Please use this identifier to cite or link to this item:
|Title:||Preparation and characterization of Cr(CO)4dpp (chromium tetracarbonyl 2,3-bis(2′-pyridyl)pyrazine) adsorbed on silver nanoparticles|
|Citation:||Tan, H., Wong, L., Lai, M.Y., Kiruba, G.S.M., Leong, W.K., Wong, M.W., Fan, W.Y. (2005-10-27). Preparation and characterization of Cr(CO)4dpp (chromium tetracarbonyl 2,3-bis(2′-pyridyl)pyrazine) adsorbed on silver nanoparticles. Journal of Physical Chemistry B 109 (42) : 19657-19663. ScholarBank@NUS Repository. https://doi.org/10.1021/jp0536347|
|Abstract:||A transition metal carbonyl species, Cr(CO)4dpp, has been successfully attached to bare silver nanoparticles prepared by laser ablation of a metal foil in ethanol. Transmission electron microscopy (TEM) images have shown that at least a portion of the silver nanoparticles have been capped by the chromium species, and ligand shells corresponding to Cr(CO)4dpp multilayer adsorption onto the silver nanoparticles of 30-50 nm diameter have been observed. The detection of the strongest Raman-active vCO band of Cr(CO)4dpp at 2004 cm-1 revealed that the species has been adsorbed without decomposition. The time-of-flight secondary ion mass spectrometry (TOF-SIMS) signals recorded of the chromium-capped silver nanoparticles were also consistent with the nondecomposition adsorption process. Density functional calculations have been used to reproduce the Raman spectrum using Ag7+ as a model surface. A large binding energy of about 122 kJ/mol has also been computed between silver and nitrogen atoms thus lending support to Cr(CO)4dpp being chemisorbed onto the silver surface. © 2005 American Chemical Society.|
|Source Title:||Journal of Physical Chemistry B|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 14, 2018
WEB OF SCIENCETM
checked on Jun 18, 2018
checked on Jun 29, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.