纳米羟基磷灰石对Zn^(2+)的吸附行为  

Adsorption Behavior of Zn^(2+) on Nanohydroxyapatite

作　　者：尹贻芬[1] 吴柳明[1] 赵辉[1] 朱婷婷[1] 赵延杰[1] 

机构地区：[1]济南大学化学化工学院,山东济南250022

出　　处：《济南大学学报（自然科学版）》2010年第2期131-134,共4页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金(20877035)

摘　　要：用人工合成的纳米羟基磷灰石吸附溶液中的金属离子Zn2+,考察吸附时间、pH值及Zn2+初始离子浓度等因素对吸附效果的影响,探讨吸附机理。结果表明:纳米羟基磷灰石对Zn2+的吸附符合拟二级反应动力学方程,吸附时间60 m in即可达到平衡;吸附量与pH值和Zn2+的初始浓度呈正相关关系;纳米羟基磷灰石对Zn2+的吸附属Langmu ir等温吸附类型。Synthetic nanohydroxyapatite was used to remove Zn2＋ from solution.The influence of various parameters on the adsorption,including adsorption time,pH value of suspensions and initial concentration of Zn2＋,was investigated and the adsorption mechanism was discussed.The results show that the adsorption of Zn2＋ on the surface of nanohydroxyapatite is in agreement with pseudo-second-order kinetic equation,and the equilibrium can be achieved in 60 min;the adsorbed amount of Zn2＋ increases as the pH value and the initial concentration of Zn2＋ increase.The Langmuir adsorption isotherms can be applied to the experimental results.

关 键 词：纳米羟基磷灰石 Zn2+ 吸附 

分 类 号：O643[理学—物理化学]