An intrinsic descriptor of perovskite cobaltites for catalytic peroxymonosulfate activation toward water remediation
A series of strontium cobaltite perovskite oxides with various dopants (SrCo0.95M0.05O3-δ, M=Fe, Sc, Co, Zn, Gd) are designed for catalytic peroxymonosulfate (PMS) activation to degrade aqueous organic pollutants and the correlations between their crystalline structure and surface properties to cata...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
ELSEVIER
2023
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/DP180103861 http://hdl.handle.net/20.500.11937/96008 |
| Summary: | A series of strontium cobaltite perovskite oxides with various dopants (SrCo0.95M0.05O3-δ, M=Fe, Sc, Co, Zn, Gd) are designed for catalytic peroxymonosulfate (PMS) activation to degrade aqueous organic pollutants and the correlations between their crystalline structure and surface properties to catalytic activity were comprehensively investigated. SrCo0.95M0.05O3-δ displays three crystalline structures depending on the dopant metals and exhibits different catalytic activities. Among the structures and properties, Co-O bond length significantly affects the lattice oxygen diffusivity and Co2+/Co3+ redox capacity, governing the overall PMS activation, and is suggested as a descriptor for PMS activation. This study provides new insight to the reaction pathways and the structure-activity correlation for new design of effective perovskite oxides for PMS-based oxidation process toward wastewater treatment and other catalytic processes. |
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