Further understanding the involvement of Fe(IV) in peroxydisulfate and peroxymonosulfate activation by Fe(II) for oxidative water treatment

Removal of contaminants by activating peroxymonosulfate (PMS) using zero valent iron (ZVI)-based bimetallic particles (ZVI/Cu, ZVI/Co, ZVI/Ni, and ZVI/Ag)

“…For instance, Zhen Wang et al observed that Fe(IV)-oxo species were produced in the Fe(II)/PMS system at acidic pH. 49 However, Fig. S9-S13 † show that Fe(IV) is not the dominant reactive intermediate in our systems.…”

Cooperation of Fe(II) and peroxymonosulfate for enhancement of sulfamethoxazole photodegradation: mechanism study and toxicity elimination

“…Besides, the possible involvement of Fe(IV)O 2 + in the reaction system PMS + Fe(II) may also contribute to the relatively higher removal efficiency. 37 The SMX degradation is much more signicant in the rst 5 minutes (with approximately 30% removal efficiency) than that in the following 20 minutes (with only about 5% additional removal). From Fig.…”

Reactive Oxygen Species Synergistic pH/H2O2-Responsive Poly(l-lactic acid)-block-poly(sodium 4-styrenesulfonate)/Citrate-Fe(III)@ZIF-8 Hybrid Nanocomposites for Controlled Drug Release

“…•− (k SO4•−/MA = 1.6 × 10 7 M −1 s −1 ), while TBA can be served an • OH scavenger since it has a high reactivity with • OH (k • OH/TBA = (3.8−7.6) × 10 8 M −1 s −1 ) but a relatively low reactivity with SO4 •− (k SO4 •−/TBA = (4.0−9.1) × 10 5 M −1 s −1 ). 61,62 As shown in Figure 4b, the degradation rate of RhB is very fast without adding either of the alcohols. In contrast, after addition of 50 mM of TBA, the degradation rate of RhB is decreased to some extent, which suggests that a portion of generated • OH is scavenged by TBA.…”