Spontaneous room temperature elongation of CdS and Ag2S nanorods via oriented attachment
|Title:||Spontaneous room temperature elongation of CdS and Ag2S nanorods via oriented attachment||Authors:||O'Sullivan, Catriona
Gunning, Robert Denis
Barrett, Christopher A.
Laffir, Fathima R.
Ryan, Kevin M.
|Permanent link:||http://hdl.handle.net/10197/2721||Date:||6-Aug-2009||Abstract:||Spontaneous elongation from nanorod to nanowire in the presence of an amine is reported for nanocrystals of cadmium sulﬁde and silver sulﬁde (cation exchanged from CdS). Elongation occurs instantaneously where the ﬁnal aspect ratio is a controllable multiple of the original nanorod length. Transmission electron microscopy (TEM) analysis reveals the inﬂuential factors on the attachment processare the concentration of amine, duration and temperature of the reaction. The elongated nanorods are further characterized by X-ray diffraction (XRD), photoluminescence (PL), ultraviolet-visible spectroscopy(UV-vis) and X-ray photoelectron spectroscopy (XPS). A mechanism of oriented attachment is evidenced by the doubling in length of asymmetrically gold tipped CdS nanorods with the corresponding absence of elongation in symmetrically tipped nanorods.||Funding Details:||Science Foundation Ireland
Higher Education Authority
Irish Research Council for Science, Engineering and Technology
|Type of material:||Journal Article||Publisher:||ACS Publications||Journal:||Journal of the American Chemical Society||Volume:||131||Issue:||34||Start page:||12250||End page:||12257||Copyright (published version):||2009 American Chemical Society||Keywords:||Elongation; Nanorods; Spontaneous; CdS||Subject LCSH:||Nanostructured materials
|DOI:||10.1021/ja902860t||Other versions:||http://pubs.acs.org/doi/abs/10.1021/ja902860t||Language:||en||Status of Item:||Peer reviewed|
|Appears in Collections:||Solar Energy Conversion (SEC) Cluster Research Collection|
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