“…Recently, persulfate (PS), a kind of oxidant agent, was used for in situ chemical oxidation in the remediation of organic pollutants in aqueous systems (Ahmad et al, 2013;Hazimea et al, 2013). A large number of studies showed that PS can be active by UV, heat, alkaline, transition metals to produce sulfate radicals (SO 4 À ) and hydroxyl radicals ( OH) (Chen and Huang, 2015;Hazimea et al, 2013;Waldemer et al, 2007;Zeng et al, 2016;Hu et al, 2016), which have high redox potential and can destroy most of organic compounds efficiently. Hu and tian investigated the g-C 3 N 4 /Fe(III)/ PS system which found that the phenol degradation efficiency can be significantly improved by combing photocatalysis and light Fenton interaction (Hu et al, 2016).…”