Ionic Current Rectification in Organic Solutions with Quartz Nanopipettes,Analytical Chemistry

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Ionic Current Rectification in Organic Solutions with Quartz Nanopipettes
Analytical Chemistry ( IF 6.7 ) Pub Date : 2015-08-11 00:00:00 , DOI: 10.1021/acs.analchem.5b02337
Xiaohong Yin ₁ , Shudong Zhang ₁ , Yitong Dong ₁ , Shujuan Liu ₁ , Jing Gu ₁ , Ye Chen ₁ , Xin Zhang ₁ , Xianhao Zhang ₁ , Yuanhua Shao ₁

Affiliation

The study of behaviors of ionic current rectification (ICR) in organic solutions with quartz nanopipettes is reported. ICR can be observed even in organic solutions using quartz pipettes with diameters varied from several to dozens of nanometers, and the direction of ICR is quite different from the ICR observed in aqueous phase. The influences of pore size, electrolyte concentration, and surface charge on the ICR have been investigated carefully. Water in organic solutions affects the direction and extent of ICR significantly. Mechanisms about the formation of an electrical double layer (EDL) on silica in organic solutions with different amount of water have been proposed. An improved method, which can be employed to detect trace water in organic solutions, has been implemented based on Au ultramicroelectrodes with cathodic differential pulse stripping voltammetry.

中文翻译：

石英纳米移液器对有机溶液中的离子电流进行整流

报道了用石英纳米移液管在有机溶液中离子电流整流（ICR）行为的研究。甚至在使用直径从几纳米到几十纳米不等的石英移液器的有机溶液中，也可以观察到ICR，并且ICR的方向与在水相中观察到的ICR完全不同。仔细研究了孔径，电解质浓度和表面电荷对ICR的影响。有机溶液中的水会显着影响ICR的方向和程度。已经提出了在具有不同水量的有机溶液中在二氧化硅上形成双电层（EDL）的机理。一种改进的方法，可用于检测有机溶液中的痕量水，

更新日期：2015-08-11

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