Surface Acid-base Property of Nano-Zns Particles and Adsorption Behavior of Pb2+ and Cu2+
Zinc sulfide nanoparticles were prepared by hydrothermal method and characterized by TEM, FT-IR and BET surface area. The titration results show that the surface of ZnS nanoparticles possessed an obvious acid-base property. With increasing the amount of ZnS nanoparticles in the suspension, the pH buffer capacity of solution increased dramatically. There is a proportional relationship between the amount of ZnS nanoparticles added and the solution pH buffer capacity. The adsorption conditions of Pb2+ and Cu2+ by ZnS nanoparticles was also optimized. They were: titration time of 1.0 h, the amount of ZnS nanoparticles added of 0.1846 g and solution pH of 6.7 for Pb2+ adsorption. For Cu2+, the conditions were 1.0 h, 0.1800 g and pH 6.5-7.0, respectively. The optimized pH values of Pb2+ and Cu2+ adsorption by ZnS nanoparticles were tested by the calculation of MEDUSA software.
zinc sulfide nanoparticles adsorption lead copper
Haiqin Yu Liangguo Yan Weimin Zhang Jingang Wang Cuimei Zhu
School of Chemistry and Chemical Engineering University of Jinan Jinan,China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）