ArticleScientific reports2016
Graphene oxide-dependent growth and self-aggregation into a hydrogel complex of exoelectrogenic bacteria.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.
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Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it, 78 citations in OpenAlex.
- Recent Implementations of Hydrogel-Based Microbial Electrochemical Technologies (METs) in Sensing Applications.Sensors (Basel, Switzerland) · 2023Pooled it
- Polyphasic Characterization ofMicroorganisms · 2023Article
- Isolation and Polyphasic Characterization ofMicroorganisms · 2021Article
- Biocatalyst physiology and interplay: a protagonist of MFC operation.Environmental science and pollution research international · 2021Review
- Bacterial extracellular electron transfer: a powerful route to the green biosynthesis of inorganic nanomaterials for multifunctional applications.Journal of nanobiotechnology · 2021Review
- Review
- Current recovery from sewage wastewater using electrochemically oxidized graphite felt.RSC advances · 2019Article
- Direct Interspecies Electron Transfer Mediated by Graphene Oxide-Based Materials.Frontiers in microbiology · 2019Article
- Bacteroides sedimenti sp. nov., isolated from a chloroethenes-dechlorinating consortium enriched from river sediment.Journal of microbiology (Seoul, Korea) · 2018Article
- Graphene oxide electrodeposited electrode enhances start-up and selective enrichment of exoelectrogens in bioelectrochemical systems.Scientific reports · 2017Article
- Electricity Recovery from Municipal Sewage Wastewater Using a Hydrogel Complex Composed of Microbially Reduced Graphene Oxide and Sludge.Materials (Basel, Switzerland) · 2016Article
Corrections and comments
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Graphene oxide (GO) is reduced by certain exoelectrogenic bacteria, but its effects on bacterial growth and metabolism are a controversial issue. This study aimed to determine whether GO functions as the terminal electron acceptor to allow specific growth of and electricity production by exoelectrogenic bacteria. Cultivation of environmental samples with GO and acetate as the sole substrate could specifically enrich exoelectrogenic bacteria with Geobacter species predominating (51-68% of the total populations). Interestingly, bacteria in these cultures self-aggregated into a conductive hydrogel complex together with biologically reduced GO (rGO). A novel GO-respiring bacterium designated Geobacter sp. strain R4 was isolated from this hydrogel complex. This organism exhibited stable electricity production at >1000 μA/cm(3) (at 200 mV vs Ag/AgCl) for more than 60 d via rGO while temporary electricity production using graphite felt. The better electricity production depends upon the characteristics of rGO such as a large surface area for biofilm growth, greater capacitance, and smaller internal resistance. This is the first report to demonstrate GO-dependent growth of exoelectrogenic bacteria while forming a conductive hydrogel complex with rGO. The simple put-and-wait process leading to the formation of hydrogel complexes of rGO and exoelectrogens will enable wider applications of GO to bioelectrochemical systems.
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