Pentosan-derived water-soluble carbon nano dots with substantial fluorescence: Properties and application as a photosensitizer

Water-soluble carbon nano dots (CNDs) with high fluorescence are synthesized from liquid by-products of hydrothermal carbonization of pentosan, the by-products of pulp refining. CNDs can be effectively used as photo sensitizer in the CNDs/TiO2 system for methyl blue (MB) degradation under visible light irradiation, spectral response range of CNDs/TiO2 system can be widen from only UV region to part visible-light region (400-550 nm).