Preparation of hollow spherical carbon nanocages

C. K. Tsai, H. Y. Kang, C. I. Hong, C. H. Huang, F. C. Chang, H. Paul Wang

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)

摘要

This study presents a new and simple method for the synthesis of hollow carbon spheres possessing nanocage sizes of 7.1, 14, and 20 nm in diameter. The core-shell (i.e., Cu@C) nanoparticles prepared by carbonization of the Cu 2+-cyclodextrin (CD) complexes at 573 K for 2 h was etched with HCl (6N) to yield the hollow carbon spheres. The carbonshell of the hollow carbon nanospheres, which consisted of mainly diamond-like and graphite carbons, is not perturbed during etching. In addition to the nanocages, the hollow carbon nanospheres also possess micropores with an opening of 0.45 nm, allowing small molecules to diffuse in and out through the carbon-shell. Many elements (such as Zn2+ or Cu2+) can therefore be filled into the nanocages of the hollow carbon nanospheres. With these unique properties, for instance, designable active species such as Cu and ZnO encapsulated in the carbon-shell can act as Cu- ZnO@C yolk-shell nanoreactors which are found very effective in the catalytic decomposition of methanol.

原文English
文章編號1315
期刊Journal of Nanoparticle Research
14
發行號12
DOIs
出版狀態Published - 2012 12月

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 化學 (全部)
  • 原子與分子物理與光學
  • 建模與模擬
  • 材料科學(全部)
  • 凝聚態物理學

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