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  • Title: Enhanced bioelectrochemical performance of microbial fuel cell with titanium dioxide-attached dual metal organic frameworks grown on zinc aluminum - layered double hydroxide as cathode catalyst.
    Author: Chen J, Yang J, Wang X, Yang D, Wang X, Zhang Y, Du Y, Wang Y, Wei Q, Wang R, Liu Y, Yang Y.
    Journal: Bioresour Technol; 2022 May; 351():126989. PubMed ID: 35288269.
    Abstract:
    In this study, a three-step distributed feeding method was used to prepare TiO2-attached dual CoZn-metal organic frameworks growing on ZnAl-layered double hydroxide (TiO2@ZIF-67/ZIF-8@ZnAl-LDH) as cathode catalyst of microbial fuel cell (MFC). The composite material was a composite core-shell structure constructed by multi-layer coating with sheet-like ZnAl-LDH as the base, dual MOFs as the magnetic core and TiO2 as the rough surface. The composite material had crystal planes (009), (110), (101) interface. The rough surface, core-shell core and polyhedral structure of TiO2@ZIF-67/ZIF-8@ZnAl-LDH were observed. The complete distribution of Ti, Zn, Al, and Co in the material was observed and offered active sites. The contents of Ti (15.97 %), Al (5.53 %), Na (5.04 %), N (3.52%), Zn (1.47 %) were found out. TiO2@ZIF-67/ZIF-8@ZnAl-LDH was excellent in electrochemical activity and the maximum power density was 409.6 mW/m2, the stable continuous output voltage was 538.4 mV for 8 d.
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