Understanding oxygen vacancies in disorder-engineered surface and subsurface of CaTiO3 nanosheets on photocatalytic hydrogen evolution
文献类型：期刊论文
| 作者 | Cai, JM; Cao, A; Huang, JJ; Jin, WF; Zhang, J; Jiang, Z; Li, XG |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2020 |
| 卷号 | 267页码:- |
| 关键词 | BLACK TIO2 EFFICIENT NANOPARTICLES WATER NICKEL DEGRADATION COMPOSITES GRAPHENE CATALYST DEFECTS |
| ISSN号 | 0926-3373 |
| DOI | 10.1016/j.apcatb.2019.118378 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Hydrogenation-induced surface disorder on semiconductors has been proved an efficient strategy in photocatalysis, but identification and understanding of surface and subsurface disordered layers from molecular level viewpoints are still unclear. Herein, we fabricate efficient disorder-engineered CaTiO3 nanosheets photocatalysts and illustrate functions of surface and subsurface oxygen vacancies on photocatalytic hydrogen evolution. Our experimental and theoretical results reveal that subsurface oxygen vacancies can change energy band structure of CaTiO3 to form band tail states, improving charge separation; and surface oxygen vacancies can act as active centers to facilitate H-2 formation. Both merits promote similar to 49 times of the hydrogen evolution rate than pristine CaTiO3. In addition, we discover that improving charge separation with subsurface oxygen vacancies is more important than promoting surface reactions with surface oxygen vacancies in defect-engineered photocatalysts. Our work provides new insights into the hydrogenated disordered surface layer, as well as the rational design of photocatalysts with defect-engineering strategies. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/33247]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Westlake Univ, Westlake Inst Adv Study, Hangzhou 310024, Peoples R China 2.Tianjin Univ, Sch Chem Engn & Technol, Tianjin Key Lab Appl Catalysis Sci & Engn, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201800, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, JM,Cao, A,Huang, JJ,et al. Understanding oxygen vacancies in disorder-engineered surface and subsurface of CaTiO3 nanosheets on photocatalytic hydrogen evolution[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2020,267:-. |
| APA | Cai, JM.,Cao, A.,Huang, JJ.,Jin, WF.,Zhang, J.,...&Li, XG.(2020).Understanding oxygen vacancies in disorder-engineered surface and subsurface of CaTiO3 nanosheets on photocatalytic hydrogen evolution.APPLIED CATALYSIS B-ENVIRONMENTAL,267,-. |
| MLA | Cai, JM,et al."Understanding oxygen vacancies in disorder-engineered surface and subsurface of CaTiO3 nanosheets on photocatalytic hydrogen evolution".APPLIED CATALYSIS B-ENVIRONMENTAL 267(2020):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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