Journal
ZEITSCHRIFT FUR KRISTALLOGRAPHIE-CRYSTALLINE MATERIALS
Volume 234, Issue 5, Pages 307-328Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/zkri-2018-2096
Keywords
Curcumin nanodispersions; kinetic study; photocatalytic activity; self-cleaning surfaces; ZnO nanoparticles
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Funding
- Sahand University of Technology [30.17676]
- Iran Nanotechnology Initiative Council [139069]
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Zinc oxide nanoparticles had been synthesized and encapsulated using Curcumin nanoemulsions, Zn(Cur)O NPs, under subcritical water conditions. The effects of temperature (120, 140 and 160 degrees C) and pH values of the reaction solution (4, 7 and 10) on the particle size, grain size, cristallinity, specific surface area, band gap, Urbach energy, morphology, photocatalytic activity and antibacterial properties of the prepared Zn(Cur)O NPs were evaluated using XRD, FT-IR, SEM, EDX and UV-Vis spectroscopy analysis. The obtained results indicate that the prepared spherical and rod shapes Zn(Cur)O NPs had a crystallite size distribution of 10-100 nm. Furthermore, the results reveal that most uniform Zn(Cur)O NPs with highest photocatalytic activity, quantum yield (0.161 mol.m(-2)s(-1)), specific surface area (242 m(2)/g), minimum band gap (2.62 eV) and Urbach energy (0.125 meV) were formed at 160 degrees C and natural pH. The highest antibacterial activities against both Gram positive and negative bacteria strains, were achieved using the synthesized Zn(Cur)O at 160 degrees C and basic pH(10).
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