Self-assembly of graphene oxide and Shewanella oneidensis MR-1 formed a conductive bio-abiotic composite for enhancing microbial electrosynthesis performance

Dan Luo, Hong Ding, Ting Guo, Xiangling Li, Tianshun Song and Jingjing Xie

Renewable Energy, 2023, vol. 215, issue C

Abstract: Microbial electrosynthesis (MES) is an attractive technology for converting CO2 into chemicals. In this technique, electrons are acquired either directly or indirectly through H2 in the cathode. Shewanella oneidensis MR-1 can perform hydrogen evolution reaction via reverse electron transfer at the cathode. In this study, the self-assembly of graphene oxide and S. oneidensis MR-1 formed a conductive bio-abiotic composite as a cathode for MES with Clostridium ljungdahlii, obtaining more biocatalysts for hydrogen evolution and enhancing electron transfer rate. The average H2 production rate with the conductive bio-abiotic composite was 41.51 ± 2.54 × 102 mol d−1, while the undecorated carbon felt was 12.96 ± 1.09 × 102 mol d−1. Consequently, acetate and butyrate yields were 0.18 g L−1 d−1 and 0.07 g L−1 d−1, which increased by 2.1 and 1.7 times those of the control, respectively. This work provides new opportunities for constructing a highly efficient cathode via biotic-abiotic hybrid composite for improving MES performance.

Keywords: Microbial electrosynthesis; Clostridium ljungdahlii; Shewanella oneidensis; Hydrogen; Graphene (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148123009321
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:215:y:2023:i:c:s0960148123009321

DOI: 10.1016/j.renene.2023.119018

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().