Abstract

a comparative assessment of dimethylsulfoxide and dimethylsulfone adsorption on a smooth platinum electrode in acidic medium in the region of anode potentials is presented. The adsorption isotherms in the “hydrogen” potential range, depending on the dimethylsulfoxide and dimethylsulfone concentration, are S-shaped. At the adsorbate concentrations in the solution exceeding 0.1 M, the surface coverage with dimethylsulfoxide and dimethylsulfone is nearly the same and changes but slightly. A significant difference in the adsorption characteristics of dimethylsulfoxide and dimethylsulfone in the potential region of oxygen adsorption is found. According to the Pt-electrode surface coverage with oxygen in the presence of the test substances, it was concluded that the value of the dimethylsulfoxide and dimethylsulfone adsorption is maximal only when their bulk concentration is higher than 0.1 M, here the oxygen surface coverage in the presence of dimethylsulfone exceeds that in the background solution.

中文翻译：

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酸性环境中光滑铂电极上二甲基亚砜和二甲基砜吸附的比较评价

摘要

提出了在阳极电位区域内酸性介质中平滑铂电极上二甲基亚砜和二甲基砜吸附的比较评估。取决于二甲基亚砜和二甲基砜的浓度，在“氢”势范围内的吸附等温线为S形。当溶液中的吸附物浓度超过0.1 M时，二甲基亚砜和二甲基砜的表面覆盖率几乎相同，但变化很小。发现在氧气吸附的潜在区域中，二甲基亚砜和二甲基砜的吸附特性存在显着差异。根据测试物质存在下Pt电极的氧气表面覆盖率，