Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 4, Issue 5, Pages 412-416Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S1388-2481(02)00324-7
Keywords
bilayer; nanoparticle; ensemble; differential pulse voltammetry; differential capacitance
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CTAB-stabilized silver nanoparticles were synthesized by NaBH4 reduction. The as-prepared nanoparticles can be self-assembled on 3-mercaptopropionic acid (MPA) modified gold electrode, which was supported strongly by XPS measurements. Exceptional long-term stability of the as-prepared colloidal silver aqueous solution and the desorption of silver nanoparticle ensemble on MPA after alcohol rinsing proved that these CTAB molecules adsorbed on silver core formed interdigitated bilayer structure. DPV and differential capacitance measurements were performed to characterize the as-prepared silver nanoparticle ensemble. and the interesting quantized capacitance charging behaviors were observed. (C) 2002 Elsevier Science B.V. All rights reserved.
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