十二烷基苯磺酸钠在纳米Fe_3O_4表面的吸附行为  

Adsorption Behavior of Sodium Dodecylbenzene Sulfonate on the Surfaces of Fe_3O_4 Nanoparticles

作　　者：张隆基[1] 张卫民[1] 孙中溪[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1期40-43,共4页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金(20677022);国家自然科学重点基金(20537020)

摘　　要：采用紫外-可见分光光谱法测定十二烷基苯磺酸钠(SDBS)的残余质量浓度,考察溶液pH值、平衡时间、SDBS质量浓度对纳米Fe3O4吸附SDBS的影响,研究其对水溶液中SDBS的吸附行为。结果表明,纳米Fe3O4对SDBS的吸附量在溶液pH值低于7.5时,随pH值降低而增加;吸附属典型的Langmu ir吸附类型,是静电相互作用产生的物理吸附。The remaining concentrations of sodium dodecylbenzenesulfonate （SDBS） in aqueous solution were measured using UV- Vis spectroscopy technique and the influences of solution pH, equilibrium time and the concentration of SDBS on the adsorption on the surfaces of Fe3O4 in aqueous solution were investigated. Testing results showed that the adsorption of SDBS increases with decreasing pH when the solution pH is below 7.5. The adsorption is attributed to the electrostatic interaction and the adsorption isotherm belongs to the Langmuir type.

关 键 词：纳米FE3O4 十二烷基苯磺酸钠 吸附 

分 类 号：O643[理学—物理化学]