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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationNanotechnology 2010
Subtitle of host publicationAdvanced Materials, CNTs, Particles, Films and Composites - Technical Proceedings of the 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010
Pages417-420
Number of pages4
Publication statusPublished - 2010 Nov 9
EventNanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites - 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010 - Anaheim, CA, United States
Duration: 2010 Jun 212010 Jun 24

Publication series

NameNanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites - Technical Proceedings of the 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010
Volume1

Other

OtherNanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites - 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010
CountryUnited States
CityAnaheim, CA
Period10-06-2110-06-24

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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    Kang, H. Y., Paul Wang, H., Huang, C. H., Tsai, C. K., Jou, C. J. G., Jeng, U. S., & Su, C. H. (2010). Formation mechanism of copper-silver metal nanoparticles encapsulated in carbon shell. In Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites - Technical Proceedings of the 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010 (pp. 417-420). (Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites - Technical Proceedings of the 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010; Vol. 1).