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学科主题: 物理化学
题名: A Quantitative Electron Tomography Study of Ruthenium Particles on the Interior and Exterior Surfaces of Carbon Nanotubes
作者: Friedrich, Heiner1;  Guo, Shujing2;  de Jongh, Petra E.1;  Pan, Xiulian2;  Bao, Xinhe2;  de Jong, Krijn P.1
通讯作者: HeinerFriedrich
关键词: carbon nanotube ;  catalysis ;  electron tomography ;  electronmicroscopy ;  image analysis
刊名: CHEMSUSCHEM
发表日期: 2011
DOI: 10.1002/cssc.201000325
卷: 4, 期:7, 页:957-963
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 502
产权排名: 2,2
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
摘要: A Quantitative Electron Tomography Study of Ruthenium Particles on the Interior and Exterior Surfaces of Carbon Nanotubes
研究领域[WOS]: Chemistry
英文摘要: The efficiency of filling carbon nanotubes (CNTs) by ultrasound-assisted wet impregnation is quantified by electron tomography (ET). For image analysis, a method that combines edge detection with single-value thresholding is proposed and validated. A high proportion (80 wt%) of the ruthenium was deposited inside the tube at an average particle size of 24 nm. Particles located on the outer surface of the CNT had a size of 1-3 nm. The local ruthenium loading measured by ET (3.2 wt%) closely matched the value from elemental analysis (3.5 wt%). In addition, a few 1 nm-sized ruthenium particles were detected inside the carbon wall, which contained pores/cracks. Direct imaging and quantification is a powerful tool to understand and possibly model the unique properties of CNT-based catalysts.
关键词[WOS]: SELECTIVE HYDROGENATION ;  HETEROGENEOUS CATALYSTS ;  THRESHOLDING TECHNIQUES ;  METAL NANOPARTICLES ;  MESOPOROUS SILICA ;  SUPPORTS ;  SIZE ;  CINNAMALDEHYDE ;  CONFINEMENT ;  PERFORMANCE
语种: 英语
WOS记录号: WOS:000293594300013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115484
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.Univ Utrecht, NL-3584 CA Utrecht, Netherlands
2.Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Friedrich, Heiner,Guo, Shujing,de Jongh, Petra E.,et al. A Quantitative Electron Tomography Study of Ruthenium Particles on the Interior and Exterior Surfaces of Carbon Nanotubes[J]. CHEMSUSCHEM,2011,4(7):957-963.
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