Heterostructure-induced light absorption and charge-transfer optimization of a TiO₂ photoanode for photoelectrochemical water splitting
Rutile titanium dioxide (TiO2) exhibits excellent photoelectrochemical properties but limited photocatalytic performance due to its large band gap and fast electron-hole recombination. Here, we report a composite catalyst of NiTiO3 nanoparticle-coated TiO2 nanorod arrays (NiTiO3/TiO2 NRAs) via an el...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/162423 |
| _version_ | 1811695623513047040 |
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| author | Yi, Qinghua Cong, Shan Wang, Hao Zhou, Xinjie Chen, Jianmei Li, Ke Liu, Yushen Lee, Jong-Min |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Yi, Qinghua Cong, Shan Wang, Hao Zhou, Xinjie Chen, Jianmei Li, Ke Liu, Yushen Lee, Jong-Min |
| author_sort | Yi, Qinghua |
| collection | NTU |
| description | Rutile titanium dioxide (TiO2) exhibits excellent photoelectrochemical properties but limited photocatalytic performance due to its large band gap and fast electron-hole recombination. Here, we report a composite catalyst of NiTiO3 nanoparticle-coated TiO2 nanorod arrays (NiTiO3/TiO2 NRAs) via an electrostatic assembly strategy. The NiTiO3/TiO2 heterostructure endows an enlarged absorption range and enhanced electron-hole separation efficiency. When being used as an electrode in photoelectrochemical water splitting, it achieves the highest photocurrent density of 1.94 mA cm-2 at 1.0 V versus reversible hydrogen electrode, which is 3.74 times higher than the photocurrent density of pristine rutile TiO2 NRAs (0.51 mA cm-2). The heterostructure engineering strategy is demonstrated to enhance the photoelectrochemical performance, which can be extended to optimize various semiconductor photocatalysts. |
| first_indexed | 2024-10-01T07:26:25Z |
| format | Journal Article |
| id | ntu-10356/162423 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:26:25Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1624232022-10-18T07:50:02Z Heterostructure-induced light absorption and charge-transfer optimization of a TiO₂ photoanode for photoelectrochemical water splitting Yi, Qinghua Cong, Shan Wang, Hao Zhou, Xinjie Chen, Jianmei Li, Ke Liu, Yushen Lee, Jong-Min School of Chemical and Biomedical Engineering Engineering::Chemical technology Photoelectrochemical Heterostructure Rutile titanium dioxide (TiO2) exhibits excellent photoelectrochemical properties but limited photocatalytic performance due to its large band gap and fast electron-hole recombination. Here, we report a composite catalyst of NiTiO3 nanoparticle-coated TiO2 nanorod arrays (NiTiO3/TiO2 NRAs) via an electrostatic assembly strategy. The NiTiO3/TiO2 heterostructure endows an enlarged absorption range and enhanced electron-hole separation efficiency. When being used as an electrode in photoelectrochemical water splitting, it achieves the highest photocurrent density of 1.94 mA cm-2 at 1.0 V versus reversible hydrogen electrode, which is 3.74 times higher than the photocurrent density of pristine rutile TiO2 NRAs (0.51 mA cm-2). The heterostructure engineering strategy is demonstrated to enhance the photoelectrochemical performance, which can be extended to optimize various semiconductor photocatalysts. This research was supported by the National Natural Science Foundation of China (Grant No. 62005027, 62074019, 62174016, and K121402819), the Natural Science Foundation of Jiangsu Province (Grant No. BK20181037), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 20KJB510016), and the Suzhou Science and Technology Project (Grant No. SZS2020313). 2022-10-18T07:50:02Z 2022-10-18T07:50:02Z 2021 Journal Article Yi, Q., Cong, S., Wang, H., Zhou, X., Chen, J., Li, K., Liu, Y. & Lee, J. (2021). Heterostructure-induced light absorption and charge-transfer optimization of a TiO₂ photoanode for photoelectrochemical water splitting. ACS Applied Energy Materials, 4(12), 14440-14446. https://dx.doi.org/10.1021/acsaem.1c03112 2574-0962 https://hdl.handle.net/10356/162423 10.1021/acsaem.1c03112 2-s2.0-85121657698 12 4 14440 14446 en ACS Applied Energy Materials © 2021 American Chemical Society. All rights reserved. |
| spellingShingle | Engineering::Chemical technology Photoelectrochemical Heterostructure Yi, Qinghua Cong, Shan Wang, Hao Zhou, Xinjie Chen, Jianmei Li, Ke Liu, Yushen Lee, Jong-Min Heterostructure-induced light absorption and charge-transfer optimization of a TiO₂ photoanode for photoelectrochemical water splitting |
| title | Heterostructure-induced light absorption and charge-transfer optimization of a TiO₂ photoanode for photoelectrochemical water splitting |
| title_full | Heterostructure-induced light absorption and charge-transfer optimization of a TiO₂ photoanode for photoelectrochemical water splitting |
| title_fullStr | Heterostructure-induced light absorption and charge-transfer optimization of a TiO₂ photoanode for photoelectrochemical water splitting |
| title_full_unstemmed | Heterostructure-induced light absorption and charge-transfer optimization of a TiO₂ photoanode for photoelectrochemical water splitting |
| title_short | Heterostructure-induced light absorption and charge-transfer optimization of a TiO₂ photoanode for photoelectrochemical water splitting |
| title_sort | heterostructure induced light absorption and charge transfer optimization of a tio₂ photoanode for photoelectrochemical water splitting |
| topic | Engineering::Chemical technology Photoelectrochemical Heterostructure |
| url | https://hdl.handle.net/10356/162423 |
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