DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/1006

Title: CuO nanocrystallites obtained by oxidation of copper arachidate LB multilayers
Authors: SINGH, SUKHVINDER
SRINIVASA, RS
TALWAR, SS
MAJOR, SS
Keywords: copper compounds
langmuir blodgett films
atomic force microscopy
ph effects
Issue Date: 2007
Publisher: Elsevier
Citation: Materials Letters 61(14-15), 3224-3228
Abstract: Copper arachidate (CuA) Langmuir–Blodgett (LB) multilayers were transferred in the subphase pH range 4.6–5.7. FTIR studies of multilayers show a gradual increase in CuA content as subphase pH is increased. X-ray reflection patterns of multilayers show presence of a single layered structure in all the multilayers transferred at different subphase pH. A continuous decrease in bilayer period from 52.5 Å to 47 Å is seen with decrease in CuA content of the multilayers. These observations suggest mixing of CuA and arachidic acid molecules at the molecular level. The precursor CuA multilayers were oxidized at 300 °C–700 °C. The formation of CuO is confirmed by UV–Visible spectroscopy. Atomic force micrographs show the formation of CuO nanocrystallites and their clusters, with the average size, size distribution, height and density of nanocrystallites depending strongly on subphase pH, number of monolayers and oxidation temperature. Typically, 7–11 monolayers CuA transferred at subphase pH of 4.6 and oxidized at 700 °C resulted in isolated and nearly mono-disperse nanocrystallites of size 20–30 nm and height ~1 nm. Crystallites of size 2–10 nm along with few clusters were obtained by oxidation of a 3 monolayer CuA.
URI: http://dx.doi.org/10.1016/j.matlet.2006.11.043
http://hdl.handle.net/10054/1006
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1006
ISSN: 0167-577X
Appears in Collections:Article

Files in This Item:

File Description SizeFormat
5585.pdf1.16 MBAdobe PDFView/Open
View Statistics

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

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback