Response to Comment on “Factors Affecting the Yield of Oxidants from the Reaction of Nanoparticulate Zero-Valent Iron and Oxygen”

Efficiency and mechanisms of rhodamine B degradation in Fenton-like systems based on zero-valent iron

“…In the presence of H 2 O 2 , O 2 or natural organic compounds, various redox reactions were driven. [21][22][23][24] The main principle of Fe 0 /H 2 O 2 systems is that ZVI is oxidized to Fe 2+ via two-electron transfer from the surface of the particle to H 2 O 2 . 25 The reaction between Fe 2+ and H 2 O 2 can generate cOH and Fe 3+ .…”

Degradation of 4‐chlorophenol by BM Fe/Cu‐O2 system: The symbiosis of and ·OH radicals

“…These results clearly showed that O 2 has an important effect on 4‐CP degradation, which might be attributed to the dissolution of metals and the production of ROS (Liu, Fan, Ma, ). Previous studies have shown that O 2 can be used as the first electron acceptor to produce high‐activity ROS in the nZVI catalytic system (Keenan & Sedlak, ). Liu (Liu, Fan, Hao, et al., ) also verified that the Fe/Cu bimetal can hardly remove EDTA in the absence of oxygen, whereas more than 90% of the 0.5 mM EDTA could be removed in 3 hr at initial pH of 3.0 in the presence of oxygen.…”

Metals (Al, Fe, Zn) doped in single walled carbon nanotubes for catalytic oxidation of H2O to H2O2: a theoretical investigation

“…50 These experimental conclusions are consistent with our present work that our constructed Al-SWCNT and Zn-SWCNT catalysts have better catalytic activity than the Fe-SWCNT catalyst. 26,27 3.6. Research on the physical properties of Al-SWCNT, Zn-SWCNT and Fe-SWCNT catalysts Fig.…”

“…To solve this problem, experiments using abundant metals Zn, Al and Fe as catalysts to reduce O 2 for the generation of H 2 O 2 began to emerge. [26][27][28] For instance, Keenan et al proposed that Fe is a good catalyst for generating H 2 O 2 based on the comparison of two different reaction mechanisms. 26 Wen et al have found that the H 2 O 2 generated by the combination of ozone and Zn can be directly used to degrade pollutants.…”

“…26–28 For instance, Keenan et al proposed that Fe is a good catalyst for generating H 2 O 2 based on the comparison of two different reaction mechanisms. 26 Wen et al have found that the H 2 O 2 generated by the combination of ozone and Zn can be directly used to degrade pollutants. 27 Fan et al reported that a bimetallic Al 0 –Fe 0 /O 2 process can spontaneously produce an active free radical OH to rapidly oxidize 4-bromophenol, which widens the use of bimetallic Al 0 –Fe 0 /O 2 in actual industrial wastewater treatment.…”