| 纳米γ-Al_2O_3对Ag(Ⅰ)及其配合物的吸附性能表征 |
| |
| 引用本文： | 冯青琴,王贵方.纳米γ-Al_2O_3对Ag(Ⅰ)及其配合物的吸附性能表征[J].河南师范大学学报(自然科学版),2009,37(5). |
| |
| 作者姓名： | 冯青琴 王贵方 |
| |
| 作者单位： | 安阳师范学院,化学化工学院,河南,安阳,455002 |
| |
| 基金项目： | 安阳市科技攻关资助项目 |
| |
| 摘 要： | 溶胶-凝胶法合成纳米γ-Al2O3,以透射电镜(TEM)、X射线衍射(XRD)、比表面积测定(BET)等手段对所得的纳米γ-Al2O3进行了表征,表明纳米粒子的直径在10~50 nm.并利用Zetaplus电位仪测定了其等电点为7.65.考察了纳米γ-Al2O3在静态吸附条件下对Ag(Ⅰ)及其配合物的吸附性能.结果表明,在pH值分别为5~6.5,8~9,2.5~9时,对Ag+,Ag(NH3)2+,Ag(S2O3)32-的吸附能力最强,且符合Freundlich吸附方程.吸附于纳米γ-Al2O3上的Ag(Ⅰ)及其配合物离子,可用0.1 mol.L-1HNO3溶液进行解脱,再生后的纳米γ-Al2O3吸附能力基本不变.
|
| 关 键 词： | 纳米γ-Al2O3 吸附 Ag+ Ag(NH3)2+ Ag(S2O3)23- |
Adsorption Behaviors and Characterization of Nanometer γ-Al2O3 Powders to Ag(Ⅰ) and its Complex |
| |
| FENG Qing-qin,WANG Gui-fang.Adsorption Behaviors and Characterization of Nanometer γ-Al2O3 Powders to Ag(Ⅰ) and its Complex[J].Journal of Henan Normal University(Natural Science),2009,37(5). |
| |
| Authors: | FENG Qing-qin WANG Gui-fang |
| |
| Abstract: | The nanometer γ-Al2O3 powders are synthesized by Sol-Gel method,and characterized by TEM,XRD,BET and Zeta potential measurement.It is found that their diameters are between 10 nm to 50 nm.The adsorption characterization of Ag(Ⅰ) and its complex on the powders in static condition is explored.It showed that the powders have strong adsorption capacity for Ag+,Ag(NH3)+2,Ag(S2O3)3-2 at a given pH value at 5～6.5,8～9,2.5～9 and the adsorption process of Ag+,Ag(NH3)+2,Ag(S2O3)3-2 on powders comply with Freundlich adsorption model.The adsorbed metallic ions on the powders can be desorbed in 0.1 mol· L-1 HNO3 solution,and the regenerated powders have the same adsorption capacity. |
| |
| Keywords: | Ag+ Ag(NH3)+2 Ag(S2O3)3-2 |
| 本文献已被 万方数据 等数据库收录！ |
|
