3D ordered macroporous SmCoO3 perovskite for highly active and selective hydrogen peroxide detection
© 2017 Elsevier Ltd. We reported the direct electrochemical hydrogen peroxide detection on three-dimensionally ordered macroporous SmCoO 3 (3DOM-SmCoO 3 ) perovskite oxide electrode synthesized via a poly (methyl methacrylate) (PMMA) colloidal crystal templating route. The low-cost and simple 3DOM-S...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
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Pergamon
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/66186 |
| _version_ | 1848761259361566720 |
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| author | He, J. Zhou, W. Sunarso, J. Xu, Xiaomin Zhong, Yijun Shao, Zongping Chen, X. Zhu, H. |
| author_facet | He, J. Zhou, W. Sunarso, J. Xu, Xiaomin Zhong, Yijun Shao, Zongping Chen, X. Zhu, H. |
| author_sort | He, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2017 Elsevier Ltd. We reported the direct electrochemical hydrogen peroxide detection on three-dimensionally ordered macroporous SmCoO 3 (3DOM-SmCoO 3 ) perovskite oxide electrode synthesized via a poly (methyl methacrylate) (PMMA) colloidal crystal templating route. The low-cost and simple 3DOM-SmCoO 3 sensor not only overcome the various disadvantages of enzyme- and noble metal-based sensors but also display a superior sensing performance for H 2 O 2 detection. More importantly, using 800 nm PMMA microspheres, a hexagonally ordered macroporous crystalline structure can be created, which features large surface area (20.14 m 2 g -1 ) and large, open, interconnected channels for facile reactants and ions diffusions. The resultant 3DOM-SmCoO 3 synthesized using 800 nm PMMA microspheres template (3D-SC-800) displayed higher sensitivity (715 and 460 µA mM -1 cm -2 ), lower limit of detection (0.004 µM), larger detection linear range (0.1–10,000 µM), and higher selectivity in the presence of interfering species (i.e., glucose, ascorbic acid, dopamine, and uric acid), for H 2 O 2 detection, relative to SmCoO 3 (SC) and SmCoO 3 synthesized using 200 nm PMMA template (3D-SC-200). Our comprehensive electrochemical characterization attributes the superior H 2 O 2 electrooxidation performance of 3D-SC-800 to its fast electron transfer kinetics and diffusion rate. What we demonstrated here bolsters the future opportunity to harness ordered macroporous perovskite oxide-based materials for highly active and selective non-enzymatic H 2 O 2 detection. |
| first_indexed | 2025-11-14T10:28:50Z |
| format | Journal Article |
| id | curtin-20.500.11937-66186 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:28:50Z |
| publishDate | 2018 |
| publisher | Pergamon |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-661862020-06-15T01:57:41Z 3D ordered macroporous SmCoO3 perovskite for highly active and selective hydrogen peroxide detection He, J. Zhou, W. Sunarso, J. Xu, Xiaomin Zhong, Yijun Shao, Zongping Chen, X. Zhu, H. © 2017 Elsevier Ltd. We reported the direct electrochemical hydrogen peroxide detection on three-dimensionally ordered macroporous SmCoO 3 (3DOM-SmCoO 3 ) perovskite oxide electrode synthesized via a poly (methyl methacrylate) (PMMA) colloidal crystal templating route. The low-cost and simple 3DOM-SmCoO 3 sensor not only overcome the various disadvantages of enzyme- and noble metal-based sensors but also display a superior sensing performance for H 2 O 2 detection. More importantly, using 800 nm PMMA microspheres, a hexagonally ordered macroporous crystalline structure can be created, which features large surface area (20.14 m 2 g -1 ) and large, open, interconnected channels for facile reactants and ions diffusions. The resultant 3DOM-SmCoO 3 synthesized using 800 nm PMMA microspheres template (3D-SC-800) displayed higher sensitivity (715 and 460 µA mM -1 cm -2 ), lower limit of detection (0.004 µM), larger detection linear range (0.1–10,000 µM), and higher selectivity in the presence of interfering species (i.e., glucose, ascorbic acid, dopamine, and uric acid), for H 2 O 2 detection, relative to SmCoO 3 (SC) and SmCoO 3 synthesized using 200 nm PMMA template (3D-SC-200). Our comprehensive electrochemical characterization attributes the superior H 2 O 2 electrooxidation performance of 3D-SC-800 to its fast electron transfer kinetics and diffusion rate. What we demonstrated here bolsters the future opportunity to harness ordered macroporous perovskite oxide-based materials for highly active and selective non-enzymatic H 2 O 2 detection. 2018 Journal Article http://hdl.handle.net/20.500.11937/66186 10.1016/j.electacta.2017.12.084 Pergamon restricted |
| spellingShingle | He, J. Zhou, W. Sunarso, J. Xu, Xiaomin Zhong, Yijun Shao, Zongping Chen, X. Zhu, H. 3D ordered macroporous SmCoO3 perovskite for highly active and selective hydrogen peroxide detection |
| title | 3D ordered macroporous SmCoO3 perovskite for highly active and selective hydrogen peroxide detection |
| title_full | 3D ordered macroporous SmCoO3 perovskite for highly active and selective hydrogen peroxide detection |
| title_fullStr | 3D ordered macroporous SmCoO3 perovskite for highly active and selective hydrogen peroxide detection |
| title_full_unstemmed | 3D ordered macroporous SmCoO3 perovskite for highly active and selective hydrogen peroxide detection |
| title_short | 3D ordered macroporous SmCoO3 perovskite for highly active and selective hydrogen peroxide detection |
| title_sort | 3d ordered macroporous smcoo3 perovskite for highly active and selective hydrogen peroxide detection |
| url | http://hdl.handle.net/20.500.11937/66186 |