Cj. Slevin et al., Fabrication and characterisation of nanometre-sized platinum electrodes for voltammetric analysis and imaging, ELECTROCH C, 1(7), 1999, pp. 282-288
A simple procedure is described for the fabrication of micrometre to nanome
tre scale Pt electrodes. These electrodes are prepared by etching a fine Pt
wire, which is subsequently coated with an electrophoretic paint, deposite
d anodically or cathodically. The electrodes are characterised by scanning
electron microscopy and steady-state linear sweep voltammetry. Voltammetric
measurements of the oxidation of aqueous ferrocyanide at electrodes with e
ffective radii varying from 1 mu m to 10 nm show the expected increase in i
rreversibility with increasing mass transport rate. The electrodes are show
n to be particularly promising as imaging probes for scanning electrochemic
al microscopy. (C) 1999 Elsevier Science S.A. All rights reserved.