Surface Chemical Characteristics and Adsorption Properties of Apatite
Surface Chemical Characteristics and Adsorption Properties of Apatite
复制标题
磷灰石的表面化学特性及吸附性能
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
Y. Wang
中科院分区：
文献类型：
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作者：
P. Somasundaran;Y. Wang
磷灰石的界面行为在很大程度上取决于其电化学性能，而电化学性能又取决于 pH 值、钙、磷酸盐和氟化物的浓度。除其他因素外，表面活性剂和聚合物在磷灰石上的吸附取决于磷灰石的界面电势。本文报道了合成羟基磷灰石和含氟天然矿石磷灰石的电动特性与 pH、KNO3、Ca(NO3)2、K2HPO4 和 KF 的函数关系，并对控制表面电荷产生的机制进行了综述。分析磷灰石在用浓缩 KF 溶液和方解石上清液处理后获得的电动效应，以确定其表面可能发生的化学变化。还讨论了不同pH值下离子表面活性剂以及离子和非离子聚合物在磷灰石上的吸附性能。
Interfacial behavior of apatites is governed to a large extent by their electrochemical properties which in turn are determined by pH, concentration of calcium, phosphate and fluoride. Adsorption of surfactants and polymers on apatite is dependent, among other factors, on the interfacial potential of the apatite. In this paper electrokinetic properties of synthetic hydroxyapatite and natural ore apatite containing fluoride are reported as a function of the pH, KNO3, Ca(NO3)2, K2HPO4 and KF and mechanisms governing the surface charge generation are reviewed. Electrokinetic effects obtained for apatite upon treatment with concentrated KF solutions and calcite supernatant are analyzed to determine possible chemical alterations of its surface. Adsorption properties of ionic surfactants and ionic and nonionic polymers on apatite at different pH values are also discussed.