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学科主题: 物理化学
题名: Catalyst-Free Synthesis of Crumpled Boron and Nitrogen Co-Doped Graphite Layers with Tunable Bond Structure for Oxygen Reduction Reaction
作者: Jin, Jutao1, 2;  Pan, Fuping1;  Jiang, Luhua2;  Fu, Xiaogang1;  Liang, Aiming1;  Wei, Zhiyang1;  Zhang, Junyan1;  Sun, Gongquan2
通讯作者: JunyanZhang ;  孙公权
关键词: catalyst-free ;  BCN sheet ;  tunable bond structure ;  oxygen reduction reaction
刊名: ACS NANO
发表日期: 2014-04-01
DOI: 10.1021/nn404927n
卷: 8, 期:4, 页:3313-3321
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Multidisciplinary ;  Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Two-dimensional materials based on ternary system of B, C and N are useful ranging from electric devices to catalysis. The bonding arrangement within these BCN nanosheets largely determines their electronic structure and thus chemical and (or) physical properties, yet it remains a challenge to manipulate their bond structures in a convenient and controlled manner. Recently, we developed a synthetic protocol for the synthesis of crumpled BCN nanosheets with tunable B and N bond structure using urea, boric acid and polyethylene glycol (PEG) as precursors. By carefully selecting the synthesis condition, we can tune the structure of BCN sheets from s-BCN with B and N bond together to h-BCN with B and N homogenously dispersed in BCN sheets. Detailed experiments suggest that the final bond structure of B and N in graphene depends on the preferentially doped N structure in BCN nanosheets. When N substituted the in-plane carbon atom with all its electrons configured into the pi electron system of graphene, it facilitates the formation of h-BCN with B and N in separated state. On the contrary, when nitrogen substituted the edge-plane carbon with the nitrogen dopant surrounded with the lone electron pairs, it benefits for the formation of B-N structure. Specially, the compound riched with h-BCN shows excellent ORR performance in alkaline solution due to the synergistic effect between B and N, while s-BCN dominant BCN shows graphite-like activity for ORR, suggesting the intrinsic properties differences of BCN nanosheets with different dopants bond arrangement.
关键词[WOS]: METAL-FREE ELECTROCATALYSTS ;  ALIGNED BCN NANOTUBES ;  CARBON NANOTUBES ;  MONOLAYER GRAPHENE ;  ATOMIC LAYERS ;  BORIC-ACID ;  NITRIDE ;  HETEROSTRUCTURES ;  GROWTH ;  IMPURITIES
语种: 英语
WOS记录号: WOS:000334990600021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144124
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, State Key Lab Solid Lubricat, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, Lab Fuel Cell, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Jin, Jutao,Pan, Fuping,Jiang, Luhua,et al. Catalyst-Free Synthesis of Crumpled Boron and Nitrogen Co-Doped Graphite Layers with Tunable Bond Structure for Oxygen Reduction Reaction[J]. ACS NANO,2014,8(4):3313-3321.
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