Please use this identifier to cite or link to this item:
Title: Hollow and cage-bell structured nanomaterials of noble metals
Authors: Liu, H.
Qu, J.
Chen, Y.
Li, J.
Ye, F.
Lee, J.Y. 
Yang, J.
Issue Date: 18-Jul-2012
Citation: Liu, H., Qu, J., Chen, Y., Li, J., Ye, F., Lee, J.Y., Yang, J. (2012-07-18). Hollow and cage-bell structured nanomaterials of noble metals. Journal of the American Chemical Society 134 (28) : 11602-11610. ScholarBank@NUS Repository.
Abstract: Mastery of the structure of nanomaterials enables control of their properties to enhance their performance for a given application. Herein we demonstrate the synthesis of metal nanomaterials with hollow interiors or cage-bell structures based on the inside-out diffusion of Ag in core-shell structured nanoparticles. It begins with the synthesis of core-shell Ag-M or core-shell-shell M A-Ag-M B nanoparticles in an organic solvent. Ag is then extracted from the core or the inner shell by bis(p-sulfonatophenyl)phenylphosphane, which binds strongly with Ag(I)/Ag(0) to allow the complete removal of Ag in 24-48 h, leaving behind an organosol of hollow or cage-bell structured metal nanomaterials. Because of their relatively lower densities, which usually translate to a higher surface area than their solid counterparts, the hollow and cage-bell structured metal nanomaterials are especially relevant to catalysis. For example, cage-bell structured Pt-Ru nanoparticles were found to display outstanding methanol tolerance for the cathode reaction of direct methanol fuel cells (DMFCs) as a result of the differential diffusion of methanol and oxygen in the cage-bell structure. © 2012 American Chemical Society.
Source Title: Journal of the American Chemical Society
ISSN: 00027863
DOI: 10.1021/ja302518n
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on May 25, 2020


checked on May 25, 2020

Page view(s)

checked on May 31, 2020

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.