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Activated PDS of Single-Atom-Fe(III): Nonradical Oxidation of Pollutants

Prof. Jiang  et al ., from (1 . Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing, China; 2 . University of Chinese Academy of Sciences, Beijing, China, 3 . Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, China ) and their research collaboration team have reported on the single-atom Fe(III)- and nitrogen doped carbon (Fe−N−C) which can efficiently activate peroxydisulfate (PDS) to selectively remove some organic pollutants following an unreported nonradical pathway. Generally, PDS is used as an oxidant for the degradation of polluted water/soil, it generates sulfate radical intermediate for the degradation pollutants, and this radical unselectively reacts with most of the substances in water/soil. PDS can be activated by base, heat, UV, low valent transition metal ions (e.g., Co 2+, Fe 2+, Cu 2+, and Ag + ), and zero valent iron to produce a sulfate radical (SO 4 •− ). All these PDS activation...