Journal
DIAMOND AND RELATED MATERIALS
Volume 65, Issue -, Pages 176-182Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2016.03.021
Keywords
Carbon dots; Luminescence; Photocatalysis; Upconversion; Oxidative radicals; MR
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Luminescent carbon nanodots (CNDs) have been obtained by hydrothermal processing of ascorbic acid (AA) and ethanolamine (EN). The resulting N-doped carbon nanostructures exhibit interesting and tunable emission capabilities with a dual behavior as down-converters and more importantly, as up-converting quantum dots. Herein, we also evaluate the optical response of these CNDs to selectively generate highly reactive oxidative hydroxyls (center dot OH) upon irradiation with different light-emitting diodes (LEDs) in the visible-NIR range. Finally, the role of the N-doped CNDs as nano-sensitizers to maximize the solar light harvesting and expand the photo-catalytic response of a commonly used UV-active catalyst such as TiO2 was successfully tested in the degradation of an organo-chlorinated compound under visible light. (C) 2016 Elsevier B.V. All rights reserved.
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