Nanostructured Co-Mn containing perovskites for degradation of pollutants: Insight into the activity and stability
© 2018 Elsevier B.V. The efficient oxidative removal of persistent organic components in wastewater relies on low-cost heterogeneous catalysts that offer high catalytic activity, stability, and recyclability. Here, we designed a series of nanostructured Co-Mn containing perovskite catalysts, LaCo 1-...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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Elsevier BV
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/65806 |
| _version_ | 1848761207960371200 |
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| author | Miao, J. Sunarso, J. Duan, Xiaoguang Zhou, W. Wang, Shaobin Shao, Zongping |
| author_facet | Miao, J. Sunarso, J. Duan, Xiaoguang Zhou, W. Wang, Shaobin Shao, Zongping |
| author_sort | Miao, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 Elsevier B.V. The efficient oxidative removal of persistent organic components in wastewater relies on low-cost heterogeneous catalysts that offer high catalytic activity, stability, and recyclability. Here, we designed a series of nanostructured Co-Mn containing perovskite catalysts, LaCo 1-x Mn x O 3+d (LCM, x = 0, 0.3, 0.5, 0.7, and 1.0), with over-stoichiometric oxygen (d > 0) to show superior catalytic activity for the degradation of a variety of persistent aqueous organic pollutants by activating peroxymonosulfate (PMS). The nature of LCM for catalysis was comprehensively investigated. A “volcano-shaped” correlation was observed between the catalytic activity and electron filling (e g ) of Co in LCM. Among these compounds, LaCo 0.5 Mn 0.5 O 3+d (LCM55) exhibited an excellent activity with e g = 1.27. The high interstitial oxygen ion diffusion rate (D O 2- = 1.58 ± 0.01 × 10 -13 cm 2 s -1 ) of LCM55 also contributes to its catalytic activity. The enhanced stability of LCM55 can be ascribed to its stronger relative acidity (3.22). Moreover, an increased solution pH (pH = 7) generated a faster organic degradation rate and a decrease in metal leaching (0.004 mM) for LCM55 perovskite, justifying it as a potential material for environmental remediation. |
| first_indexed | 2025-11-14T10:28:01Z |
| format | Journal Article |
| id | curtin-20.500.11937-65806 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:28:01Z |
| publishDate | 2018 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-658062018-02-19T08:06:30Z Nanostructured Co-Mn containing perovskites for degradation of pollutants: Insight into the activity and stability Miao, J. Sunarso, J. Duan, Xiaoguang Zhou, W. Wang, Shaobin Shao, Zongping © 2018 Elsevier B.V. The efficient oxidative removal of persistent organic components in wastewater relies on low-cost heterogeneous catalysts that offer high catalytic activity, stability, and recyclability. Here, we designed a series of nanostructured Co-Mn containing perovskite catalysts, LaCo 1-x Mn x O 3+d (LCM, x = 0, 0.3, 0.5, 0.7, and 1.0), with over-stoichiometric oxygen (d > 0) to show superior catalytic activity for the degradation of a variety of persistent aqueous organic pollutants by activating peroxymonosulfate (PMS). The nature of LCM for catalysis was comprehensively investigated. A “volcano-shaped” correlation was observed between the catalytic activity and electron filling (e g ) of Co in LCM. Among these compounds, LaCo 0.5 Mn 0.5 O 3+d (LCM55) exhibited an excellent activity with e g = 1.27. The high interstitial oxygen ion diffusion rate (D O 2- = 1.58 ± 0.01 × 10 -13 cm 2 s -1 ) of LCM55 also contributes to its catalytic activity. The enhanced stability of LCM55 can be ascribed to its stronger relative acidity (3.22). Moreover, an increased solution pH (pH = 7) generated a faster organic degradation rate and a decrease in metal leaching (0.004 mM) for LCM55 perovskite, justifying it as a potential material for environmental remediation. 2018 Journal Article http://hdl.handle.net/20.500.11937/65806 10.1016/j.jhazmat.2018.01.054 Elsevier BV restricted |
| spellingShingle | Miao, J. Sunarso, J. Duan, Xiaoguang Zhou, W. Wang, Shaobin Shao, Zongping Nanostructured Co-Mn containing perovskites for degradation of pollutants: Insight into the activity and stability |
| title | Nanostructured Co-Mn containing perovskites for degradation of pollutants: Insight into the activity and stability |
| title_full | Nanostructured Co-Mn containing perovskites for degradation of pollutants: Insight into the activity and stability |
| title_fullStr | Nanostructured Co-Mn containing perovskites for degradation of pollutants: Insight into the activity and stability |
| title_full_unstemmed | Nanostructured Co-Mn containing perovskites for degradation of pollutants: Insight into the activity and stability |
| title_short | Nanostructured Co-Mn containing perovskites for degradation of pollutants: Insight into the activity and stability |
| title_sort | nanostructured co-mn containing perovskites for degradation of pollutants: insight into the activity and stability |
| url | http://hdl.handle.net/20.500.11937/65806 |