Use of new quaternized water soluble zinc phthalocyanin derivatives for effective dye sensitization of TiO2
| Autor: | Gülsev Dilber, Mahmut Durmuş, Münevver Sökmen, Melek Koç Keşir |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Anatase
Materials science chemistry.chemical_element Nanoparticle 02 engineering and technology General Chemistry Zinc Crystal structure 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials Catalysis Biomaterials Chromium chemistry.chemical_compound chemistry Materials Chemistry Ceramics and Composites Photocatalysis 0210 nano-technology Methylene blue Nuclear chemistry |
| Zdroj: | Journal of Sol-Gel Science and Technology. 93:687-694 |
| ISSN: | 1573-4846 0928-0707 |
| DOI: | 10.1007/s10971-019-05109-w |
| Popis: | This study consist the production of Q-ZnPc/TiO2 nanocomposites using two quaternized zinc phthalocyanine molecules as sensitizer using sol–gel procedure. Water soluble non-peripheral and peripheral zinc(II)-phthalocyanine compounds; namely (Q-ZnPc)N and (Q-ZnPc)P; have been specially designed to increase the polarity of the macrocycle. Geometric orientation and polarity are important parameters for production of effective dye-sensitized TiO2 nanocomposites. The enhanced photocatalytic properties have been tested for methylene blue (MB, 10 mg/L) and chromium (VI)(10 mg/L) ions as model pollutant compounds using UV light (≥365 nm, 6 W) at 1 g/L catalyst mass. The nanoparticles were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). (Q-ZnPc)P/TiO2 has anatase crystal structure while (Q-ZnPc)N/TiO2 has amorphous character. These macromolecules seem to be effecting the orientation of the catalyst. Produced catalysts were so effective for both model pollutants that total degradation was achieved after 30 min exposure for Cr(VI) and almost 93.57% of MB was decomposed within 90 min exposure. Moreover, Cr(VI) removal% was extremely high even dark conditions. |
| Databáze: | OpenAIRE |
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