Enhanced CO oxidation reaction over Pt nanoparticles covered with ultrathin graphitic layers
文献类型：期刊论文
| 作者 | Qu, Zhenping3; Bao, Xinhe1; Gao, Lijun1,2; Fu, Qiang1; Li, Jiamin3 |
| 刊名 | CARBON
 |
| 出版日期 | 2016-05-01 |
| 卷号 | 101页码:324-330 |
| ISSN号 | 0008-6223 |
| DOI | 10.1016/j.carbon.2016.01.100 |
| 文献子类 | Article |
| 英文摘要 | It has been empirically established that graphitic carbon deposits often result in deactivation of metal catalysts due to the physical blockage of surface active sites. Our recent surface science works however demonstrate that molecules such as CO can adsorb on Pt(111) surface covered by graphene overlayers via an intercalation process, and surface reactions e.g. CO oxidation have been enhanced by the graphene covers. In this work, supported Pt nanocatalysts were coated by ultrathin graphitic carbon layers through chemical vapor deposition process forming Pt@C core-shell nanostructures, which were confirmed by characterizations of Raman spectroscopy, temperature-programmed oxidation and transmission electron microscopy. CO oxidation over the Pt@C catalysts shows a lower apparent activation energy compared with the pure Pt catalysts, and in-situ infrared studies indicate that the reactions occur under the graphitic shells. The present results suggest that coating metal nanocatalysts with ultrathin graphitic overlayers may be used to promote metal catalyzed reactions. (C) 2016 Elsevier Ltd. All rights reserved. |
| WOS关键词 | METAL-CATALYZED REACTIONS ; OXYGEN INTERCALATION ; EPITAXIAL GRAPHENE ; SURFACE-CHEMISTRY ; CARBON-MONOXIDE ; SINGLE-LAYER ; GROWTH ; ADSORPTION ; DEACTIVATION ; RU(0001) |
| WOS研究方向 | Chemistry ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000370816000041 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/171288]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Bao, Xinhe; Fu, Qiang |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Peoples R China 3.Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qu, Zhenping,Bao, Xinhe,Gao, Lijun,et al. Enhanced CO oxidation reaction over Pt nanoparticles covered with ultrathin graphitic layers[J]. CARBON,2016,101:324-330. |
| APA | Qu, Zhenping,Bao, Xinhe,Gao, Lijun,Fu, Qiang,&Li, Jiamin.(2016).Enhanced CO oxidation reaction over Pt nanoparticles covered with ultrathin graphitic layers.CARBON,101,324-330. |
| MLA | Qu, Zhenping,et al."Enhanced CO oxidation reaction over Pt nanoparticles covered with ultrathin graphitic layers".CARBON 101(2016):324-330. |
入库方式： OAI收割
来源：大连化学物理研究所
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