Synthesis, characterization, and biological activity of some novel Schiff bases and their Co(II) and Ni(II) complexes: A new route for Co 3 O 4 and NiO nanoparticles for photocatalytic degradation of methylene blue dye
| Autor: | Mostafa Y. Nassar, Hisham M. Aly, Ehab A. Abdelrahman, M. E. Moustafa |
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| Rok vydání: | 2017 |
| Předmět: |
Schiff base
Dibenzoylmethane Organic Chemistry Non-blocking I/O Inorganic chemistry Triazole 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Analytical Chemistry Inorganic Chemistry chemistry.chemical_compound chemistry Photocatalysis 0210 nano-technology Hydrogen peroxide Thermal analysis Spectroscopy Methylene blue Nuclear chemistry |
| Zdroj: | Journal of Molecular Structure. 1143:462-471 |
| ISSN: | 0022-2860 |
| DOI: | 10.1016/j.molstruc.2017.04.118 |
| Popis: | Six novel Co(II) and Ni(II)-triazole Schiff base complexes have been successfully synthesized by refluxing the prepared triazole Schiff bases with CoCl 2 ·6H 2 O or NiCl 2 ·6H 2 O. The Schiff base ligands were prepared through condensation of 3-R-4-amino-5-hydrazino-1,2,4-triazole with dibenzoylmethane [R H, CH 3 , and CH 2 CH 3 ; namely, L1, L2, and L3, respectively]. The prepared Co(II) and Ni(II) complexes have been identified using elemental analysis, FT-IR, UV–Vis, magnetic moment, conductivity, and thermal analysis. On the basis of the conductance results, it was concluded that all the prepared complexes are nonelectrolytes. Interestingly, the prepared Co(II) and Ni(II) complexes were employed as precursors for producing of Co 3 O 4 and NiO nanoparticles, respectively. The produced nanostructures have been identified by XRD, HR-TEM, FT-IR and UV–Vis spectra. The produced nanoparticles revealed good photocatalytic activity for the degradation of methylene blue dye under UV illumination in presence of hydrogen peroxide. The percent of degradation was estimated to be 55.71% in 420.0 min and 90.43% in 360.0 min for Co 3 O 4 and NiO, respectively. Moreover, the synthesized complexes, nano-sized Co 3 O 4 , and NiO products have been examined, employing modified Bauer- Kirby method, for antifungal ( Candida albicans and Aspergillus flavus ) and antibacterial ( Staphylococcus aureus and Escherichia coli ) activities. |
| Databáze: | OpenAIRE |
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