کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
186561 459617 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Properties of an interfacial solution layer at gold electrode surface in perchlorate and chloride solutions: piezoelectric resonator and drag force study
ترجمه فارسی عنوان
خواص یک لایه محلول اینترفیس در سطح الکترودهای طلای در محلول های پرکلرات و کلرید: رزوناتور پیزوالکتریک و مطالعه نیروی کششی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی

Piezoelectric resonator and drag force measurements show a decrease of interfacial viscosity of perchlorate and chloride aqueous solutions during polarization of gold electrode towards potential of zero charge. Though more noisy, drag force measurements have the advantage over piezoelectric technique as the former is insensitive to potential dependent adsorption, which causes distortion of data on liquid properties obtained from piezoelectric resonator measurements at more positive potentials. The shift in the potential of the viscosity minimum, obtained from drag force measurements follows the shift in the potential of zero charge (pzc) with a change in concentration. In addition, the Esin-Markov relation holds at these potentials: tenfold increase in concentration of specifically adsorbing chloride shifts the potential of viscosity minimum by -46 mV, whereas tenfold increase in concentration of weakly adsorbing perchlorate results only in the negligible shift of the potential of viscosity minimum (-4 mV).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 121, 1 March 2014, Pages 278–284
نویسندگان
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