Research Article
Electrochemically Effective Surface Area of a Polyaniline Nanowire-Based Platinum Microelectrode and Development of an Electrochemical DNA Sensor
Figure 1
(a) Chronoamperometric curves during electropolymerization of PANi NWs on Pt WEs in 0.05 M aniline and 0.5 M H2SO4 with different sets of time: (a) 300, (b) 400, (c) 500, and (d) 600 seconds; (b) EIS spectra (Nyquist plots) of Pt/PANi NW electrodes in which PANi NWs were electrosynthesized with different sets of time: (a) 300, (b) 400, (c) 500, and (d) 600 seconds; and (c) CV results of (a) Pt and (b) Pt/PANi NW electrodes. Experimental conditions: EIS spectra were measured in K3Fe(CN)6/K4Fe(CN)6 (0.005 M) and 0.1 M KCl solution, frequency range: 100 kHz–100 mHz, EAC = 5 mV, and EDC = 160 mV; CV measurements were conducted at a scan rate of 50 mV s−1 in K3Fe(CN)6/K4Fe(CN)6 (0.005 M) and 0.1 M KCl solution.
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