Synthesis, characterization and gas sensing property of hydroxyapatite ceramic

Bulletin of materials science

R C Aiyer³  R S Khairnar²  C V Ramakrishna¹  M P Mahabole¹  B Sreedhar⁴ 

[1] School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431 606, India$$School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431 606, IndiaSchool of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431 606, India$$;School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431 606, India$$Department of Physics, University of Pune, Pune 411 007, India$$School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431 606, IndiaSchool of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431 606, India$$Department of Physics, University of Pune, Pune 411 007, India$$Department of Physics, University of Pune, Pune 411 007, IndiaSchool of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431 606, India$$Department of Physics, University of Pune, Pune 411 007, India$$;Department of Physics, University of Pune, Pune 411 007, India$$Department of Physics, University of Pune, Pune 411 007, IndiaDepartment of Physics, University of Pune, Pune 411 007, India$$;Indian Institute of Chemical Technology, Hyderabad 500 007, India$$Indian Institute of Chemical Technology, Hyderabad 500 007, IndiaIndian Institute of Chemical Technology, Hyderabad 500 007, India$$

关键词: Hydroxyapatite;    biomaterial;    ceramics;    gas sensor;    X-ray photoelectron spectroscopy;    infrared spectroscopy.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Hydroxyapatite (HAp) biomaterial ceramic was synthesized by three different processing routes viz. wet chemical process, microwave irradiation process, and hydrothermal technique. The synthesized ceramic powders were characterized by SEM, XRD, FTIR and XPS techniques. The dielectric measurements were carried out as a function of frequency at room temperature and the preliminary study on CO gas sensing property of hydroxyapatite was investigated. The XRD pattern of the hydroxyapatite biomaterial revealed that hydroxyapatite ceramic has hexagonal structure. The average crystallite size was found to be in the range 31�??54 nm. Absorption bands corresponding to phosphate and hydroxyl functional groups, which are characteristic of hydroxyapatite, were confirmed by FTIR. The dielectric constant was found to vary in the range 9�??13 at room temperature. Hydroxyapatite can be used as CO gas sensor at an optimum temperature near 125°C. X-ray photoelectron spectroscopic studies showed the Ca/P ratio of 1.63 for the HAp sample prepared by chemical process. The microwave irradiation technique yielded calcium rich HAp whereas calcium deficient HAp was obtained by hydrothermal method.

【 授权许可】

Unknown