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- Publisher Website: 10.1021/acs.est.8b02403
- Scopus: eid_2-s2.0-85053828604
- PMID: 30180549
- WOS: WOS:000446542100044
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Article: Enhancement of H2 O2 Decomposition by the Co-catalytic Effect of WS2 on the Fenton Reaction for the Synchronous Reduction of Cr(VI) and Remediation of Phenol
Title | Enhancement of H<inf>2</inf>O<inf>2</inf> Decomposition by the Co-catalytic Effect of WS<inf>2</inf> on the Fenton Reaction for the Synchronous Reduction of Cr(VI) and Remediation of Phenol |
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Authors | |
Issue Date | 2018 |
Citation | Environmental Science and Technology, 2018, v. 52, n. 19, p. 11297-11308 How to Cite? |
Abstract | The greatest problem in the Fe(II)/H2O2 Fenton reaction is the low production of ·OH owing to the inefficient Fe(III)/Fe(II) cycle and the low decomposition efficiency of H2O2 (<30%). Herein, we report a new discovery regarding the significant co-catalytic effect of WS2 on the decomposition of H2O2 in a photoassisted Fe(II)/H2O2 Fenton system. With the help of WS2 co-catalytic effect, the H2O2 decomposition efficiency can be increased from 22.9% to 60.1%, such that minimal concentrations of H2O2 (0.4 mmol/L) and Fe2+ (0.14 mmol/L) are necessary for the standard Fenton reaction. Interestingly, the co-catalytic Fenton strategy can be applied to the simultaneous oxidation of phenol (10 mg/L) and reduction of Cr(VI) (40 mg/L), and the corresponding degradation and reduction rates can reach up to 80.9% and 90.9%, respectively, which are much higher than the conventional Fenton reaction (52.0% and 31.0%). We found that the expose reductive W4+ active sites on the surface of WS2 can greatly accelerate the rate-limiting step of Fe3+/Fe2+ conversion, which plays the key role in the decomposition of H2O2 and the reduction of Cr(VI). Our discovery represents a breakthrough in the field of inorganic catalyzing AOPs and greatly advances the practical utility of this method for environmental applications. |
Persistent Identifier | http://hdl.handle.net/10722/341236 |
ISSN | 2023 Impact Factor: 10.8 2023 SCImago Journal Rankings: 3.516 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Dong, Chencheng | - |
dc.contributor.author | Ji, Jiahui | - |
dc.contributor.author | Shen, Bin | - |
dc.contributor.author | Xing, Mingyang | - |
dc.contributor.author | Zhang, Jinlong | - |
dc.date.accessioned | 2024-03-13T08:41:14Z | - |
dc.date.available | 2024-03-13T08:41:14Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Environmental Science and Technology, 2018, v. 52, n. 19, p. 11297-11308 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.uri | http://hdl.handle.net/10722/341236 | - |
dc.description.abstract | The greatest problem in the Fe(II)/H2O2 Fenton reaction is the low production of ·OH owing to the inefficient Fe(III)/Fe(II) cycle and the low decomposition efficiency of H2O2 (<30%). Herein, we report a new discovery regarding the significant co-catalytic effect of WS2 on the decomposition of H2O2 in a photoassisted Fe(II)/H2O2 Fenton system. With the help of WS2 co-catalytic effect, the H2O2 decomposition efficiency can be increased from 22.9% to 60.1%, such that minimal concentrations of H2O2 (0.4 mmol/L) and Fe2+ (0.14 mmol/L) are necessary for the standard Fenton reaction. Interestingly, the co-catalytic Fenton strategy can be applied to the simultaneous oxidation of phenol (10 mg/L) and reduction of Cr(VI) (40 mg/L), and the corresponding degradation and reduction rates can reach up to 80.9% and 90.9%, respectively, which are much higher than the conventional Fenton reaction (52.0% and 31.0%). We found that the expose reductive W4+ active sites on the surface of WS2 can greatly accelerate the rate-limiting step of Fe3+/Fe2+ conversion, which plays the key role in the decomposition of H2O2 and the reduction of Cr(VI). Our discovery represents a breakthrough in the field of inorganic catalyzing AOPs and greatly advances the practical utility of this method for environmental applications. | - |
dc.language | eng | - |
dc.relation.ispartof | Environmental Science and Technology | - |
dc.title | Enhancement of H<inf>2</inf>O<inf>2</inf> Decomposition by the Co-catalytic Effect of WS<inf>2</inf> on the Fenton Reaction for the Synchronous Reduction of Cr(VI) and Remediation of Phenol | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1021/acs.est.8b02403 | - |
dc.identifier.pmid | 30180549 | - |
dc.identifier.scopus | eid_2-s2.0-85053828604 | - |
dc.identifier.volume | 52 | - |
dc.identifier.issue | 19 | - |
dc.identifier.spage | 11297 | - |
dc.identifier.epage | 11308 | - |
dc.identifier.eissn | 1520-5851 | - |
dc.identifier.isi | WOS:000446542100044 | - |