2.3 Bioelectroactivity analysis anodophilic biofilms
The bioelectroactivity of the anodophilic biofilms in the SAMFCs at the
period of initial (t0), 20th day
(t20) and 100th day
(t100) was analyzed by cyclic voltammetry (CV) using
potentiostatically-controlled three-electrode system, in which the anode
served as the working electrode, the air-cathode served as the counter
electrode and an Ag/AgCl electrode served as the reference electrode.
The CV measurements were controlled by a potentiostat (CHI1040B,
Shanghai Chenhua Instrument Co., Ltd, China) and carried out in the
potential range from +0.4 V to -0.5V at scanning rate of 1 mV
s-1. All the SAMFCs were set at open-circuit condition
for 1h before CV implementation.