Paper Title:
Influence of Ultrasonic Irradiation Power on the Synthesis Kinetics of Nano-Hydroxyapatite Prepared by a Wet Chemical Process
  Abstract

Nano-particle hydroxyapatite (HAp) was directly prepared by a wet chemical precipitation method with the aid of ultrasonic irradiation in solution using Ca(NO3)2, NH4H2PO4 and NH2CONH2 as source materials. The nano-HAp formation rate at different preparation temperatures and under different ultrasonic irradiation powers was measured and the influence of ultrasonic irradiation power on the synthesis kinetics of the nano-hydroxyapatite was investigated. It was found that the nano-HAp content increased with the increase of ultrasonic irradiation power, preparation temperature and reaction time. Under different ultrasonic irradiation power, an Arrhenius relationship was found between the nano-HAp formation rate and preparation temperature. It showed that with the increase of ultrasonic irradiation power from 100W to 200W and 300W, the synthesis activation energy of nano-HAp crystallites decrease from 63.2 KJ/mol to 59.9 KJ/mol and 48.1 kJ/mol respectively by calculation.

  Info
Periodical
Key Engineering Materials (Volumes 336-338)
Edited by
Wei Pan and Jianghong Gong
Pages
2092-2095
DOI
10.4028/www.scientific.net/KEM.336-338.2092
Citation
L. Y. Cao, C. B. Zhang, J. F. Huang, "Influence of Ultrasonic Irradiation Power on the Synthesis Kinetics of Nano-Hydroxyapatite Prepared by a Wet Chemical Process", Key Engineering Materials, Vols. 336-338, pp. 2092-2095, 2007
Online since
April 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Marija Jevtić, Dragan P. Uskokovic
Abstract:The main purpose of the present work was to investigate the influence of urea concentration on hydroxyapatite (HAp) synthesis. Calcium...
285
Authors: Jing Di Chen, Ying Jun Wang, Xiao Feng Chen
Abstract:Owing to the unique characters of the hybrid scaffold components, a novel biodegradable porous composite scaffold was prepared. The nano...
1252
Authors: Wei Zhou, Jun Zheng
Chapter 2: Materials Science and Engineering
Abstract:The present paper proposes a new purifying strategy which can be applied in rapid synthesis of nano-sized calcium phosphate based...
258
Authors: Ying Chun Wang, Shi Xiong Zhang, Mei Chun Wang
Chapter 1: Materials and Mechanical Engineering
Abstract:In recent years there has been increasing interest concerning the synthesis of hollow materials in nanometer to micrometer dimensions. Hollow...
72
Authors: Soheila Rahavi, Ahmad Monshi, Rahmatollah Emadi, Ali Doostmohammadi, Hamed Akbarian
Abstract:The study reported here focuses on the crystallite size of synthetic hydroxyapatite (HAp) obtained using sol-gel method and natural HAp...
28