique has become an indis-pensable component in the toolbox of environmental studies.Using various diamagnetic probes(e.g.,5,5-dimethyl-1-pyrroline-N-oxide(DMPO))as the spin traps,transient reactive species can be transformed to EPR-detectable(meta)stable spin adducts,which enables radical identification and mechanism interpretation.Therefore,EPR constitutes a versatile platform for the mechanistic investigation of advanced oxidation processes(AOPs)in the field of water purification and contaminated groundwater remediation[2].展开更多
文摘Electron paramagnetic resonance(EPR)is a spectroscopic approach that can directly and non-destructively detect and char-acterize species with unpaired electrons,such as radicals,transi-tion metal ions,defects in materials,and the excited triplet state of molecules[1].To date,the EPR technique has become an indis-pensable component in the toolbox of environmental studies.Using various diamagnetic probes(e.g.,5,5-dimethyl-1-pyrroline-N-oxide(DMPO))as the spin traps,transient reactive species can be transformed to EPR-detectable(meta)stable spin adducts,which enables radical identification and mechanism interpretation.Therefore,EPR constitutes a versatile platform for the mechanistic investigation of advanced oxidation processes(AOPs)in the field of water purification and contaminated groundwater remediation[2].
