Mechanistic Understanding of Size-Dependent Oxygen Reduction Activity and Selectivity over Pt/CNT Nanocatalysts
文献类型：期刊论文
| 作者 | Gan, J; Luo, W; Chen, WY; Guo, JN; Xiang, ZH; Chen, BX; Yang, F; Cao, YJ; Song, F; Duan, XZ |
| 刊名 | EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
 |
| 出版日期 | 2019 |
| 期号 | 27页码:3210-3217 |
| ISSN号 | 1434-1948 |
| 关键词 | CATALYZED HYDROLYTIC DEHYDROGENATION INITIO MOLECULAR-DYNAMICS TOTAL-ENERGY CALCULATIONS ELECTROCATALYTIC ACTIVITY PLATINUM KINETICS DESIGN DISCRIMINATION HYDROGENATION NANOPARTICLES |
| DOI | 10.1002/ejic.201801521 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Identifying the underlying nature of the structure sensitivity of oxygen reduction reaction (ORR) over carbon supported Pt catalysts is an important but challenging issue in electrochemical system. In this work, we combine experiments, density functional theory calculations with model calculations to clarify the size-dependent ORR activity and selectivity over differently sized Pt/CNT catalysts. HAADF-STEM, HRTEM and XPS measurements show that the Pt nanoparticles supported on CNT possess a well-defined truncated octahedron shape in most cases and similar electronic properties. The observed size-insensitive TOFactive site based on the number of Pt(111) atoms suggests the Pt(111) surface as the dominant active site. Moreover, the Pt(111) surface is also suggested as the dominant active sites for the formation of H2O2, and the catalyst with the higher Pt binding energy facilitates the oxygen reduction to H2O. The insights revealed here could shed new light on the design and optimization of Pt-based ORR catalysts. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32131]  |
| 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.East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China; 2.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China; 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China; 4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gan, J,Luo, W,Chen, WY,et al. Mechanistic Understanding of Size-Dependent Oxygen Reduction Activity and Selectivity over Pt/CNT Nanocatalysts[J]. EUROPEAN JOURNAL OF INORGANIC CHEMISTRY,2019(27):3210-3217. |
| APA | Gan, J.,Luo, W.,Chen, WY.,Guo, JN.,Xiang, ZH.,...&Zhou, XG.(2019).Mechanistic Understanding of Size-Dependent Oxygen Reduction Activity and Selectivity over Pt/CNT Nanocatalysts.EUROPEAN JOURNAL OF INORGANIC CHEMISTRY(27),3210-3217. |
| MLA | Gan, J,et al."Mechanistic Understanding of Size-Dependent Oxygen Reduction Activity and Selectivity over Pt/CNT Nanocatalysts".EUROPEAN JOURNAL OF INORGANIC CHEMISTRY .27(2019):3210-3217. |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。