银离子印迹CTS/TEA膜的制备及表征  

Preparation and Characterization of Silver Ion imprinted CTS/TEA Membrane

作　　者：杨淑玮[1] 张良[1] 钟吕玲[1] 陈双莉[1] 马彩莲[1] 

机构地区：[1]西安建筑科技大学理学院化学系,西安710055

出　　处：《贵金属》2013年第1期46-50,54,共6页Precious Metals

摘　　要：介绍了一种银离子壳聚糖(CTS)/三乙醇胺(TEA)印迹膜[Ag(I)-IICTM]的制备方法:CTS溶液中加入交联剂与银盐,形成均一溶液,流延成膜之后浸泡入有机碱TEA凝固浴中,凝固成CTS/TEA/Ag(I),进行处理,洗脱Ag(I)之后形成Ag(I)-IICTM。制备印迹膜的优化条件为:CTS 2.0%、AgNO30.6%、交联剂3.0%、TEA 10.0%。FT-IR显示Ag(I)-IICTM吸附Ag+具有配位作用;SEM结果显示Ag(I)-IICTM与CTS/TEA/Ag(I)膜相比,表面明显粗糙,且出现均匀的纹理,再吸附银离子后有覆层;XRD结果表明制备Ag(I)-IICTM,TEA作为凝固浴比NaOH更适合。A preparation method of silver ion imprinted chitosan（CTS）/triethanolamine（TEA） membrane [Ag（I）-IICTM] was proposed： crosslinker agent and silver salt were added into CTS solution, then the solution was stirred to form homogeneous solution. After deaeration, the casting solution was coated on the glass, then dipped into TEA coagulation bath to achieve CTS/TEA/Ag（I） membrane. After Ag（I）was eluted, Ag（I）-IICTM was obtained. The optimized condition of preparing Ag（I）-IICTM： 2.0% CTS, 0.6% AgNO3, 3.0% crosslinker, 10.0% TEA. FT-IR spectra showed that Ag（I）-IICTM adsorbs Ag＋ by coordination action. SEM analysis showed compared with CTS/TEA/Ag（1） membrane, the surface of Ag（I）-IICTM is clear rough, and homogeneous texture appears on the surface, and after adsorbing Ag＋, a cladding layer is formed. XRD results showed that TEA is more suitable than NaOH as coagulation bath in preparing Ag（I）-IICTM.

关 键 词：冶金物理化学 离子印迹膜 银 壳聚糖 三乙醇胺 

分 类 号：O647.33[理学—物理化学]