Related Experiment Video
Updated: Sep 24, 2025

Self-standing Electrochemical Set-up to Enrich Anode-respiring Bacteria On-site
Published on: July 24, 2018
Extracellular electron uptake from carbon-based π electron surface-donors: oxidation of graphite sheets by
Charalampos Tselios1, Marios Papageorgiou1, Constantinos Varotsis1
1Cyprus University of Technology, Department of Environmental Science and Technology Lemesos Cyprus c.varotsis@cut.ac.cy +357 25002802.
Abstract:
In this work we report Raman and FTIR evidence for extracellular electron uptake by Sulfobacillus thermosulfidooxidans from the solid phase carbon-based π-electron donor surface of graphite sheets. The primary step in the reaction is the intercalation of water on the surface of graphite followed by the formation of EPS and proceeds to form graphite oxide (GO) with a Raman I D/I G = 0.3 ratio which represents the highest defect content in the carbon lattice reported by bio-oxidation process. We propose and discuss a direct extracellular electron transfer mechanism via outer membrane redox proteins for the electron transfer.
Related Concept Videos
Metabolism of Chemolithotrophs
Anoxygenic Photosynthesis
Microbial Nutrition
Sulfur Assimilation
Carbon-dioxide Fixation
Anoxygenic Phototrophic Bacteria

