Assembly of Hollow Carbon Nanospheres on Graphene Nanosheets and Creation of Iron-Nitrogen-Doped Porous Carbon for Oxygen Reduction
文献类型：期刊论文
| 作者 | Ide, Y; Wang, JY ; Wang, ZL; Chen, T; Xu, XT; Li, YQ; Henzie, J; Tang, J; Tan, HB; Chen T(陈涛)
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| 刊名 | ACS NANO
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| 出版日期 | 2018 |
| 卷号 | 12期号:6页码:5674-5683 |
| 关键词 | monomicelle assembly two-dimensional architecture sandwich-like composite iron- and nitrogen-doped carbon oxygen reduction |
| ISSN号 | 1936-0851 |
| DOI | 10.1021/acsnano.8b01502 |
| 文献子类 | Article |
| 英文摘要 | Triblock copolymer micelles coated with melamine-formaldehyde resin were self-assembled into closely packed two-dimensional (2D) arrangements on the surface of graphene oxide sheets. Carbonizing these structures created a 2D architecture composed of reduced graphene oxide (rGO) sandwiched between two monolayers of sub-40 nm diameter hollow nitrogen-doped carbon nano spheres (N-HCNS). Electrochemical tests showed that these hybrid structures had better performance for oxygen reduction compared to physically mixed rGO and N-HCNS that were not chemically bonded together. Further impregnation of the sandwich structures with iron (Fe) species followed by carbonization yielded Fe/(1.6)-N-HCNS/rGO-900 with a high specific surface area (968.3 m(2) g(-1)), a high nitrogen doping (6.5 at%), and uniformly distributed Fe dopant (1.6 wt %). X-ray absorption fine structure analyses showed that most of the Fe in the nitrogen doped carbon framework is composed of single Fe atoms each coordinated to four N atoms. The best Fe-1.6-N-HCNS/rGO-900 catalyst performed better in electrocatalytic oxygen reduction than 20 wt % Pt/C catalyst in alkaline medium, with a more positive half-wave potential of 0.872 V and the same limiting current density. Bottom-up soft-patterning of regular carbon arrays on free-standing 2D surfaces should enable conductive carbon supports that boost the performance of electrocatalytic active sites. |
| 电子版国际标准刊号 | 1936-086X |
| WOS关键词 | METAL-ORGANIC FRAMEWORK ; ACTIVE-SITES ; EFFICIENT ; PERFORMANCE ; ELECTROCATALYSTS ; CATALYSTS ; ELECTRODES ; ALKALINE ; SPHERES ; SUPERCAPACITORS |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000436910200063 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286074]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Ide, Y,Wang, JY,Wang, ZL,et al. Assembly of Hollow Carbon Nanospheres on Graphene Nanosheets and Creation of Iron-Nitrogen-Doped Porous Carbon for Oxygen Reduction[J]. ACS NANO,2018,12(6):5674-5683. |
| APA | Ide, Y.,Wang, JY.,Wang, ZL.,Chen, T.,Xu, XT.,...&B.(2018).Assembly of Hollow Carbon Nanospheres on Graphene Nanosheets and Creation of Iron-Nitrogen-Doped Porous Carbon for Oxygen Reduction.ACS NANO,12(6),5674-5683. |
| MLA | Ide, Y,et al."Assembly of Hollow Carbon Nanospheres on Graphene Nanosheets and Creation of Iron-Nitrogen-Doped Porous Carbon for Oxygen Reduction".ACS NANO 12.6(2018):5674-5683. |
入库方式： OAI收割
来源：高能物理研究所
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