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Nitrogen-doped luminescent carbon nanodots for optimal photo-generation of hydroxyl radicals and visible-light expanded photo-catalysis
- Source :
- Diamond and Related Materials. 65:176-182
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- 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 ( 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.
- Subjects :
- Photoluminescence
Materials science
Mechanical Engineering
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
Ascorbic acid
Photochemistry
01 natural sciences
Photon upconversion
0104 chemical sciences
Electronic, Optical and Magnetic Materials
chemistry.chemical_compound
chemistry
Quantum dot
Titanium dioxide
Materials Chemistry
Photocatalysis
Electrical and Electronic Engineering
0210 nano-technology
Luminescence
Visible spectrum
Subjects
Details
- ISSN :
- 09259635
- Volume :
- 65
- Database :
- OpenAIRE
- Journal :
- Diamond and Related Materials
- Accession number :
- edsair.doi...........4fb8e36afe06682a6af07d102982bbd0
- Full Text :
- https://doi.org/10.1016/j.diamond.2016.03.021