The DOI matches its Crossref record; 39 of the 39 references it cites were found in a registry or an index.
Efficient Photocatalytic Decomposition of Perfluorooctanoic Acid by Indium Oxide and Its Mechanism
Abstract
Perfluorooctanoic acid (C(7)F(15)COOH, PFOA) has increasingly attracted worldwide concerns due to its global occurrence and resistance to most conventional treatment processes. Though TiO(2)-based photocatalysis is strong enough to decompose most organics, it is not effective for PFOA decomposition. We first find that indium oxide (In(2)O(3)) possesses significant activity for PFOA decomposition under UV irradiation, with the rate constant about 8.4 times higher than that by TiO(2). The major intermediates of PFOA were C(2)-C(7) shorter-chain perfluorocarboxylic acids, implying that the reaction proceeded in a stepwise manner. By using diffuse reflectance infrared Fourier transform spectroscopy, (19)F magic angle spinning nuclear magnetic resonance, and electron spin resonance, we demonstrate that the terminal carboxylate group of PFOA molecule tightly coordinates to the In(2)O(3) surface in a bidentate or bridging configuration, which is beneficial for PFOA to be directly decomposed by photogenerated holes of In(2)O(3) under UV irradiation, while PFOA coordinates to TiO(2) in a monodentate mode, and photogenerated holes of TiO(2) preferentially transform to hydroxyl radicals, which are inert to react with PFOA. PFOA decomposition in wastewater was inhibited by bicarbonate and other organic matters; however, their adverse impacts can be mostly avoided via pH adjustment and ozone addition.
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Li, F., Duan, J., Tian, S., Ji, H., Zhu, Y., Wei, Z., & Zhao, D. (2020) · Chemical Engineering Journal · doi:10.1016/j.cej.2019.122506 · Cited by 707
Trojanowicz, M., Bojanowska-Czajka, A., Bartosiewicz, I., & Kulisa, K. (2018) · Chemical Engineering Journal · doi:10.1016/j.cej.2017.10.153 · Cited by 550
Degradation and Removal Methods for Perfluoroalkyl and Polyfluoroalkyl Substances in Water
Merino, N., Qu, Y., Deeb, R. A., Hawley, E. L., Hoffmann, M. R., & Mahendra, S. (2016) · Environmental Engineering Science · doi:10.1089/ees.2016.0233 · Cited by 349
Remediation of water from per-/poly-fluoroalkyl substances (PFAS)–Challenges and perspectives
Garg, S., Wang, J., Kumar, P., Mishra, V., Arafat, H., Sharma, R. S., & Dumée, L. F. (2021) · Journal of Environmental Chemical Engineering · doi:10.1016/j.jece.2021.105784 · Cited by 139
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Metadata
- Authors
- Li, X., Zhang, P., Jin, L., Shao, T., Li, Z., & Cao, J.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-05-01
- Volume
- 46
- Issue
- 10
- Pages
- 5528-5534
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W1990291660
- Cited by
- 274
- References
- 39
- FWCI
- 9.17
- Type
- journal article
- Language
- en
- Open access
- closed
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- Li, X., Zhang, P., Jin, L., Shao, T., Li, Z., & Cao, J. (2012). Efficient Photocatalytic Decomposition of Perfluorooctanoic Acid by Indium Oxide and Its Mechanism. Environmental Science & Technology. https://doi.org/10.1021/es204279u
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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