| 石墨烯修饰碳毡电极与微生物相互作用过程中的电化学特征 |
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| 引用本文： | 李云姣,朱维晃,郑飞,文虎.石墨烯修饰碳毡电极与微生物相互作用过程中的电化学特征[J].环境科学学报,2018,38(11):4292-4298. |
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| 作者姓名： | 李云姣 朱维晃 郑飞 文虎 |
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| 作者单位： | 1. 西安建筑科技大学, 陕西省环境工程重点实验室, 西安 710055;2. 西安建筑科技大学, 西北水资源与环境生态教育部重点实验室, 西安 710055,1. 西安建筑科技大学, 陕西省环境工程重点实验室, 西安 710055;2. 西安建筑科技大学, 西北水资源与环境生态教育部重点实验室, 西安 710055,1. 西安建筑科技大学, 陕西省环境工程重点实验室, 西安 710055;2. 西安建筑科技大学, 西北水资源与环境生态教育部重点实验室, 西安 710055,1. 西安建筑科技大学, 陕西省环境工程重点实验室, 西安 710055;2. 西安建筑科技大学, 西北水资源与环境生态教育部重点实验室, 西安 710055 |
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| 基金项目： | 国家自然科学基金（No.41373093） |
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| 摘 要： | 在希瓦氏菌(Shewanella putrefaciens)呼吸驱动下,成功制备了生源性还原态的氧化石墨烯(r-GO)修饰的碳毡电极,进一步研究了r-GO修饰碳毡电极与微生物相互作用的电化学特征.结果表明:经r-GO修饰的碳毡电极与微生物的相互作用程度得到显著提升,这主要是由于修饰后电极的扩散内阻(R_(dif))得到快速降低的结果.将r-GO修饰后的碳毡电极作为阳极应用于微生物燃料电池(MFC)中,经微生物呼吸驱动下的石墨烯修饰电极,由于R_(dif)降低导致电极的电化学活性增强,使得电极和微生物相互作用程度得到提升,从而缩短了MFC启动时间,提高了MFC的产电能力.研究进一步表明,r-GO对电极的修饰,调控了对电极电化学活性及生源性电子向电极表面的传递过程.
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| 关 键 词： | 石墨烯 电极修饰 微生物-电极相互作用 |
| 收稿时间： | 2018/4/18 0:00:00 |
| 修稿时间： | 2018/6/6 0:00:00 |
Electrochemical characteristics of the interaction between graphene modified carbon felt electrode and microbe |
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| LI Yunjiao,ZHU Weihuang,ZHENG Fei and WEN Hu.Electrochemical characteristics of the interaction between graphene modified carbon felt electrode and microbe[J].Acta Scientiae Circumstantiae,2018,38(11):4292-4298. |
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| Authors: | LI Yunjiao ZHU Weihuang ZHENG Fei and WEN Hu |
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| Institution: | 1. Shaanxi Key Laboratory of Environmental Engineering, Xi''an University of Architecture and Technology, Xi''an 710055;2. Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi''an University of Architecture and Technology, Xi''an 710055,1. Shaanxi Key Laboratory of Environmental Engineering, Xi''an University of Architecture and Technology, Xi''an 710055;2. Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi''an University of Architecture and Technology, Xi''an 710055,1. Shaanxi Key Laboratory of Environmental Engineering, Xi''an University of Architecture and Technology, Xi''an 710055;2. Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi''an University of Architecture and Technology, Xi''an 710055 and 1. Shaanxi Key Laboratory of Environmental Engineering, Xi''an University of Architecture and Technology, Xi''an 710055;2. Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi''an University of Architecture and Technology, Xi''an 710055 |
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| Abstract: | The carbon felt electrode modified by microbially reduced graphene oxide (r-GO) was successfully prepared during the respiration process of Shewanella putrefaciens, and the electrochemical characteristics of the interaction between r-GO modified carbon felt electrode and microbe were studied. The results show that the interaction between the r-GO modified carbon felt electrode and the microbe is enhanced significantly, mainly due to the rapid decrease of the diffusion resistance (Rdif) of the r-GO modified electrode. The r-GO modified carbon felt electrode was further used as anode in microbial fuel cell (MFC), subsequently, the start-up of MFC was shortened and MFC performance was improved. The research indicates that the electrode modification with r-GO could regulate the electrode electrochemical activity and the electron transfer process between microbe and electrode. |
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| Keywords: | graphene electrode modification microbe-electrode interaction |
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