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Bioelectrochemical Synthesis of High-quality Carbon Dots with Strengthened Electricity Output and Excellent Catalytic Performance

Abstract

The emerging microbial fuel cell (MFC) technology that could effectively recycle renewable energy from organic pollutants, has been regarded as a promising and environment-friendly route to be widely used in numerous fields. Here, a novel sustainable self-energy conversion system was successfully constructed to synthesize carbon dots (CDs) renewably via in situ coupled with MFC system. Interestingly, the generation of CDs largely enhanced the electricity production performance of MFC. Based on low-temperature electron paramagnetic resonance (EPR) and electrochemical characterization results analysis, it confirmed that the as-prepared CDs exhibited wide-converted fluorescence property, exposed carbon-rich oxygen active sites, suitable band gap as well as excellent electrocatalytic performance. As a result, it possessed high photo-bioelectrocatalytic activity for efficient H2 production, reaching to 9.58 μmol h-1. Remarkably, CDs derived photocatalytic ink presented excellent contaminant elimination activity at solid-solid interface. Thus, this work will provide a new platform for catalysts construction via bio-assisted method and the next generation of nano-photocatalytic inks towards the indoor contaminants removal.

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Publication details

The article was received on 29 Dec 2018, accepted on 08 Feb 2019 and first published on 12 Feb 2019


Article type: Paper
DOI: 10.1039/C8NR10510C
Citation: Nanoscale, 2019, Accepted Manuscript

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    Bioelectrochemical Synthesis of High-quality Carbon Dots with Strengthened Electricity Output and Excellent Catalytic Performance

    L. Zeng, X. Li, S. Fan, J. Li, J. Mu, M. Qin, L. Wang, G. Gan, M. O. Tadé and S. Liu, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C8NR10510C

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