MIL-100@ZIF-67 Enhanced Microbial Electroreduction of CO₂ to Produce CH₄ by Promoting Electron Transfer

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

To improve the conversion rate of carbon dioxide (CO2) to methane (CH4) in a microbial electrochemical system (MES), zeolitic imidazolate framework ZIF-67(Co) with electron storage properties was first grown situ on MIL-100(Fe) excellent CO2 adsorption by hydrothermal method. The obtained binary core–shell MIL@ZIF material then adsorbed felt cathode grow biofilms composed electroactive microorganisms for characterization and testing an MES. This exhibited CH4 production 0.42 mmol LR–1 d–1, along impressive faradaic efficiency 96.4%. Three-dimensional excitation–emission matrix spectra extracellular polymeric substances indicated that those containing higher contents humic acid shifted pairs converted redox states facilitate transfer. enriched hydrogenotrophic methanogens electrogenic bacteria communities enhanced gene expression electrically conductive pili cytochrome C strengthen interspecies storage, reinforcing transfer chains boosting yield factor 10.7.

Language: Английский

Recent advances in enhancing microbial electrosynthesis performance: Innovations in cathode design and reactor engineering

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 103, P. 528 - 537

Published: Jan. 21, 2025

Language: Английский