Structural and Spectroscopic Studies of Hydroxyapatite Nanorods Formed via Microwave‐Assisted Synthesis Route
In the present investigation Hydroxyapatite [
10( Ca 4)6( PO )2:( OH )] nanorods
were synthesized using microwave irradiation technique taking ethylene diamine tetra‐acetic acid as a complexing reagent. Hydroxyapatite precursor obtained using microwave irradiation was subjected to differential thermal analysis. Later it was calcined in the temperature range 450°C–900°C.
The crystal, grain, and bonding structures of resulting HAp were characterized structurally using HAp X‐ray diffraction and scanning electron microscopy ( SEM) techniques and spectroscopically using Fourier
transform infrared ( FT‐ IR) and Raman techniques. The structural and spectroscopic characterizations of precursor revealed the formation of hydrated . HAp SEM
images of the specimens calcined at 600°C and 900°C are presented. This study clearly reveals that nanorods are not formed below 700°C and nanorods are formed only after heat treatment of precursor at 700°C and above. The diameter
of nanorods was estimated to be ~200 nm. No nanostructures were found to be formed if the precursor is calcined below 700°C. HAp FT‐ IR and Raman spectra of samples obtained
after calcinations at 700°C and above further confirm the formation of HAp nanorods.
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Document Type: Research Article
Publication date: September 1, 2012