The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Oxidation of Sulfoxides and Arsenic(III) in Corrosion of Nanoscale Zero Valent Iron by Oxygen: Evidence against Ferryl Ions (Fe(IV)) as Active Intermediates in Fenton Reaction
Abstract
Previous studies have shown that the corrosion of zerovalent iron (ZVI) by oxygen (O(2)) via the Fenton reaction can lead to the oxidation of various organic and inorganic compounds. However, the nature of the oxidants involved (i.e., ferryl ion (Fe(IV)) versus hydroxyl radical (HO(•))) is still a controversial issue. In this work, we reevaluated the relative importance of these oxidants and their role in As(III) oxidation during the corrosion of nanoscale ZVI (nZVI) in air-saturated water. It was shown that Fe(IV) species could react with sulfoxides (e.g., dimethyl sulfoxide, methyl phenyl sulfoxide, and methyl p-tolyl sulfoxide) through a 2-electron transfer step producing corresponding sulfones, which markedly differed from their HO(•)-involved products. When using these sulfoxides as probe compounds, the formation of oxidation products indicative of HO(•) but no generation of sulfone products supporting Fe(IV) participation were observed in the nZVI/O(2) system over a wide pH range. As(III) could be completely or partially oxidized by nZVI in air-saturated water. Addition of scavengers for solution-phase HO(•) and/or Fe(IV) quenched As(III) oxidation at acidic pH but had little effect as solution pH increased, highlighting the importance of the heterogeneous iron surface reactions for As(III) oxidation at circumneutral pH.
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Katsoyiannis, I. A., Ruettimann, T., & Hug, S. J. (2008) · Environmental Science & Technology · doi:10.1021/es800649p · Cited by 463
Lee, Y., Um, I.-H., & Yoon, J. (2003) · Environmental Science & Technology · doi:10.1021/es034203+ · Cited by 299
Cited by
Review of iron-free Fenton-like systems for activating H2O2 in advanced oxidation processes
Bokare, A. D., & Choi, W. (2014) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2014.04.054 · Cited by 2,368
Reactive Species in Advanced Oxidation Processes: Formation, Identification and Reaction Mechanism
Wang, J., & Wang, S. (2020) · Chemical Engineering Journal · doi:10.1016/j.cej.2020.126158 · Cited by 1,585
Yan, Q., Lian, C., Huang, K., Liang, L., Yu, H., Yin, P., Zhang, J., & Xing, M. (2021) · Angewandte Chemie International Edition · doi:10.1002/anie.202105736 · Cited by 508
Wang, Z., Qiu, W., Pang, S.-Y., Guo, Q., Guan, C., & Jiang, J. (2022) · Environmental Science & Technology · doi:10.1021/acs.est.1c04530 · Cited by 386
Self-citationSulfite-based advanced oxidation and reduction processes for water treatment
Wu, S., Shen, L., Lin, Y., Yin, K., & Yang, C. (2021) · Chemical Engineering Journal · doi:10.1016/j.cej.2021.128872 · Cited by 382
Metadata
- Authors
- Pang, S.-Y., Jiang, J., & Ma, J.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-12-06
- Volume
- 45
- Issue
- 1
- Pages
- 307-312
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2312635262
- Cited by
- 329
- References
- 2
- FWCI
- 4.19
- Type
- journal article
- Language
- en
- Open access
- closed
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