Towards the understanding of the effect of oxygen on the electrocatalytic activity of microbial biofilms: a spectroelectrochemical study

Towards the understanding of the effect of oxygen on the electrocatalytic activity of microbial biofilms: a spectroelectrochemical study
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了解氧气对微生物生物膜电催化活性的影响:光谱电化学研究

DOI:
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发表时间:
2015
期刊:
影响因子:
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通讯作者:
H. K. Ly
H. K. Ly
中科院分区:
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文献类型:
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作者:
D. Millo;H. K. Ly

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在缺氧条件下,生长在电极上的金属呼吸细菌的微生物生物膜氧化有机底物并产生电催化电流。将生物膜暴露于分子氧会完全抑制电催化电流。在同一混合培养物生物膜上同时进行的计时安培分析法和共振拉曼散射表明,电流抑制是由将细胞代谢连接到电极的外膜细胞色素的快速氧诱导氧化引起的。
Under anoxic conditions, microbial biofilms of metal-respiring bacteria grown on electrodes oxidize an organic substrate and generate electrocatalytic currents. Exposing the biofilm to molecular oxygen suppresses the electrocatalytic current completely. Chronoamperometry and resonance Raman scattering performed simultaneously on the same mixed culture biofilm show that current suppression is caused by the rapid oxygen-induced oxidation of the outer membrane cytochromes wiring the cell metabolism to the electrode.
DOI: 10.1038/nchem.2022
发表时间: 2014-09-01
期刊: NATURE CHEMISTRY
影响因子: 21.8
作者:
Plumere, Nicolas;Ruediger, Olaf;Lubitz, Wolfgang
通讯作者: Lubitz, Wolfgang