Atomic Evolution of Metal-Organic Frameworks into Co-N-3 Coupling Vacancies by Cooperative Cascade Protection Strategy for Promoting Triiodide Reduction
文献类型：期刊论文
| 作者 | BSRF用户 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2021 |
| 卷号 | 125期号:11页码:6147--6156 |
| ISSN号 | 1932-7447 |
| DOI | 10.1021/acs.jpcc.1c01201 |
| 文献子类 | Article |
| 英文摘要 | Precisely controlled synthesis is one of the key issues for single-atom catalysts (SACs) due to isolated atoms have high surface-free-energy toward aggregation. Here, we propose a facile cooperative cascade protection strategy that can transform zeolitic imidazolate frameworks-67 (ZIF-67) to SACs with assistance of readily available salts and glucose. By precisely controlling the proportions of ZIF-67 and glucose precursors in a molten salt medium, the Co atoms in the ZIF-67 were transformed to Co-N-3 coupling vacancies (Co-N-3-V) upon pyrolysis (labeled as SGZ-800). Benefiting from the unique composition and structure properties, the SGZ-800 counter electrode (CE) catalysts for triiodine reduction reaction (TRR) in dye-sensitized solar cells (DSCs) exhibit excellent photovoltaic performance with a power conversion efficiency of 7.89% compared to that of Pt counterpart (7.76%). Density functional theory (DFT) calculations elucidate that the Co-N-3-V geometry structure has an enhanced electron-donating ability and a suitable electronic coupling with I-2, which promotes rapid electron transfer and ensures highly accessible I-2 adsorption. This cascade protection strategy for controlling conversion of ZIF-67 to SACs not only provides new avenue to the construction of metal-organic framework (MOF) derived carbon-supported SACs with tailor compositions but also broaden the way to energy-related electrical conversion devices. |
| 电子版国际标准刊号 | 1932-7455 |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000635441700020 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/293569]  |
| 专题 | 北京同步辐射装置 |
| 推荐引用方式 GB/T 7714 | BSRF用户. Atomic Evolution of Metal-Organic Frameworks into Co-N-3 Coupling Vacancies by Cooperative Cascade Protection Strategy for Promoting Triiodide Reduction[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2021,125(11):6147--6156. |
| APA | BSRF用户.(2021).Atomic Evolution of Metal-Organic Frameworks into Co-N-3 Coupling Vacancies by Cooperative Cascade Protection Strategy for Promoting Triiodide Reduction.JOURNAL OF PHYSICAL CHEMISTRY C,125(11),6147--6156. |
| MLA | BSRF用户."Atomic Evolution of Metal-Organic Frameworks into Co-N-3 Coupling Vacancies by Cooperative Cascade Protection Strategy for Promoting Triiodide Reduction".JOURNAL OF PHYSICAL CHEMISTRY C 125.11(2021):6147--6156. |
入库方式： OAI收割
来源：高能物理研究所
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