Surface Potential of 1-Hexanol Solution: Comparison with Methyl Isobutyl Carbinol

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• 作者：Cuong V. Nguyen ; Chi M. Phan ; Ha M. Ang ; Hiromichi Nakahara ; Osamu Shibata ; Yoshikiyo Moroi
• 刊名：The Journal of Physical Chemistry B
• 出版年：2013
• 出版时间：June 27, 2013
• 年：2013
• 卷：117
• 期：25
• 页码：7615-7620
• 全文大小：340K
• 年卷期：v.117,no.25(June 27, 2013)
• ISSN：1520-5207

文摘

Alcohols have an amphiphilic characteristic and are employed in industrial processes to enhance interfacial properties. In this study, the change in surface potential (螖V) and surface tension of 1-hexanol were measured on the subsurface of electrolyte solutions (NaCl at 0.02, 0.2, and 2 M). The results were fitted by a newly proposed model, which includes the influence of electrolytes and surface concentration of surfactant at the air鈥搘ater interface. The findings were compared to those of a previous study on methyl isobutyl carbinol (MIBC). Most significantly, the modeling results showed opposite behaviors between the two systems: adsorbed MIBC enhances the presence of cations, whereas adsorbed 1-hexanol enhances the presence of anions. The difference highlights the significance of the molecular structure on the arrangement at the air/water interface.