| Autor: |
Klumdoung, Pattarinee, Pukjaroon, Salakchit, Pankaew, Piyapong |
| Zdroj: |
Applied Mechanics and Materials; October 2015, Vol. 804 Issue: 1 p291-294, 4p |
| Abstrakt: |
In this study, 2 wt% NiFe2O4/HAp composite ceramic was fabricated by the solid state reaction method to form a composite with the future potentiality to remove heavy metals. HAp powders were synthesized by precipitation using Ca (NO3)2 as Ca source, (NH4)2HPO4 as the P source and ammonia as a pH adjuster. NiFe2O4 powders were prepared by mixing and milling NiO and Fe2O3 powders (using stoichiometry ratio) in ethanol and sequent dehydration and then calcination. 2 wt% of NiFe2O4 powders were milled with 98 wt% of HAp powders for 10 minutes before uniaxial pressing and sintering at 1200 °C for 3 hours to form 2 wt% NiFe2O4/HAp composite ceramic. The prepared ceramic was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). XRD result shown that 2 wt% NiFe2O4/HAp composite ceramic with only HAp and NiFe2O4 phases obtained. FT-IR results revealed vibration bands of standard HAp and indicated the interaction between ZnFe2O4 and HAp. For the SEM result, the morphology of the prepared ceramic revealed nanoand micro sized grains. These results could lead us to the development of a method for a NiFe2O4/HAp composite ceramic optimized for specific heavy metal removal applications. |
| Databáze: |
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