Journal
NANOSCALE
Volume 11, Issue 10, Pages 4428-4437Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nr10510c
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Funding
- Key Project of the National Ministry of Science and Technology [2016YFC0204204]
- Major Program of the National Natural Science Foundation of China [21590813]
- National Natural Science Foundation of China [21577012]
- Program of Introducing Talents of Discipline to Universities [B13012]
- Key Laboratory of Industrial Ecology and Environmental Engineering, China Ministry of Education
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The emergence of microbial fuel cell (MFC) technology that can effectively recycle renewable energy from organic pollutants has been regarded as a promising and environmentally friendly route that could be widely used in numerous fields. Here, a novel sustainable self-energy conversion system was successfully constructed to renewably synthesize carbon dots (CDs) via in situ coupling with a MFC system. Interestingly, the generation of CDs was found to largely enhance the electricity production performance of the MFC. Low-temperature electron paramagnetic resonance (EPR) spectroscopic measurements and electrochemical characterization analysis results confirmed that the as-prepared CDs exhibited wide-conversion fluorescence properties and exposed carbon-rich active oxygen sites, and demonstrated a suitable band gap as well as excellent electrocatalytic performance. As a result, the prepared CDs possess high photo-bioelectrocatalytic activity for efficient H-2 production, reaching 9.58 mol h(-1). Remarkably, CD-derived photocatalytic ink presented excellent contaminant elimination activity at the solid-solid interface. Thus, this work will provide a new platform for catalyst construction via a bio-assisted method towards the next generation of nano-photocatalytic inks for indoor contaminant removal.
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