- Tytuł:
- Copper foam supported g‑C3N4‑metal–organic framework bacteria biohybrid cathode catalyst for CO2 reduction in microbial electrosynthesis
- Autorzy:
-
Shrivastav, Vishal
Nogala, Wojciech
Min, Booki
Mansi
Sundriyal, Shashank
Tiwari, Umesh K.
Holdynski, Marcin
Noori, Md Tabish
Giri, Balendu Sekhar
Gupta, Bhavana - Wydawca:
- Springer Science and Business Media LLC
- Cytata wydawnicza:
- Noori, M.T., Mansi, Sundriyal, S. et al. Copper foam supported g-C3N4-metal–organic framework bacteria biohybrid cathode catalyst for CO2 reduction in microbial electrosynthesis. Sci Rep 13, 22741 (2023). https://doi.org/10.1038/s41598-023-49246-3 https://doi.org/10.1038/s41598-023-49246-3
- Opis:
- Microbial electrosynthesis (MES) presents a versatile approach for efficiently converting carbon dioxide (CO2) into valuable products. However, poor electron uptake by the microorganisms from the cathode severely limits the performance of MES. In this study, a graphitic carbon nitride (g-C3N4)-metal–organic framework (MOF) i.e. HKUST-1 composite was newly designed and synthesized as the cathode catalyst for MES operations. The physiochemical analysis such as X-ray diffraction, scanning electron microscopy (SEM), and X-ray fluorescence spectroscopy showed the successful synthesis of g-C3N4-HKUST-1, whereas electrochemical assessments revealed its enhanced kinetics for redox reactions. The g-C3N4-HKUST-1 composite displayed excellent biocompatibility to develop electroactive biohybrid catalyst for CO2 reduction. The MES with g-C3N4-HKUST-1 biohybrid demonstrated an excellent current uptake of 1.7 mA/cm2, which was noted higher as compared to the MES using g-C3N4 biohybrid (1.1 mA/cm2). Both the MESs could convert CO2 into acetic and isobutyric acid with a significantly higher yield of 0.46 g/L.d and 0.14 g/L.d respectively in MES with g-C3N4-HKUST-1 biohybrid and 0.27 g/L.d and 0.06 g/L.d, respectively in MES with g-C3N4 biohybrid. The findings of this study suggest that g-C3N4-HKUST-1 is a highly efficient catalytic material for biocathodes in MESs to significantly enhance the CO2 conversion.
- Dostawca treści:
- Repozytorium Centrum Otwartej Nauki
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