Eco-friendly carbon-nanodot-based fluorescent paints for advanced photocatalytic systems

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Fluorescent carbon nanomaterials, especially zero-dimensional (oD) carbon nanodots (CDs), are widely used in broad biological and optoelectronic applications. CDs have unique characteristics such as strong fluorescence, biocompatibility, sun-light response, and capability of mass-production. Beyond the previous green CD obtained from harmful natural substances, we report a new type of fluid-based fluorescent CD paints (C-paints) derived from polyethylene glycol (PEG; via simple ultrasound irradiation at room temperatures) and produced in quantum yields of up to similar to 14%. Additionally, C-paints possess a strong, UV- and visible-light-responsive photoluminescent (PL) property. Most especially, C-paints, by incorporation into a photocatalytic system, show additional roles in the emission of fluorescent light for activation of TiO2 nanoparticles (NPs) and the resultant detoxification of most organic dyes, thus further enabling embarkation in advanced water purification.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2015-07
Language
English
Article Type
Article
Keywords

QUANTUM DOTS; NANOPARTICLES; LUMINESCENCE; GRAPHITE; GRAPHENE

Citation

SCIENTIFIC REPORTS, v.5

ISSN
2045-2322
DOI
10.1038/srep12420
URI
http://hdl.handle.net/10203/200670
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