Local structure of nanoporous carbons

被引:119
作者
Petkov, V
DiFrancesco, RG
Billinge, SJL [1 ]
Acharya, M
Foley, HC
机构
[1] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
[2] Michigan State Univ, Ctr Fundamental Mat Res, E Lansing, MI 48824 USA
[3] Univ Delaware, Dept Chem Engn, Ctr Catalyt Sci & Technol, Newark, DE 19716 USA
来源
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | 1999年 / 79卷 / 10期
基金
美国国家科学基金会;
关键词
D O I
10.1080/13642819908218319
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The local atomic structure of nanoporous carbons produced by pyrolysis of poly(furfuryl alcohol) at various temperatures has been studied using neutron diffraction. Atomic pail distribution functions (PDFs) were obtained from the neutron data. Structure models have been fitted to the PDFs to understand the fine features of atomic ordering. It has been found that carbons produced at 800 and 1200 degrees C are made of stacked graphene sheets, that are more or less curved. The 400 degrees C-processed carbon has a heavily distorted nonplanar: structure. For each sample we have determined the extent of the structural coherence, the average density within the structurally coherent regions and the proportion of Carbon atoms, which are trigonally coordinated. We have also produced microscopic models for the local structure of the nanoporous carbons investigated.
引用
收藏
页码:1519 / 1530
页数:12
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