Generating dual-active species by triple-atom sites through peroxymonosulfate activation for treating micropollutants in complex water

The peroxymonosulfate (PMS)-triggered radical and nonradical active species can synergistically guarantee selectively removing micropollutants in complex wastewater; however, realizing this on heterogeneous metal-based catalysts with single active sites remains challenging due to insufficient electron cycle. Herein, we design asymmetric Co–O–Bi triple-atom sites in Co-doped Bi 2 O 2 CO 3 to facilitate PMS oxidation and reduction simultaneously by enhancing the electron transfer between the active sites. We propose that the asymmetric Co–O–Bi sites result in an electron density increase in the Bi sites and decrease in the Co sites, thereby PMS undergoes a reduction reaction to generate SO 4 •- and •OH at the Bi…

• NN
  National Natural Science Foundation of China

  Awards: 42277059, U1906222, 21874099, 22225604 and 22076082, 21874099 and 22176140, 22076082, 22176140, 22006029, 2019YFC1804104, 22225604, 22006029 and 42277059, 63181206