Abstract
The graphitic carbon nitride-titanium dioxide-graphene aerogel (g-C3N4-TiO2-GA) composites were facilely assembled by a hydrothermal approach combined with freeze drying. The adsorptivity for rhodamine B (RhB, 20.0 mg L−1, 25 mL) within 1 h over 5.0 mg of the composites was as high as 96.5% in dark and could be up to 98.4% under visible light irradiation. Furthermore, the resulting composites also displayed satisfactory cyclic stability and the removal efficiency could be 75.6% even after four cycles of removal. In addition, a photocatalytic mechanism was proposed for the composite. The result demonstrated that the g-C3N4-TiO2-GA composites could be effectively used for the elimination of organic dyes under visible light irradiation because of their unique 3D hierarchical porous structure and the synergistic effect among the components.
Original language | English |
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Pages (from-to) | 96-103 |
Number of pages | 8 |
Journal | Separation and Purification Technology |
Volume | 194 |
DOIs | |
Publication status | Published - 3 Apr 2018 |
Keywords
- Adsorption
- g-C N -TiO -graphene aerogel 3 4 2
- Photocatalysis
- Rhodamine B
- Visible light
ASJC Scopus subject areas
- Analytical Chemistry
- Filtration and Separation