Balancing the piezoelectric coefficient and carrier concentration of Bi2WO6−x for ultrahigh piezocatalysis
Balancing the piezoelectric coefficient and carrier concentration of materials is key in the field of piezocatalysis. In this work, Bi2WO6 material with both piezoelectric and semiconductor properties was chosen as a model material. A one-step ethylene glycol (EG)-assisted solvothermal method was us...
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2024-11-01
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| Series: | Journal of Advanced Ceramics |
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| Online Access: | https://www.sciopen.com/article/10.26599/JAC.2024.9220970 |
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| author | Ying Wang Xiaoli Xu Lingbo Xiao Lutao Li Qiuhua Xu Zhenhai Wen Laishun Qin Yanmin Jia Dong-Liang Peng Wanping Chen Da Chen |
| author_facet | Ying Wang Xiaoli Xu Lingbo Xiao Lutao Li Qiuhua Xu Zhenhai Wen Laishun Qin Yanmin Jia Dong-Liang Peng Wanping Chen Da Chen |
| author_sort | Ying Wang |
| collection | DOAJ |
| description | Balancing the piezoelectric coefficient and carrier concentration of materials is key in the field of piezocatalysis. In this work, Bi2WO6 material with both piezoelectric and semiconductor properties was chosen as a model material. A one-step ethylene glycol (EG)-assisted solvothermal method was used to synthesize Bi2WO6 with oxygen vacancies. By controlling the solvothermal time and temperature, the oxygen vacancy concentration (COV) was regulated. As COV increases, the piezoelectric coefficient decreases, the carrier concentration increases, and the hydrogen production rate first increases but then decreases. When COV reaches 1.45×1012 spins·mg−1, the corresponding piezoelectric coefficient and carrier concentration are 13.9 pm·V−1 and 2.90×1020 cm−3, respectively. The optimal hydrogen production rate per power of 2.21 μmol·g−1·h−1·W−1 is equivalent to or even better than that of most reported piezocatalysts. The piezoelectric coefficient and carrier concentration, as two factors, jointly determine the piezocatalytic performance. The findings of this research can provide important and deep-seated insights for better piezocatalysts in the future. |
| format | Article |
| id | doaj-art-d2ae7e45d11b4e5a815f30bacbbb9566 |
| institution | DOAJ |
| issn | 2226-4108 2227-8508 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj-art-d2ae7e45d11b4e5a815f30bacbbb95662025-08-20T02:50:44ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082024-11-0113111737174710.26599/JAC.2024.9220970Balancing the piezoelectric coefficient and carrier concentration of Bi2WO6−x for ultrahigh piezocatalysisYing Wang0Xiaoli Xu1Lingbo Xiao2Lutao Li3Qiuhua Xu4Zhenhai Wen5Laishun Qin6Yanmin Jia7Dong-Liang Peng8Wanping Chen9Da Chen10College of Materials and Chemistry, China Jiliang University, Hangzhou 310018, ChinaCollege of Materials and Chemistry, China Jiliang University, Hangzhou 310018, ChinaDepartment of Physics, Zhejiang University of Science and Technology, Hangzhou 310008, ChinaJiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, ChinaKey Laboratory of Jiangxi Province for Persistent Pollutants Control, National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, ChinaKey Laboratory of Jiangxi Province for Persistent Pollutants Control, National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, ChinaCollege of Materials and Chemistry, China Jiliang University, Hangzhou 310018, ChinaSchool of Physics and Information Technology, Shaanxi Normal University, Xi’an 710121, ChinaState Key Laboratory of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen 361005, ChinaSchool of Physics and Technology, Wuhan University, Wuhan 430072, ChinaCollege of Materials and Chemistry, China Jiliang University, Hangzhou 310018, ChinaBalancing the piezoelectric coefficient and carrier concentration of materials is key in the field of piezocatalysis. In this work, Bi2WO6 material with both piezoelectric and semiconductor properties was chosen as a model material. A one-step ethylene glycol (EG)-assisted solvothermal method was used to synthesize Bi2WO6 with oxygen vacancies. By controlling the solvothermal time and temperature, the oxygen vacancy concentration (COV) was regulated. As COV increases, the piezoelectric coefficient decreases, the carrier concentration increases, and the hydrogen production rate first increases but then decreases. When COV reaches 1.45×1012 spins·mg−1, the corresponding piezoelectric coefficient and carrier concentration are 13.9 pm·V−1 and 2.90×1020 cm−3, respectively. The optimal hydrogen production rate per power of 2.21 μmol·g−1·h−1·W−1 is equivalent to or even better than that of most reported piezocatalysts. The piezoelectric coefficient and carrier concentration, as two factors, jointly determine the piezocatalytic performance. The findings of this research can provide important and deep-seated insights for better piezocatalysts in the future.https://www.sciopen.com/article/10.26599/JAC.2024.9220970piezocatalysisoxygen vacancycarrier concentrationpiezoelectric coefficienthydrogen evolution |
| spellingShingle | Ying Wang Xiaoli Xu Lingbo Xiao Lutao Li Qiuhua Xu Zhenhai Wen Laishun Qin Yanmin Jia Dong-Liang Peng Wanping Chen Da Chen Balancing the piezoelectric coefficient and carrier concentration of Bi2WO6−x for ultrahigh piezocatalysis Journal of Advanced Ceramics piezocatalysis oxygen vacancy carrier concentration piezoelectric coefficient hydrogen evolution |
| title | Balancing the piezoelectric coefficient and carrier concentration of Bi2WO6−x for ultrahigh piezocatalysis |
| title_full | Balancing the piezoelectric coefficient and carrier concentration of Bi2WO6−x for ultrahigh piezocatalysis |
| title_fullStr | Balancing the piezoelectric coefficient and carrier concentration of Bi2WO6−x for ultrahigh piezocatalysis |
| title_full_unstemmed | Balancing the piezoelectric coefficient and carrier concentration of Bi2WO6−x for ultrahigh piezocatalysis |
| title_short | Balancing the piezoelectric coefficient and carrier concentration of Bi2WO6−x for ultrahigh piezocatalysis |
| title_sort | balancing the piezoelectric coefficient and carrier concentration of bi2wo6 x for ultrahigh piezocatalysis |
| topic | piezocatalysis oxygen vacancy carrier concentration piezoelectric coefficient hydrogen evolution |
| url | https://www.sciopen.com/article/10.26599/JAC.2024.9220970 |
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