Reducing the vacancies associated with ferroelectric polarization to promote photocatalytic overall water splitting
文献类型：期刊论文
| 作者 | Qi, Haozhi1,2; Kang, Yuyang1,2; Liu, Jian-An1,2; Yin, Lichang1,2; Zhang, Wenyu1,2; Ma, Shangyi1,2; Qiu, Jianhang1,2; Li, Lingli1,2; Hu, Weijin1,2; Wang, Lianzhou3,4 |
| 刊名 | SCIENCE CHINA-CHEMISTRY
 |
| 出版日期 | 2024-08-16 |
| 页码 | 7 |
| 关键词 | PbTiO3 ferroelectric polarization vacancy defect element doping photocatalytic overall water splitting |
| ISSN号 | 1674-7291 |
| DOI | 10.1007/s11426-024-2152-5 |
| 通讯作者 | Liu, Gang(gangliu@imr.ac.cn) |
| 英文摘要 | Ferroelectric materials hold great promise in photocatalytic water splitting because their built-in electric field induced by the depolarization field can fulfill the separation of photogenerated carriers. However, a number of intrinsic charged vacancy defects are simultaneously generated to screen the depolarized field for stabilizing the crystal structure, always resulting in severe recombination of photogenerated carriers and thus poor overall water splitting activity. Herein, we proposed a strategy to promote the separation and transport of photogenerated carriers of ferroelectric photocatalysts by adjusting the ferroelectric polarization and altering the coordination environment of elements to reduce the defect concentration. Specifically, we prepared a series of Ta-doped PbTiO3 with low Pb (VPb) and O (VO) vacancy concentrations by reducing the polarization intensity and strengthening the Pb-O interaction. The Ta-doped PbTiO3 shows efficient charge separation and greatly enhanced photocatalytic overall water splitting activity with the assistance of cocatalyst. This work highlights the importance of regulating ferroelectric polarization and vacancy defect concentration by the doping strategy in charge separation for photocatalytic water splitting. |
| 资助项目 | National Natural Science Foundation of China[52425201] ; National Natural Science Foundation of China[52120105003] ; National Natural Science Foundation of China[52002377] ; National Natural Science Foundation of China[52372243] ; National Key R&D Program of China[2021YFA1500800] ; CAS Projects for Young Scientists in Basic Research[YSBR-004] ; International Partnership Program of the Chinese Academy of Sciences[174321KYSB20200005] ; New Cornerstone Science Foundation through the XPLORER PRIZE |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:001293201400005 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | National Natural Science Foundation of China ; National Key R&D Program of China ; CAS Projects for Young Scientists in Basic Research ; International Partnership Program of the Chinese Academy of Sciences ; New Cornerstone Science Foundation through the XPLORER PRIZE |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, Gang |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Univ Queensland, Nanomat Ctr, Sch Chem Engn, Brisbane, Qld 4072, Australia 4.Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia |
| 推荐引用方式 GB/T 7714 | Qi, Haozhi,Kang, Yuyang,Liu, Jian-An,et al. Reducing the vacancies associated with ferroelectric polarization to promote photocatalytic overall water splitting[J]. SCIENCE CHINA-CHEMISTRY,2024:7. |
| APA | Qi, Haozhi.,Kang, Yuyang.,Liu, Jian-An.,Yin, Lichang.,Zhang, Wenyu.,...&Liu, Gang.(2024).Reducing the vacancies associated with ferroelectric polarization to promote photocatalytic overall water splitting.SCIENCE CHINA-CHEMISTRY,7. |
| MLA | Qi, Haozhi,et al."Reducing the vacancies associated with ferroelectric polarization to promote photocatalytic overall water splitting".SCIENCE CHINA-CHEMISTRY (2024):7. |
入库方式： OAI收割
来源：金属研究所
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