摘要
以Ca(NO_3)_2·4H_2O,(NH_4)_2HPO_4和NH_4HCO_3为前驱物,以聚乙二醇为分散剂,采用化学沉淀法辅以微波加热制备了含碳酸根离子的纳米缺钙羟基磷灰石粉体,讨论了溶液pH值、微波辐射时间、微波功率等工艺条件对所制得的羟基磷灰石粉体钙磷莫尔比的影响。用XRD,IR,SEM对所制得的粉体进行了分析。研究结果表明:在pH为8～9的范围内,以一个适中的微波功率辐射处理反应溶液1 h,能够在较短时间内合成含碳酸根离子的、晶粒尺寸为60 nm左右的缺钙羟基磷灰石粉体。
Hydroxyapatite nanoparticles were prepared by a chemical precipitation method assisted with microwave heating using Ca（NO3）2·4H2O, （NH4）2HPO4 and NH4HCO3 as starting materials. The PEG was used as dispersing agent. The effects of different technical parameters such as pH values of the solution, time and power of microwave irradiation on the Ca/P molar ratios of products were discussed. The synthesized powders were measured by XRD, IR and SEM. The results showed that calcium-deficient carbonated hydroxyapatite nanoparticles can be quickly synthesized at 8～9 pH value by irradiating for 1 h under a moderate microwave power and the average grain size was around 60 nm.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2008年第A01期94-97,共4页
Rare Metal Materials and Engineering
基金
重庆市自然科学基金(CSTC
2006BB4179)
关键词
羟基磷灰石
化学沉淀法
微波加热
hydroxyapatite
precipitation method
microwave heating
