| Manganese deception on graphene and implications in catalysis | |
| Ye, Ruquan1; Dong, Juncai5; Wang, Luqing4; Mendoza-Cruz, Ruben6; Li, Yilun1; An, Peng-Fei5; Yacaman, Miguel Jose6; Yakobson, Boris I.1,2,3,4; Chen, Dongliang5; Tour, James M.1,2,3,4 | |
| 刊名 | Carbon
 |
| 2018-06-01 | |
| 卷号 | 132页码:623-631 |
| 关键词 | Metal-free catalyst Oxygen reduction reaction Heteroatom-doped graphene Metal-free graphene |
| ISSN号 | 0008-6223 |
| DOI | 10.1016/j.carbon.2018.02.082 |
| 通讯作者 | Yacaman, miguel jose(miguel.yacaman@utsa.edu) ; Yakobson, boris i.(biy@rice.edu) ; Chen, dongliang(chendl@ihep.ac.cn) ; Tour, james m.(tour@rice.edu) |
| 英文摘要 | Heteroatom-doped metal-free graphene has been widely studied as the catalyst for the oxygen reduction reaction (orr). depending on the preparation method and the dopants, the orr activity varies ranging from a two-electron to a four-electron pathway. the different literature reports are difficult to correlate due to the large variances. however, due to the potential metal contamination, the origin of the orr activity from "metal-free" graphene remains confusing and inconclusive. here we decipher the orr catalytic activities of diverse architectures on graphene derived from reduced graphene oxide. high angle annular dark field scanning transmission electron microscopy, x-ray absorption near edge structure, extended x-ray absorption fine structure, and trace elemental analysis methods are employed. the mechanistic origin of orr activity is associated with the trace manganese content and reaches its highest performance at an onset potential of 0.94 v when manganese exists as a mononuclear-centered structure within defective graphene. this study exposes the deceptive role of trace metal in formerly thought to be metal-free graphene materials. it also provides insight into the design of better-performing catalyst for orr by underscoring the coordination chemistry possible for future single-atom catalyst materials. (c) 2018 elsevier ltd. all rights reserved. |
| WOS关键词 | OXYGEN REDUCTION REACTION ; NITROGEN-DOPED GRAPHENE ; METALLIC IMPURITIES ; ALKALINE MEDIA ; EFFICIENT ; OXIDE ; CARBON ; ELECTROCATALYST ; PERFORMANCE ; COMPLEXES |
| WOS研究方向 | Chemistry ; Materials Science |
| WOS类目 | Chemistry, Physical ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000428233000067 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2178151 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Yacaman, Miguel Jose; Yakobson, Boris I.; Chen, Dongliang; Tour, James M. |
| 作者单位 | 1.Rice Univ, Dept Chem, 6100 Main St, Houston, TX 77005 USA 2.Rice Univ, Smalley Curl Inst, 6100 Main St, Houston, TX 77005 USA 3.Rice Univ, NanoCarbon Ctr, 6100 Main St, Houston, TX 77005 USA 4.Rice Univ, Dept Mat Sci & NanoEngn, 6100 Main St, Houston, TX 77005 USA 5.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China 6.Univ Texas San Antonio, Dept Phys & Astron, One UTSA Circle, San Antonio, TX 78249 USA |
| 推荐引用方式 GB/T 7714 | Ye, Ruquan,Dong, Juncai,Wang, Luqing,et al. Manganese deception on graphene and implications in catalysis[J]. Carbon,2018,132:623-631. |
| APA | Ye, Ruquan.,Dong, Juncai.,Wang, Luqing.,Mendoza-Cruz, Ruben.,Li, Yilun.,...&Tour, James M..(2018).Manganese deception on graphene and implications in catalysis.Carbon,132,623-631. |
| MLA | Ye, Ruquan,et al."Manganese deception on graphene and implications in catalysis".Carbon 132(2018):623-631. |
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