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- Publisher Website: 10.1016/j.chemosphere.2020.128648
- Scopus: eid_2-s2.0-85093917404
- PMID: 33268100
- WOS: WOS:000631734500039
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Article: Novel Fenton process of Co-catalyst Co9 S8 quantum dots for highly efficient removal of organic pollutants
Title | Novel Fenton process of Co-catalyst Co<inf>9</inf>S<inf>8</inf> quantum dots for highly efficient removal of organic pollutants |
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Authors | |
Keywords | Co-catalytic Co S QDs 9 8 Fenton process Recovery Transition metal disulfides |
Issue Date | 2021 |
Citation | Chemosphere, 2021, v. 270, article no. 128648 How to Cite? |
Abstract | Advanced oxidation processes (AOPs) have been widely accepted as an efficient and promising strategy for treating organic pollutants, is mainly dominated by hydroxyl radicals (•OH); however, its further practical application has been hindered by its low decomposition rate of H2O2. Hence, for the first time, we propose an eco-friendly and facile synthesis methodology synthesize water-soluble Co9S8 quantum dots (QDs) derived from commercial cobalt disulfide (CoS2), which can serve as excellent co-catalysts to dramatically enhance the decomposition rate of H2O2. It is demonstrated that the conversion rate of H2O2 into •OH is ca. 80.02% promoted by Co9S8 QDs, whereas the conventional Fenton process is ca. 34.9%. The result shows that unsaturated edged S atoms on the surface of Co9S8 play a pivotal role in this enhancement, where the number of protons will react with sulfur atoms to form H2S and expose reductive metallic active sites to accelerate the Fe3+/Fe2+ conversion. In addition, to tackle the issue for difficult recovery of liquid quantum dots, the magnetic Co9S8 QDs/Fe3O4 nanoparticles are particularly synthesized, which show excellent performance for degradation of 20 mg/L Rhodamine B (RhB). Moreover, the TOC degradation rate can remain stable at 80% even after five cycles. It is expected that this work will provide a new pathway of thinking in the Fenton process and impulse the usage of liquid quantum dots in practical AOPs application. |
Persistent Identifier | http://hdl.handle.net/10722/341289 |
ISSN | 2023 Impact Factor: 8.1 2023 SCImago Journal Rankings: 1.806 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Dong, Chencheng | - |
dc.contributor.author | Yi, Qiuying | - |
dc.contributor.author | Shen, Bin | - |
dc.contributor.author | Xing, Mingyang | - |
dc.contributor.author | Zhang, Jinlong | - |
dc.date.accessioned | 2024-03-13T08:41:39Z | - |
dc.date.available | 2024-03-13T08:41:39Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Chemosphere, 2021, v. 270, article no. 128648 | - |
dc.identifier.issn | 0045-6535 | - |
dc.identifier.uri | http://hdl.handle.net/10722/341289 | - |
dc.description.abstract | Advanced oxidation processes (AOPs) have been widely accepted as an efficient and promising strategy for treating organic pollutants, is mainly dominated by hydroxyl radicals (•OH); however, its further practical application has been hindered by its low decomposition rate of H2O2. Hence, for the first time, we propose an eco-friendly and facile synthesis methodology synthesize water-soluble Co9S8 quantum dots (QDs) derived from commercial cobalt disulfide (CoS2), which can serve as excellent co-catalysts to dramatically enhance the decomposition rate of H2O2. It is demonstrated that the conversion rate of H2O2 into •OH is ca. 80.02% promoted by Co9S8 QDs, whereas the conventional Fenton process is ca. 34.9%. The result shows that unsaturated edged S atoms on the surface of Co9S8 play a pivotal role in this enhancement, where the number of protons will react with sulfur atoms to form H2S and expose reductive metallic active sites to accelerate the Fe3+/Fe2+ conversion. In addition, to tackle the issue for difficult recovery of liquid quantum dots, the magnetic Co9S8 QDs/Fe3O4 nanoparticles are particularly synthesized, which show excellent performance for degradation of 20 mg/L Rhodamine B (RhB). Moreover, the TOC degradation rate can remain stable at 80% even after five cycles. It is expected that this work will provide a new pathway of thinking in the Fenton process and impulse the usage of liquid quantum dots in practical AOPs application. | - |
dc.language | eng | - |
dc.relation.ispartof | Chemosphere | - |
dc.subject | Co-catalytic | - |
dc.subject | Co S QDs 9 8 | - |
dc.subject | Fenton process | - |
dc.subject | Recovery | - |
dc.subject | Transition metal disulfides | - |
dc.title | Novel Fenton process of Co-catalyst Co<inf>9</inf>S<inf>8</inf> quantum dots for highly efficient removal of organic pollutants | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.chemosphere.2020.128648 | - |
dc.identifier.pmid | 33268100 | - |
dc.identifier.scopus | eid_2-s2.0-85093917404 | - |
dc.identifier.volume | 270 | - |
dc.identifier.spage | article no. 128648 | - |
dc.identifier.epage | article no. 128648 | - |
dc.identifier.eissn | 1879-1298 | - |
dc.identifier.isi | WOS:000631734500039 | - |