Abstract：
:Electrodes based on graphite, graphene, and carbon nanomaterials have been used in the anode chamber of microbial fuel cells (MFCs). Carbon quantum dots (C-dots) are a class of versatile nanomaterials hitherto not reported in MFCs. C-dots previously synthesized from coconut husk were reported to possess hydroxyl and carboxyl functional groups on their surface. The presence of these functional groups on a carbon matrix conferred on the C-dots the ability to conduct and transfer electrons. Formation of silver nanoparticles from silver nitrate upon addition of C-dots confirmed their reducing ability. DREAM assay using a mixed microbial culture containing C-dots showed a 172% increase in electron transfer activity and thus confirmed the involvement of C-dots in supplementing redox activity of a microbial culture. Addition of C-dots as a suspension in the anode chamber of an MFC resulted in a 22.5% enhancement in maximum power density. C-dots showed better performance as electron shuttles than methylene blue, a conventional electron shuttle used in MFCs.
journal_name
3 Biotechjournal_title
3 Biotechauthors
Vishwanathan AS,Aiyer KS,Chunduri LA,Venkataramaniah K,Siva Sankara Sai S,Rao Gdoi
10.1007/s13205-016-0552-1subject
Has Abstractpub_date
2016-12-01 00:00:00pages
228issue
2eissn
2190-572Xissn
2190-5738pii
10.1007/s13205-016-0552-1journal_volume
6pub_type
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