Formation mechanism of copper-silver metal nanoparticles encapsulated in carbon shell

H. Y. Kang, H. Paul Wang, C. H. Huang, C. K. Tsai, C. J.G. Jou, U. Ser Jeng, Chun Hun Su

研究成果: Conference contribution

摘要

Small angle X-ray scattering (SAXS) is a very useful method in studies of electron density distributions of nanoparticles. The formation mechanism of nanosize copper-silver encapsulated in the inert carbon shell (Cu/Ag@C) has been studied by in-situ synchrotron SAXS spectroscopy. The SAXS spectra have been determined during the temperature-dependent formation of the nanosize Cu/Ag@C. A detailed structural changes corresponding to the growth of the Cu/Ag nanoparticles as the Ag+- and Cu2+- β-cyclodextrin (β-CD) complexes are carbonized at the temperature range of 363-513 K. By controlling the molar ratios of OH on β-CD to metal, the desired size (i.e., ranged from 7 to 40 nm) can be synthesized. A rapid growth of the Cu/Ag nanoparticles occurs at 393-423 K. The diameter of the complete growth of the Cu/Ag@C nanoparticles is in the range of 20-26 nm with the carbon shell thicknesses of 3-5 nm.

原文English
主出版物標題Nanotechnology 2010
主出版物子標題Advanced Materials, CNTs, Particles, Films and Composites - Technical Proceedings of the 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010
頁面417-420
頁數4
出版狀態Published - 2010 11月 9
事件Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites - 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010 - Anaheim, CA, United States
持續時間: 2010 6月 212010 6月 24

出版系列

名字Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites - Technical Proceedings of the 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010
1

Other

OtherNanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites - 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010
國家/地區United States
城市Anaheim, CA
期間10-06-2110-06-24

All Science Journal Classification (ASJC) codes

  • 陶瓷和複合材料
  • 表面、塗料和薄膜
  • 表面和介面

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