Efficient removal of organic and bacterial pollutants by Ag-La0.8Ca0.2Fe0.94O3-δ perovskite via catalytic peroxymonosulfate activation
© 2018 Elsevier B.V. Removal of toxic organics and bacterial disinfection are important tasks in wastewater treatment. Most heavy metal-based catalysts for degradation of aqueous organic pollutants in heterogeneous Fenton-like processes suffer from the toxicity of leached metals. The present work re...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
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Elsevier BV
2018
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| Online Access: | http://purl.org/au-research/grants/arc/DP150103026 http://hdl.handle.net/20.500.11937/68899 |
| _version_ | 1848761917425844224 |
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| author | Chu, Y. Tan, X. Shen, Zhangfeng Liu, Pengyun Han, Ning Kang, Jian Duan, Xiaoguang Wang, Shaobin Liu, Lihong Liu, Shaomin |
| author_facet | Chu, Y. Tan, X. Shen, Zhangfeng Liu, Pengyun Han, Ning Kang, Jian Duan, Xiaoguang Wang, Shaobin Liu, Lihong Liu, Shaomin |
| author_sort | Chu, Y. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 Elsevier B.V. Removal of toxic organics and bacterial disinfection are important tasks in wastewater treatment. Most heavy metal-based catalysts for degradation of aqueous organic pollutants in heterogeneous Fenton-like processes suffer from the toxicity of leached metals. The present work reports environmentally benign systems for both degradation of organics and bacterial disinfection. Calcium substituted LaFeO 3- d perovskite was demonstrated as an efficient catalyst to activate peroxymonosulfate (PMS) for degradation of phenol, methylene blue and rhodamine 6 G. Compared to LaFeO 3- d and nanocrystal Fe 3 O 4 , the lattice oxygen vacancies in B-site cation-deficient perovskite of La 0.8 Ca 0.2 Fe 0.94 O 3 - d (LaCaFeO 3- d ) particles renders this material a greatly improved catalytic performance. Electron paramagnetic resonance (EPR) suggested that both sulfate (SO 4 [rad]–) and hydroxyl radicals ([rad] OH) played critical roles in the advanced oxidation processes. Moreover, silver doped perovskite (Ag-LaCaFeO 3- d )/PMS successfully inhibited the growth of waterborne pathogen Escherichia coli and Methicillin-resistant Staphylococcus aureus (MRSA) at a lower dose than silver ions, proving a synergetic effect between free radicals and Ag + in killing the bacteria. Therefore, Ag-LaCaFeO 3- d /PMS would be promising for practical wastewater treatment. |
| first_indexed | 2025-11-14T10:39:17Z |
| format | Journal Article |
| id | curtin-20.500.11937-68899 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:39:17Z |
| publishDate | 2018 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-688992022-10-26T07:20:25Z Efficient removal of organic and bacterial pollutants by Ag-La0.8Ca0.2Fe0.94O3-δ perovskite via catalytic peroxymonosulfate activation Chu, Y. Tan, X. Shen, Zhangfeng Liu, Pengyun Han, Ning Kang, Jian Duan, Xiaoguang Wang, Shaobin Liu, Lihong Liu, Shaomin © 2018 Elsevier B.V. Removal of toxic organics and bacterial disinfection are important tasks in wastewater treatment. Most heavy metal-based catalysts for degradation of aqueous organic pollutants in heterogeneous Fenton-like processes suffer from the toxicity of leached metals. The present work reports environmentally benign systems for both degradation of organics and bacterial disinfection. Calcium substituted LaFeO 3- d perovskite was demonstrated as an efficient catalyst to activate peroxymonosulfate (PMS) for degradation of phenol, methylene blue and rhodamine 6 G. Compared to LaFeO 3- d and nanocrystal Fe 3 O 4 , the lattice oxygen vacancies in B-site cation-deficient perovskite of La 0.8 Ca 0.2 Fe 0.94 O 3 - d (LaCaFeO 3- d ) particles renders this material a greatly improved catalytic performance. Electron paramagnetic resonance (EPR) suggested that both sulfate (SO 4 [rad]–) and hydroxyl radicals ([rad] OH) played critical roles in the advanced oxidation processes. Moreover, silver doped perovskite (Ag-LaCaFeO 3- d )/PMS successfully inhibited the growth of waterborne pathogen Escherichia coli and Methicillin-resistant Staphylococcus aureus (MRSA) at a lower dose than silver ions, proving a synergetic effect between free radicals and Ag + in killing the bacteria. Therefore, Ag-LaCaFeO 3- d /PMS would be promising for practical wastewater treatment. 2018 Journal Article http://hdl.handle.net/20.500.11937/68899 10.1016/j.jhazmat.2018.05.044 http://purl.org/au-research/grants/arc/DP150103026 Elsevier BV restricted |
| spellingShingle | Chu, Y. Tan, X. Shen, Zhangfeng Liu, Pengyun Han, Ning Kang, Jian Duan, Xiaoguang Wang, Shaobin Liu, Lihong Liu, Shaomin Efficient removal of organic and bacterial pollutants by Ag-La0.8Ca0.2Fe0.94O3-δ perovskite via catalytic peroxymonosulfate activation |
| title | Efficient removal of organic and bacterial pollutants by Ag-La0.8Ca0.2Fe0.94O3-δ perovskite via catalytic peroxymonosulfate activation |
| title_full | Efficient removal of organic and bacterial pollutants by Ag-La0.8Ca0.2Fe0.94O3-δ perovskite via catalytic peroxymonosulfate activation |
| title_fullStr | Efficient removal of organic and bacterial pollutants by Ag-La0.8Ca0.2Fe0.94O3-δ perovskite via catalytic peroxymonosulfate activation |
| title_full_unstemmed | Efficient removal of organic and bacterial pollutants by Ag-La0.8Ca0.2Fe0.94O3-δ perovskite via catalytic peroxymonosulfate activation |
| title_short | Efficient removal of organic and bacterial pollutants by Ag-La0.8Ca0.2Fe0.94O3-δ perovskite via catalytic peroxymonosulfate activation |
| title_sort | efficient removal of organic and bacterial pollutants by ag-la0.8ca0.2fe0.94o3-δ perovskite via catalytic peroxymonosulfate activation |
| url | http://purl.org/au-research/grants/arc/DP150103026 http://hdl.handle.net/20.500.11937/68899 |