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Synthesis, characterization and optical properties of chromium doped beta-Tricalcium phosphate

Alshemary, Ammar Z. and Goh, Yi-Fan and Shakir, Imran and Hussain, Rafaqa (2015) Synthesis, characterization and optical properties of chromium doped beta-Tricalcium phosphate. Ceramics International, 41 (1). pp. 1663-1669. ISSN 2728-842

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Official URL: http://dx.doi.org/10.1016/j.ceramint.2014.09.107

Abstract

The increasing demand to monitor the resorption of bone grafting materials in a biological environment has led the scientists to focus their attention towards the synthesis of photoluminescent biomaterials. Chromium (III) exhibits a strong photoluminescence signal, which can be used to monitor the flow of body fluids or resorption of Cr3+ doped biomaterials. In this study we have successfully doped Cr3+ ions into ß-Tricalcium phosphate [Ca3-(3/2)xCrxc(1/2)x(PO4)2] structure by a two steps process: microwave assisted wet precipitation of calcium deficient apatite [Ca9-xCrx(HPO4)(PO4)5(OH)] followed by its calcination at 1200 °C for 2 h. Physicochemical properties of the samples analyzed by X-ray diffraction (XRD), X-ray fluorescence spectrometry (XRF) and Fourier transform infrared (FTIR), Field emission scanning electron microscopy (FESEM). XRD and FTIR data confirmed the formation of crystalline Cr3+ doped ß-Tricalcium phosphate. XRD data revealed a gradual decrease in the lattice parameters along the a and c-axis with increasing concentration of Cr3+ ions. The FESEM analysis showed a change in morphology from stacked nanoflakes to micron sized spherical particles upon Cr3+ doping into the crystal structure. Optical spectra and photoluminescence spectra of Cr3+ doped ß-Tricalcium phosphate confirmed their possible biomedical use as fluorescent probes.

Item Type:Article
Uncontrolled Keywords:biomaterial, chromium, optical properties, photoluminescence, ß-Tricalcium phosphate (ßTCP)
Subjects:A General Works
ID Code:58871
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:26 Feb 2017 08:53

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