Journal
APPLIED SURFACE SCIENCE
Volume 315, Issue -, Pages 66-72Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2014.06.127
Keywords
Carbon nano dots; Hydrothermal; Pentosan; Photoluminescence; Photosensitizer
Categories
Funding
- Research Fund for the Fundamental Research Funds for the Central Universities [2572014EB01]
- National Natural Science Foundation of China [31170545]
- Fundamental Research Funds for the Central Universities [2572014AB17]
Ask authors/readers for more resources
The hydrothermal carbonization of monosaccharides and polysaccharides is widely used in the production of carbonaceous material with a desired structure. However, the liquid products are regarded as waste and discarded. Here, we report a facile approach for the synthesis of water-soluble carbon nano dots (CNDs) with substantial fluorescence from the liquid by-products of the hydrothermal carbonization of pentosan, thus the by-products of pulp refining. The synthesized CNDs are monodispersed spheres with abundant oxygen-containing groups and they have an average size of 30 nm. Quantum yield measurements revealed CNDs with substantial green photoluminescence (PL) without passivation. Additionally, excitation was independent, pH-sensitive and stable. The use of CNDs as a photosensitizer in the CND s/TiO2 system for methylene blue (MB) degradation under visible light irradiation is attractive. The spectral response range of the CNDs/TiO2 system can be widened from the UV region to a part of the visible light region (400-550 nm). (C) 2014 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available