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Efficient CO2 conversion by biocompatible N-doped carbon nanosheets coupled with Ralstonia eutropha: synergistic interactions between microbial and inorganic catalysts.
- Source :
- Green Chemistry; 6/21/2023, Vol. 25 Issue 12, p4760-4768, 9p
- Publication Year :
- 2023
-
Abstract
- Electricity-to-chemical production from a hybrid microbial–inorganic catalytic system relies upon biocompatible and efficient catalysts for hydrogen evolution reactions (HERs). Herein, metal-free nitrogen-doped carbon nanosheets (NC) with no metal leaching and little generation of reactive oxygen species were synthesized to develop an efficient hybrid catalytic system for converting CO<subscript>2</subscript> to poly-β-hydroxybutyrate. A yield of 538 mg L<superscript>−1</superscript> with an electricity-to-organic efficiency of 10.5% was obtained, which outcompetes most of the previous achievements. The coupling of NC with Ralstonia eutropha H16 reduced the HER overpotential by 200 mV. It was attributed to the doped N atoms facilitating the immobilization of bacteria on the catalysts to enhance hydrophilicity. Besides, the [NiFe]-hydrogenase from R. eutropha accelerates the desorption of H<subscript>2</subscript> and may provide an effective HER catalytic center on the catalysts. This study reveals the synergistic interactions between metal-free catalysts and R. eutropha H16 to promote H<subscript>2</subscript> production and CO<subscript>2</subscript> conversion. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14639262
- Volume :
- 25
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Green Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 164394053
- Full Text :
- https://doi.org/10.1039/d3gc00855j