Enhanced bioelectricity output of microbial fuel cells via electrospinning zeolitic imidazolate framework-67/polyacrylonitrile carbon nanofiber cathode. (October 2021)

• Record Type: Journal Article
• Authors: Jiang, Nan; Huang, Manhong; Li, Jincheng; Song, Jialing; Zheng, Shengyang; Gao, Yanan; Shao, Mengyu; Li, Yulin
• Is Part Of: Bioresource technology. Volume 337(2021)
• Publication Date: 2021-10
• Subjects: Metal-organic frameworks -- Composite cathode -- Oxygen reduction reaction -- Bioelectrochemical system; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2021.125358
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: A novel electrode was fabricated by electrospinning PAN blended with ZIF-67. The ZIF-67/CNFs electrode showed excellent electrocatalytic activities for ORR. MFCs with ZIF-67/CNFs cathode had a maximum power density of 1.191±0.017 W m −2 . Geobacter was the highest proportion of microbial in ZIF-67/CNFs-MFC. Abstract: In this study, the zeolitic imidazolate framework-67 (ZIF-67) and electrospinning polyacrylonitrile membrane were combined to prepare electrospinning carbon nanofibers composite cathode (ZIF-67/CNFs) which could enhance the oxygen reduction reaction (ORR) performance of microbial fuel cells (MFCs) cathode. The optimum electrode 3 wt% ZIF-67/CNFs revealed the excellent ORR performance with a half-wave potential of −0.03 V vs. Ag/AgCl, which was more positive than Pt/C-CC (-0.09 V vs. Ag/AgCl). The highest output voltage (607±9 mV) and maximum power density (1.191±0.017 W m −2 ) were obtained when the prepared ZIF-67/CNFs electrode was applied to the cathode of MFC (ZIF-67/CNFs-MFC). In addition, ZIF-67/CNFs-MFC showed the best pollutant removal effect. Geobacter was the highest proportion of microbial in ZIF-67/CNFs-MFC. The results have shown that the application of ZIF-67/CNFs electrode to MFC cathode is promising.