Additional file 1: Figure S1.
Schematic rectification setup. Working electrode (W.E) is DWCNT membrane coated with 30-nm-thick Pd/Au film; reference/counter electrode (R.E/C.E) is Ag/AgCl electrode. Constant potential was provided using a Princeton Scientific Model 263A potentiostat. Both U-tube sides are filled with potassium ferricyanide (K3Fe(CN)6) solution. Linear scan from −0.60 to +0.60 V with the scan rate at 50 mV/s.
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Zhan et al. Nanoscale Research Letters 2013 8:279 doi:10.1186/1556-276X-8-279