Jellyfish bio-inspired Fe@CNT@CuNC derived from ZIF-8 for cathodic oxygen reduction  

作　　者：Kai Cheng Zequan Liu Demin Jiang Min Song Yuqiao Wang 

机构地区：[1]Research Center for Nano Photoelectrochemistry and Devices,School of Chemistry and Chemical Engineering,Southeast University,Nanjing 211189,China [2]Yangtze River Delta Carbon Neutrality Strategy Development Institute,Southeast University,Nanjing 210096,China [3]School of Energy and Environment,Southeast University,Nanjing 210096,China

出　　处：《Nano Research》2024年第4期2352-2359,共8页纳米研究（英文版）

基　　金：supported by the Joint Funds of NUAASEU(No.6907046031);the National Natural Science Foundation of China(Nos.52076043 and 52222609).

摘　　要：Biomimetics provides guidance to design and synthesize advanced catalysts for oxygen reduction reaction in microbial fuel cells(MFCs).Herein,jellyfish-inspired Fe clusters on carbon nanotubes connected with CuNC(Fe@CNT@CuNC)were designed and prepared by using zeolitic imidazolate framework(ZIF)-8 precursors to imitate the organic texture and function of jellyfish.The antibacterial effect of Cu^(+)ions depressed the growth of cathode biofilm to ensure rapid mass transport.Fe clusters and CuNC connected by CNTs accelerated the electron transfer from Fe to CuNC.The optimization of oxygen adsorption was caused by electron redistribution between sites of Fe and Cu.Jellyfish-like catalysts achieved a half-wave potential of 0.86 V and onset potential of 0.95 V vs.reversible hydrogen electrode(RHE).MFCs gained the maximum power density of 1600 mW·m^(-2) after 500 h measurement.This work provides insights into the special design of advanced catalysts based on bio-inspiration and biomimetics.

关 键 词：bio-inspiration oxygen reduction reaction antibacterial ability microbial fuel cells density functional theory(DFT)rational design 

分 类 号：O64[理学—物理化学]