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標題: Electrochemical regulation of microbial growth on disposable screen printed carbon electrodes
作者: Wu, Hui-Ping
Ou, Zih-Wei
Pan, Tsung-Yu
Lan, Chi-Ming
Huang, Wei-Kai
Lee, Hsuan-Wei
Reddy, N.Masi
Chen, Chien-Tien
Chao, Wei-Shan
Yeh, Chen-Yu
Diau, Eric Wei-Guang
關鍵字: Screen-printed carbon electrode;Microbial growth;Cyclic voltammetry
Project: Electrochimica Acta, Volume 82, page(s) 103– 108.
Herein we report an effective method to enhance microbial immobilization on screen-printed carbon
electrode (SPCE) surface by electrochemical regulation of redox potential. This technique could deliver
a prospective electrode for microbial biofuel cell and other applications. A phototrophic purple nonsulfur
bacterium Rhodopseudomonas palustris CGA009 was selected as a model organism to examine
the proposed approach. Scanning the electrode between
−0.7 to 0.3 V (vs. Ag/AgCl) at 70 mV/s for 50
cycles (∼24 min), placed in the growth medium with bacteria, significantly increased microbial adhesion
when compared to SPCE without electrochemical stimulation. The electron-transfer effect between the
adsorbed microorganism and electrode surface was further studied by AC impedance spectroscopy to
confirm the accelerated microbial immobilization. Stable photosynthetic electron transport chain from
immobilized bacteria through SPCE was achieved.
ISSN: 0013-4686
DOI: 10.1016/j.electacta.2012.03.029
Appears in Collections:化學系所

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