Comparative Evaluation of Dimethylsulfoxide and Dimethylsulfone Adsorption on a Smooth Platinum Electrode in Acidic Environment

被引：5

作者：

Akhmedov, M. A. ^{[1
,2
]}

Ibragimova, K. O. ^{[2
]}

Khidirov, Sh. Sh. ^{[2
]}

机构：

[1] Russian Acad Sci, Analyt Ctr Collect Use, Dagestan Fed Res Ctr, Makhachkala, Russia

[2] Dagestan State Univ, Makhachkala, Russia

来源：

RUSSIAN JOURNAL OF ELECTROCHEMISTRY | 2020年 / 56卷 / 05期

关键词：

adsorption; smooth platinum; voltammetry; dimethylsulfoxide; dimethylsulfone; surface coverage; electrode processes; molecular spectroscopy; ELECTROCHEMICAL OXIDATION; AQUEOUS-SOLUTIONS; METHANESULFONIC-ACID; VIBRATIONAL-SPECTRA; ZERO CHARGE; SURFACE; SULFOXIDE; BEHAVIOR; SULFONE; POTENTIALS;

D O I：

10.1134/S1023193520040023

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

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.

引用

页码：396 / 404

页数：9

共 6 条

[1] Comparative Evaluation of Dimethylsulfoxide and Dimethylsulfone Adsorption on a Smooth Platinum Electrode in Acidic Environment
M. A. Akhmedov
K. O. Ibragimova
Sh. Sh. Khidirov
Russian Journal of Electrochemistry, 2020, 56 : 396 - 404
[2] Adsorption of polyethylene glycol on platinum electrode from acidic solutions
Safonova, T. Ya.
Smirnova, N. V.
Petrii, O. A.
RUSSIAN JOURNAL OF ELECTROCHEMISTRY, 2006, 42 (09) : 995 - 1000
[3] Comparative study of methanol adsorption and electro-oxidation on carbon-supported platinum in acidic and alkaline electrolytes
Jing, Mingyi
Jiang, Luhua
Yi, Baolian
Sun, Gongquan
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2013, 688 : 172 - 179
[4] Specific Features of the Adsorption of Carbon Monoxide on a Smooth Polycrystalline Platinum Electrode Modified with Adsorbed Silver Atoms
Yu. M. Maksimov
A. V. Smolin
B. I. Podlovchenko
Russian Journal of Electrochemistry, 2005, 41 : 1330 - 1335
[5] Specific features of the adsorption of carbon monoxide on a smooth polycrystalline platinum electrode modified with adsorbed silver atoms
Maksimov, YM
Smolin, AV
Podlovchenko, BI
RUSSIAN JOURNAL OF ELECTROCHEMISTRY, 2005, 41 (12) : 1330 - 1335
[6] A comparative study on metal organic frameworks for indoor environment application: Adsorption evaluation
Bahri, Mitra
Haghighat, Fariborz
Kazemian, Hossein
Rohani, Sohrab
CHEMICAL ENGINEERING JOURNAL, 2017, 313 : 711 - 723

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