Electrochemical Fabrication of Two-Dimensional Palladium Nanostructures as Substrates for Surface Enhanced Raman Scattering

Two-dimensional palladium (Pd) nanostructures have been fabricated by electrochemical deposition of Pd onto an indium tin oxide glass substrate modified with a thin flat film of polypyrrole or a nanofibril film of polyaniline. The experimental results demonstrated that the morphology of Pd nanoparti...

Full description

Saved in:
Bibliographic Details
Published in:The journal of physical chemistry. B 2006-12, Vol.110 (48), p.24585-24592
Main Authors: Li, Yin, Lu, Gewu, Wu, Xufeng, Shi, Gaoquan
Format: Article
Language:English
Subjects:
Electrochemistry
Electrodes
Microscopy, Electron, Scanning
Nanostructures - chemistry
Nanostructures - ultrastructure
Palladium - chemistry
Polymers - chemistry
Pyrroles - chemistry
Solutions
Spectrum Analysis, Raman
X-Ray Diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Two-dimensional palladium (Pd) nanostructures have been fabricated by electrochemical deposition of Pd onto an indium tin oxide glass substrate modified with a thin flat film of polypyrrole or a nanofibril film of polyaniline. The experimental results demonstrated that the morphology of Pd nanoparticles strongly depended on the properties of conducting polymers and the conditions of electrochemical deposition. Two-dimensional nanostructures composed of flower-like (consisting of staggered nanosheets) or pinecone-like Pd nanoparticles were successfully synthesized. They can be used as substrates for surface-enhanced Raman scattering after partly decomposing the polymer components by heating in air, and the enhancement factor of the substrate composed of flower-like Pd nanoparticles was measured to be as high as 105 for 4-mercaptopyridine.
ISSN:1520-6106
1520-5207
DOI:10.1021/jp0638787