The DOI matches its Crossref record; 54 of the 54 references it cites were found in a registry or an index.
Photocatalytic degradation and mineralization of perfluorooctanoic acid (PFOA) using a composite TiO2 −rGO catalyst
Open accessAbstract
The inherent resistance of perfluoroalkyl substances (PFASs) to biological degradation makes necessary to develop advanced technologies for the abatement of this group of hazardous substances. The present work investigated the photocatalytic decomposition of perfluorooctanoic acid (PFOA) using a composite catalyst based on TiO2 and reduced graphene oxide (95% TiO2/5% rGO) that was synthesized using a facile hydrothermal method. The efficient photoactivity of the TiO2-rGO (0.1gL-1) composite was confirmed for PFOA (0.24mmolL-1) degradation that reached 93±7% after 12h of UV-vis irradiation using a medium pressure mercury lamp, a great improvement compared to the TiO2 photocatalysis (24±11% PFOA removal) and direct photolysis (58±9%). These findings indicate that rGO provided the suited properties of TiO2-rGO, possibly as a result of acting as electron acceptor and avoiding the high recombination electron/hole pairs. The release of fluoride and the formation of shorter-chain perfluorocarboxilyc acids, that were progressively eliminated in a good match with the analysed reduction of total organic carbon, is consistent with a step-by-step PFOA decomposition via photogenerated hydroxyl radicals. Finally, the apparent first order rate constants of the TiO2-rGO UV-vis PFOA decompositions, and the intermediate perfluorcarboxylic acids were found to increase as the length of the carbon chain was shorter.
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Cites
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Cited by
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
Physico-Chemical Processes for the Treatment of Per- And Polyfluoroalkyl Substances (PFAS): A review
Nzeribe, B. N., Crimi, M., Mededovic Thagard, S., & Holsen, T. M. (2019) · Critical Reviews in Environmental Science and Technology · doi:10.1080/10643389.2018.1542916 · Cited by 314
Lu, D., Sha, S., Luo, J., Huang, Z., & Zhang Jackie, X. (2020) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2019.121963 · Cited by 275
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
Bao, Y., Cagnetta, G., Huang, J., & Yu, G. (2020) · Chemical Engineering Journal · doi:10.1016/j.cej.2019.122866 · Cited by 74
Metadata
- Authors
- Gomez-Ruiz, B., Ribao, P., Diban, N., Rivero, M. J., Ortiz, I., & Urtiaga, A.
- Venue
- Journal of Hazardous Materials
- Publisher
- Elsevier BV
- Published
- 2018-02
- Volume
- 344
- Pages
- 950-957
- ISSN
- 0304-3894 (ISSN-L)
- OpenAlex
- W2769125629
- Cited by
- 257
- References
- 54
- FWCI
- 8.95
- Type
- journal article
- Language
- en
- Open access
- green
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