Gradient tungsten-doped Bi3TiNbO9 ferroelectric photocatalysts with additional built-in electric field for efficient overall water splitting
Abstract Bi3TiNbO9, a layered ferroelectric photocatalyst, exhibits great potential for overall water splitting through efficient intralayer separation of photogenerated carriers motivated by a depolarization field along the in-plane a-axis. However, the poor interlayer transport of carriers along t...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-12-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-43837-4 |
| _version_ | 1797414742749347840 |
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| author | Jie Huang Yuyang Kang Jianan Liu Tingting Yao Jianhang Qiu Peipei Du Biaohong Huang Weijin Hu Yan Liang Tengfeng Xie Chunlin Chen Li-Chang Yin Lianzhou Wang Hui-Ming Cheng Gang Liu |
| author_facet | Jie Huang Yuyang Kang Jianan Liu Tingting Yao Jianhang Qiu Peipei Du Biaohong Huang Weijin Hu Yan Liang Tengfeng Xie Chunlin Chen Li-Chang Yin Lianzhou Wang Hui-Ming Cheng Gang Liu |
| author_sort | Jie Huang |
| collection | DOAJ |
| description | Abstract Bi3TiNbO9, a layered ferroelectric photocatalyst, exhibits great potential for overall water splitting through efficient intralayer separation of photogenerated carriers motivated by a depolarization field along the in-plane a-axis. However, the poor interlayer transport of carriers along the out-of-plane c-axis, caused by the significant potential barrier between layers, leads to a high probability of carrier recombination and consequently results in low photocatalytic activity. Here, we have developed an efficient photocatalyst consisting of Bi3TiNbO9 nanosheets with a gradient tungsten (W) doping along the c-axis. This results in the generation of an additional electric field along the c-axis and simultaneously enhances the magnitude of depolarization field within the layers along the a-axis due to strengthened structural distortion. The combination of the built-in field along the c-axis and polarization along the a-axis can effectively facilitate the anisotropic migration of photogenerated electrons and holes to the basal {001} surface and lateral {110} surface of the nanosheets, respectively, enabling desirable spatial separation of carriers. Hence, the W-doped Bi3TiNbO9 ferroelectric photocatalyst with Rh/Cr2O3 cocatalyst achieves an efficient and durable overall water splitting feature, thereby providing an effective pathway for designing excellent layered ferroelectric photocatalysts. |
| first_indexed | 2024-03-09T05:37:58Z |
| format | Article |
| id | doaj.art-b3c147da8d6f405b8172c7bbc4b8920e |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-09T05:37:58Z |
| publishDate | 2023-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-b3c147da8d6f405b8172c7bbc4b8920e2023-12-03T12:27:18ZengNature PortfolioNature Communications2041-17232023-12-0114111010.1038/s41467-023-43837-4Gradient tungsten-doped Bi3TiNbO9 ferroelectric photocatalysts with additional built-in electric field for efficient overall water splittingJie Huang0Yuyang Kang1Jianan Liu2Tingting Yao3Jianhang Qiu4Peipei Du5Biaohong Huang6Weijin Hu7Yan Liang8Tengfeng Xie9Chunlin Chen10Li-Chang Yin11Lianzhou Wang12Hui-Ming Cheng13Gang Liu14Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesNational Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing UniversityShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesCollege of Chemistry, Jilin UniversityShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesNanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of QueenslandShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesAbstract Bi3TiNbO9, a layered ferroelectric photocatalyst, exhibits great potential for overall water splitting through efficient intralayer separation of photogenerated carriers motivated by a depolarization field along the in-plane a-axis. However, the poor interlayer transport of carriers along the out-of-plane c-axis, caused by the significant potential barrier between layers, leads to a high probability of carrier recombination and consequently results in low photocatalytic activity. Here, we have developed an efficient photocatalyst consisting of Bi3TiNbO9 nanosheets with a gradient tungsten (W) doping along the c-axis. This results in the generation of an additional electric field along the c-axis and simultaneously enhances the magnitude of depolarization field within the layers along the a-axis due to strengthened structural distortion. The combination of the built-in field along the c-axis and polarization along the a-axis can effectively facilitate the anisotropic migration of photogenerated electrons and holes to the basal {001} surface and lateral {110} surface of the nanosheets, respectively, enabling desirable spatial separation of carriers. Hence, the W-doped Bi3TiNbO9 ferroelectric photocatalyst with Rh/Cr2O3 cocatalyst achieves an efficient and durable overall water splitting feature, thereby providing an effective pathway for designing excellent layered ferroelectric photocatalysts.https://doi.org/10.1038/s41467-023-43837-4 |
| spellingShingle | Jie Huang Yuyang Kang Jianan Liu Tingting Yao Jianhang Qiu Peipei Du Biaohong Huang Weijin Hu Yan Liang Tengfeng Xie Chunlin Chen Li-Chang Yin Lianzhou Wang Hui-Ming Cheng Gang Liu Gradient tungsten-doped Bi3TiNbO9 ferroelectric photocatalysts with additional built-in electric field for efficient overall water splitting Nature Communications |
| title | Gradient tungsten-doped Bi3TiNbO9 ferroelectric photocatalysts with additional built-in electric field for efficient overall water splitting |
| title_full | Gradient tungsten-doped Bi3TiNbO9 ferroelectric photocatalysts with additional built-in electric field for efficient overall water splitting |
| title_fullStr | Gradient tungsten-doped Bi3TiNbO9 ferroelectric photocatalysts with additional built-in electric field for efficient overall water splitting |
| title_full_unstemmed | Gradient tungsten-doped Bi3TiNbO9 ferroelectric photocatalysts with additional built-in electric field for efficient overall water splitting |
| title_short | Gradient tungsten-doped Bi3TiNbO9 ferroelectric photocatalysts with additional built-in electric field for efficient overall water splitting |
| title_sort | gradient tungsten doped bi3tinbo9 ferroelectric photocatalysts with additional built in electric field for efficient overall water splitting |
| url | https://doi.org/10.1038/s41467-023-43837-4 |
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