Integration of single-atom catalyst with Z-scheme heterojunction for cascade charge transfer enabling highly efficient piezo-photocatalysis
Piezo-assisted photocatalysis (namely, piezo-photocatalysis), which utilizes mechanical energy to modulate spatial and energy distribution of photogenerated charge carriers, presents a promising strategy for molecule activation and reactive oxygen species (ROS) generation toward applications such as...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/171560 |
| _version_ | 1826114962980864000 |
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| author | Jiang, Wenbin Zhu, Hui Yang, Jing Low, Beverly Qian Ling Wu, Wen-Ya Chen, Mingxi Ma, Jun Long, Ran Low, Jingxiang Zhu, Houjuan Heng, Jerry Zhi Xiong Tang, Karen Yuanting Chai, Casandra Hui Teng Lin, Ming Zhu, Qiang Zhang, Yong-Wei Chi, Dongzhi Li, Zibiao Loh, Xian Jun Xiong, Yujie Ye, Enyi |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Jiang, Wenbin Zhu, Hui Yang, Jing Low, Beverly Qian Ling Wu, Wen-Ya Chen, Mingxi Ma, Jun Long, Ran Low, Jingxiang Zhu, Houjuan Heng, Jerry Zhi Xiong Tang, Karen Yuanting Chai, Casandra Hui Teng Lin, Ming Zhu, Qiang Zhang, Yong-Wei Chi, Dongzhi Li, Zibiao Loh, Xian Jun Xiong, Yujie Ye, Enyi |
| author_sort | Jiang, Wenbin |
| collection | NTU |
| description | Piezo-assisted photocatalysis (namely, piezo-photocatalysis), which utilizes mechanical energy to modulate spatial and energy distribution of photogenerated charge carriers, presents a promising strategy for molecule activation and reactive oxygen species (ROS) generation toward applications such as environmental remediation. However, similarly to photocatalysis, piezo-photocatalysis also suffers from inferior charge separation and utilization efficiency. Herein, a Z-scheme heterojunction composed of single Ag atoms-anchored polymeric carbon nitride (Ag-PCN) and SnO2- x is developed for efficient charge carrier transfer/separation both within the catalyst and between the catalyst and surface oxygen molecules (O2 ). As revealed by charge dynamics analysis and theoretical simulations, the synergy between the single Ag atoms and the Z-scheme heterojunction initiates a cascade electron transfer from SnO2- x to Ag-PCN and then to O2 adsorbed on Ag. With ultrasound irradiation, the polarization field generated within the piezoelectric hybrid further accelerates charge transfer and regulates the O2 activation pathway. As a result, the Ag-PCN/SnO2- x catalyst efficiently activates O2 into ·O2 - , ·OH, and H2 O2 under co-excitation of visible light and ultrasound, which are consequently utilized to trigger aerobic degradation of refractory antibiotic pollutants. This work provides a promising strategy to maneuver charge transfer dynamics for efficient piezo-photocatalysis by integrating single-atom catalysts (SACs) with Z-scheme heterojunction. |
| first_indexed | 2024-10-01T03:47:46Z |
| format | Journal Article |
| id | ntu-10356/171560 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:47:46Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1715602023-11-03T15:40:30Z Integration of single-atom catalyst with Z-scheme heterojunction for cascade charge transfer enabling highly efficient piezo-photocatalysis Jiang, Wenbin Zhu, Hui Yang, Jing Low, Beverly Qian Ling Wu, Wen-Ya Chen, Mingxi Ma, Jun Long, Ran Low, Jingxiang Zhu, Houjuan Heng, Jerry Zhi Xiong Tang, Karen Yuanting Chai, Casandra Hui Teng Lin, Ming Zhu, Qiang Zhang, Yong-Wei Chi, Dongzhi Li, Zibiao Loh, Xian Jun Xiong, Yujie Ye, Enyi School of Electrical and Electronic Engineering Engineering::Materials Cascade Charge Transfer Molecular Oxygen Activation Piezo-assisted photocatalysis (namely, piezo-photocatalysis), which utilizes mechanical energy to modulate spatial and energy distribution of photogenerated charge carriers, presents a promising strategy for molecule activation and reactive oxygen species (ROS) generation toward applications such as environmental remediation. However, similarly to photocatalysis, piezo-photocatalysis also suffers from inferior charge separation and utilization efficiency. Herein, a Z-scheme heterojunction composed of single Ag atoms-anchored polymeric carbon nitride (Ag-PCN) and SnO2- x is developed for efficient charge carrier transfer/separation both within the catalyst and between the catalyst and surface oxygen molecules (O2 ). As revealed by charge dynamics analysis and theoretical simulations, the synergy between the single Ag atoms and the Z-scheme heterojunction initiates a cascade electron transfer from SnO2- x to Ag-PCN and then to O2 adsorbed on Ag. With ultrasound irradiation, the polarization field generated within the piezoelectric hybrid further accelerates charge transfer and regulates the O2 activation pathway. As a result, the Ag-PCN/SnO2- x catalyst efficiently activates O2 into ·O2 - , ·OH, and H2 O2 under co-excitation of visible light and ultrasound, which are consequently utilized to trigger aerobic degradation of refractory antibiotic pollutants. This work provides a promising strategy to maneuver charge transfer dynamics for efficient piezo-photocatalysis by integrating single-atom catalysts (SACs) with Z-scheme heterojunction. Agency for Science, Technology and Research (A*STAR) National Research Foundation (NRF) Published version The authors acknowledge the funding support from the Central Research Fund from the Agency for Science, Technology and Research (A*STAR), Singapore, National Research Foundation of Singapore (Grant No. NRF-CRP24-2020-0002) and Natural Science Foundation of China (21725102). 2023-10-31T01:20:56Z 2023-10-31T01:20:56Z 2023 Journal Article Jiang, W., Zhu, H., Yang, J., Low, B. Q. L., Wu, W., Chen, M., Ma, J., Long, R., Low, J., Zhu, H., Heng, J. Z. X., Tang, K. Y., Chai, C. H. T., Lin, M., Zhu, Q., Zhang, Y., Chi, D., Li, Z., Loh, X. J., ...Ye, E. (2023). Integration of single-atom catalyst with Z-scheme heterojunction for cascade charge transfer enabling highly efficient piezo-photocatalysis. Advanced Science, 10(28), 2303448-. https://dx.doi.org/10.1002/advs.202303448 2198-3844 https://hdl.handle.net/10356/171560 10.1002/advs.202303448 37544890 2-s2.0-85166747679 28 10 2303448 en NRF-CRP24-2020-0002 Advanced Science © 2023 The Authors. Advanced Science published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. application/pdf |
| spellingShingle | Engineering::Materials Cascade Charge Transfer Molecular Oxygen Activation Jiang, Wenbin Zhu, Hui Yang, Jing Low, Beverly Qian Ling Wu, Wen-Ya Chen, Mingxi Ma, Jun Long, Ran Low, Jingxiang Zhu, Houjuan Heng, Jerry Zhi Xiong Tang, Karen Yuanting Chai, Casandra Hui Teng Lin, Ming Zhu, Qiang Zhang, Yong-Wei Chi, Dongzhi Li, Zibiao Loh, Xian Jun Xiong, Yujie Ye, Enyi Integration of single-atom catalyst with Z-scheme heterojunction for cascade charge transfer enabling highly efficient piezo-photocatalysis |
| title | Integration of single-atom catalyst with Z-scheme heterojunction for cascade charge transfer enabling highly efficient piezo-photocatalysis |
| title_full | Integration of single-atom catalyst with Z-scheme heterojunction for cascade charge transfer enabling highly efficient piezo-photocatalysis |
| title_fullStr | Integration of single-atom catalyst with Z-scheme heterojunction for cascade charge transfer enabling highly efficient piezo-photocatalysis |
| title_full_unstemmed | Integration of single-atom catalyst with Z-scheme heterojunction for cascade charge transfer enabling highly efficient piezo-photocatalysis |
| title_short | Integration of single-atom catalyst with Z-scheme heterojunction for cascade charge transfer enabling highly efficient piezo-photocatalysis |
| title_sort | integration of single atom catalyst with z scheme heterojunction for cascade charge transfer enabling highly efficient piezo photocatalysis |
| topic | Engineering::Materials Cascade Charge Transfer Molecular Oxygen Activation |
| url | https://hdl.handle.net/10356/171560 |
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