Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 1147, Issue -, Pages 148-154Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molstruc.2017.06.091
Keywords
Molecular modeling; PM6; FTIR spectroscopy; CHA-ZnO nanocomposites
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Zinc oxide (ZnO)-doped carbonate substituted hydroxyapatite (CHA) was successfully prepared with different ZnO contents up to 3 wt% and then samples were subjected to study with Fourier transform infrared (FTIR) spectroscopy. FTIR indicated that the interaction is physical and consequently molecular modeling was consulted to understand the effect of ZnO upon CHA. A model molecule of Ca-10(PO4)(6)(OH)(2).14H(2)O was built then interacted with Zn with different schemes through 4 active sites namely O of (PO4); 0 of OH; Ca of Ca(OH)(2) and P of (PO4). For each interaction, two possibilities were tried; one through oxygen and the other through zinc of ZnO. The interaction of ZnO with CHA resulted in changes in the physical properties such as the final heat of formation, ionization potential, and even molecular dimensions. This may be due to the change in the electronic distribution which in turn changes the total dipole moment and hence the reactivity that could also affect the physical properties. (c) 2017 Elsevier B.V. All rights reserved.
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