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题名: Size-dependence of carbon nanotube confinement in catalysis
作者: Xiao, Jianping1;  Pan, Xiulian1;  Zhang, Fan1;  Li, Haobo1;  Bao, Xinhe1
刊名: CHEMICAL SCIENCE
发表日期: 2017
DOI: 10.1039/c6sc02298g
卷: 8, 期:1, 页:278-283
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: An increasing number of studies have demonstrated that confinement within carbon nanotubes (CNTs) provides an effective approach for the modulation of catalysis. It was generally predicted that confinement became stronger with a decreasing diameter of CNTs. However, our present study here overturns the previous expectation: the influence on catalysis is not monotonic. Instead, it exhibits a volcano relationship with CNT diameter. Taking Pt catalyzing O-2 conversion and Re catalyzing N-2 conversion as probes using density functional theory, we show that only within tubes with an i. d. of similar to 1 nm can the activity of metal clusters be enhanced to its maximum. Furthermore, confinement only enhances the catalytic activity of metals with strong intrinsic binding with reactants, whereas it is suppressed for those with weak binding. These findings shed further light on the fundamental effects of confinement on catalysis, and could guide more rational design of confined catalysts.
关键词[WOS]: RU NANOPARTICLES ;  WATER ;  ENCAPSULATION ;  ADSORPTION ;  DIFFUSION ;  DESIGN ;  COVER ;  IRON
语种: 英语
WOS记录号: WOS:000391454500030
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151870
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 Catalysis, Dalian Inst Chem Phys, Zhongshan Rd 457, Dalian 116023, Peoples R China

Recommended Citation:
Xiao, Jianping,Pan, Xiulian,Zhang, Fan,et al. Size-dependence of carbon nanotube confinement in catalysis[J]. CHEMICAL SCIENCE,2017,8(1):278-283.
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