Superstructures with Atomic-Level Arranged Perovskite and Oxide Layers for Advanced Oxidation with an Enhanced Non-Free Radical Pathway
Perovskite-based oxides demonstrate a great catalytic efficiency in advanced oxidation processes (AOPs), where both free and non-free radical pathways may occur. The non-free radical pathway is preferable because it is less affected by the wastewater environment, yet little is known about its origin...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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AMER CHEMICAL SOC
2022
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/DP200103332 http://hdl.handle.net/20.500.11937/91971 |
| _version_ | 1848765609252225024 |
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| author | Yang, L. Jiao, Y. Xu, Xiaomin Pan, Y. Su, Chao Duan, Xiaoguang Sun, Hongqi Liu, Shaomin Wang, Shaobin Shao, Zongping |
| author_facet | Yang, L. Jiao, Y. Xu, Xiaomin Pan, Y. Su, Chao Duan, Xiaoguang Sun, Hongqi Liu, Shaomin Wang, Shaobin Shao, Zongping |
| author_sort | Yang, L. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Perovskite-based oxides demonstrate a great catalytic efficiency in advanced oxidation processes (AOPs), where both free and non-free radical pathways may occur. The non-free radical pathway is preferable because it is less affected by the wastewater environment, yet little is known about its origin. Here, we exploit Ruddlesden-Popper (RP) layered perovskite oxides as an excellent platform for investigating the structure-property relationship for peroxymonosulfate (PMS) activation in AOPs. The atomic-level interaction of the perovskite and rock salt layers in RP oxides stabilizes the transition metals at low valences, causing the formation of abundant lattice oxygen/interstitial oxygen species. Unlike oxygen vacancies in conventional perovskites, which promote free-radical generation, these reactive oxygen species in RP perovskites have high activity and mobility and facilitate the formation of non-free radical singlet oxygen. This singlet oxygen reaction pathway is optimized by tailoring the oxygen species, leading to the discovery of LaSrCo0.8Fe0.2O4 with exceptionally efficient PMS activation. |
| first_indexed | 2025-11-14T11:37:58Z |
| format | Journal Article |
| id | curtin-20.500.11937-91971 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:37:58Z |
| publishDate | 2022 |
| publisher | AMER CHEMICAL SOC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-919712023-06-08T07:25:40Z Superstructures with Atomic-Level Arranged Perovskite and Oxide Layers for Advanced Oxidation with an Enhanced Non-Free Radical Pathway Yang, L. Jiao, Y. Xu, Xiaomin Pan, Y. Su, Chao Duan, Xiaoguang Sun, Hongqi Liu, Shaomin Wang, Shaobin Shao, Zongping Science & Technology Physical Sciences Technology Chemistry, Multidisciplinary Green & Sustainable Science & Technology Engineering, Chemical Chemistry Science & Technology - Other Topics Engineering Ruddlesden-Popper layered perovskite non-free radical pathway reactive oxygen species interstitial oxygen peroxymonosulfate METAL-ORGANIC FRAMEWORKS SINGLET OXYGEN PEROXYMONOSULFATE ACTIVATION HETEROGENEOUS CATALYSTS BISPHENOL-A DEGRADATION PERFORMANCE EVOLUTION PEROXYDISULFATE OFLOXACIN Perovskite-based oxides demonstrate a great catalytic efficiency in advanced oxidation processes (AOPs), where both free and non-free radical pathways may occur. The non-free radical pathway is preferable because it is less affected by the wastewater environment, yet little is known about its origin. Here, we exploit Ruddlesden-Popper (RP) layered perovskite oxides as an excellent platform for investigating the structure-property relationship for peroxymonosulfate (PMS) activation in AOPs. The atomic-level interaction of the perovskite and rock salt layers in RP oxides stabilizes the transition metals at low valences, causing the formation of abundant lattice oxygen/interstitial oxygen species. Unlike oxygen vacancies in conventional perovskites, which promote free-radical generation, these reactive oxygen species in RP perovskites have high activity and mobility and facilitate the formation of non-free radical singlet oxygen. This singlet oxygen reaction pathway is optimized by tailoring the oxygen species, leading to the discovery of LaSrCo0.8Fe0.2O4 with exceptionally efficient PMS activation. 2022 Journal Article http://hdl.handle.net/20.500.11937/91971 10.1021/acssuschemeng.1c07605 English http://purl.org/au-research/grants/arc/DP200103332 http://purl.org/au-research/grants/arc/DP200103315 AMER CHEMICAL SOC restricted |
| spellingShingle | Science & Technology Physical Sciences Technology Chemistry, Multidisciplinary Green & Sustainable Science & Technology Engineering, Chemical Chemistry Science & Technology - Other Topics Engineering Ruddlesden-Popper layered perovskite non-free radical pathway reactive oxygen species interstitial oxygen peroxymonosulfate METAL-ORGANIC FRAMEWORKS SINGLET OXYGEN PEROXYMONOSULFATE ACTIVATION HETEROGENEOUS CATALYSTS BISPHENOL-A DEGRADATION PERFORMANCE EVOLUTION PEROXYDISULFATE OFLOXACIN Yang, L. Jiao, Y. Xu, Xiaomin Pan, Y. Su, Chao Duan, Xiaoguang Sun, Hongqi Liu, Shaomin Wang, Shaobin Shao, Zongping Superstructures with Atomic-Level Arranged Perovskite and Oxide Layers for Advanced Oxidation with an Enhanced Non-Free Radical Pathway |
| title | Superstructures with Atomic-Level Arranged Perovskite and Oxide Layers for Advanced Oxidation with an Enhanced Non-Free Radical Pathway |
| title_full | Superstructures with Atomic-Level Arranged Perovskite and Oxide Layers for Advanced Oxidation with an Enhanced Non-Free Radical Pathway |
| title_fullStr | Superstructures with Atomic-Level Arranged Perovskite and Oxide Layers for Advanced Oxidation with an Enhanced Non-Free Radical Pathway |
| title_full_unstemmed | Superstructures with Atomic-Level Arranged Perovskite and Oxide Layers for Advanced Oxidation with an Enhanced Non-Free Radical Pathway |
| title_short | Superstructures with Atomic-Level Arranged Perovskite and Oxide Layers for Advanced Oxidation with an Enhanced Non-Free Radical Pathway |
| title_sort | superstructures with atomic-level arranged perovskite and oxide layers for advanced oxidation with an enhanced non-free radical pathway |
| topic | Science & Technology Physical Sciences Technology Chemistry, Multidisciplinary Green & Sustainable Science & Technology Engineering, Chemical Chemistry Science & Technology - Other Topics Engineering Ruddlesden-Popper layered perovskite non-free radical pathway reactive oxygen species interstitial oxygen peroxymonosulfate METAL-ORGANIC FRAMEWORKS SINGLET OXYGEN PEROXYMONOSULFATE ACTIVATION HETEROGENEOUS CATALYSTS BISPHENOL-A DEGRADATION PERFORMANCE EVOLUTION PEROXYDISULFATE OFLOXACIN |
| url | http://purl.org/au-research/grants/arc/DP200103332 http://purl.org/au-research/grants/arc/DP200103332 http://hdl.handle.net/20.500.11937/91971 |