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题名: Interactions of Divalent and Trivalent Metal Counterions with Anionic Sulfonate Gemini Surfactant and Induced Aggregate Transitions in Aqueous Solution
作者: Liu, Zhang1; Cao, Meiwen2; Chen, Yao1; Fan, Yaxun1; Wang, Dong2; Xu, Hai2; Wang, Yilin1
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
发表日期: 2016-05-05
卷: 120, 期:17, 页:4102-4113
收录类别: SCI
英文摘要: Interactions of multivalent metal counterions with anionic sulfonate gemini surfactant 1,3-bis(N-dodecyl-N-propanesulfonate sodium)-propane (C12C3C12(SO3)(2)) and the induced aggregate transitions in aqueous solution have been studied. Divalent metal ions Ca2+, Mg2+, Cu2+, Zn2+, Mn2+, Co2+, and Ni2+ and trivalent metal ions.Al3+, Fe3+, and Cr3+ were chosen. The results indicate that the critical micelle concentration (CMC) of C12C3C12(SO3)(2) is greatly reduced by the ions, and the aggregate morphologies of C12C3C12(SO3)(2) are adjusted by changing the nature and molar ratio of the metal ions. These metal ions can be classified into four groups because the ions in each group have very similar interaction mechanisms with C12C3C12(SO3)(2): (I) Cu2+ and Zn2+; (II) Ca2+, Mn2+ and Mg2+; (III) Ni2+ and Co2+; and (IV) Cr3+,Al3+ and Fe3+. Cu2+, Mg2+, Ni2+, and Al3+ then were selected as representatives for each group to further study their interaction with C12C3C12(SO3)(2). C12C3C12(SO3)(2) interacts with the multivalent metal ions by electrostatic interaction and coordination interaction. C12C3C12(SO3)(2) forms prolate micelles and plate-like micelles with Cu2+, vesicles and wormlike micelles with Al3+ or Ni2+, and viscous three-dimensional network structure with Mg2+. Moreover, precipitation does not take place in aqueous solution even at a high ion/surfactant ratio. The related mechanisms have been discussed. The present work provides guidance on how to apply the anionic surfactant into the solutions containing the multivalent metal ions, and those aggregates may have potential usage in separating heavy metal ions from aqueous solutions.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/36074
Appears in Collections:胶体、界面与化学热力学实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, BNLMS, Key Lab Colloid & Interface Sci, Beijing 100190, Peoples R China
2.China Univ Petr East China, Ctr Bioengn & Biotechnol, 66 Changjiang West Rd, Qingdao 266580, Peoples R China
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