Dynamically controlling the electrode potential of a microbial fuel cell-powered biocathode for sensitive quantification of nitrate
Dynamically controlling the electrode potential of a microbial fuel cell-powered biocathode for sensitive quantification of nitrate
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动态控制微生物燃料电池驱动的生物阴极的电极电位，用于硝酸盐的灵敏定量
DOI：
10.1016/j.electacta.2020.137661
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发表时间：
2021-02
影响因子：
6.6
通讯作者：
Liang Cheng
中科院分区：
文献类型：
--
作者：
Yang-Yang Yu;Xiao-Lu Ding;Wen-Zhu Quan;Qijian Niu;Zhen Fang;Malcom Frimpong Dapaah;Tianyan You;Xiang Xiao;Liang Cheng
微生物燃料电池（MFC）供电的生物阴极传感器有望用于自供电的水污染物监测。然而，当MFC供电的生物阴极用于检测不同浓度的目标分析物时，会发生广泛的电极电位波动，这反过来又限制了灵敏度和准确度。为了解决这个问题，第一次，一个电动模型的硝酸盐还原MFC供电的生物阴极开发。有趣的是，理论模拟和实验结果都揭示了一个最佳的外电阻，在此范围内，生物阴极电位动态控制的范围内，电子从电极到硝酸盐的生物阴极还原是动力学饱和，输出电流完全取决于硝酸盐浓度。在此基础上，首次研制出MFC供电的生物阴极传感器，该传感器在硝酸盐检测中表现出极低的检测限（0.11 μM）和较宽的线性检测范围（1-500 μM）。此外，该生物传感系统在复杂的废水环境中也表现出良好的可重用性和良好的可靠性。本工作开发了一种MFC供电的生物阴极传感系统，具有优异的硝酸盐检测能力，并展示了一种新的策略，以准确地定量与动态可控的电极电位的目标分析物。
Microbial fuel cell (MFC) powered biocathode sensors are promising for self-powered monitoring of water contaminants. However, the extensive electrode potential fluctuation would occur when the MFC powered biocathode were used for detecting different concentrations of target analytes, which in turn limits the sensitivity and accuracy. To address this, for the first time, an electrokinetic model for the nitrate reduction by an MFC powered biocathode was developed. Interestingly, both the theoretical simulation and experimental results disclosed an optimal external resistance, under which the biocathode potential was dynamically controlled in the range that electron transfer from the electrode to the nitrate though biocathodic reduction was kinetically saturated, and the output current was exclusively nitrate concentration depended. With this basis, an MFC powered biocathode sensor was for the first time developed, which showed an extremely low limit of detection (0.11 μM) and wide linear detection range (1–500 μM) in nitrate detection. Moreover, this biosensing system also exhibited good reusability and excellent reliability in complex wastewater environment. This work developed an MFC powered biocathode sensing system with excellent nitrate detection capacity, and demonstrated a novel strategy to accurately quantify the target analytes with dynamically controllable electrode potential.
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影响因子：
11.4
作者：
César I. Torres;Andrew K. Marcus;P. Parameswaran;B. Rittmann
通讯作者：
César I. Torres;Andrew K. Marcus;P. Parameswaran;B. Rittmann
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影响因子：
15.1
作者：
Yang-Yang Yu;Qian-Wen Cheng;Chong Sha;Yu-Xuan Chen;Sarasch;ra Naraginti;Yang-ChunYong
通讯作者：
Yang-ChunYong
影响因子：
12.6
作者：
Liu, Bingchuan;Lei, Yu;Li, Baikun
通讯作者：
Li, Baikun
影响因子：
12.6
作者：
Bui, Minh-Phuong N.;Brockgreitens, John;Abbas, Abdennour
通讯作者：
Abbas, Abdennour
影响因子：
12.6
作者：
Jiang, Yong;Liang, Peng;Huang, Xia
通讯作者：
Huang, Xia