Adsorption of 1,1,3,3-tetramethyl-2-thiourea on the mercury electrode: dependence on the concentration of the base electrolyte

Gugała, D.; Fekner, Zygmunt; Sieńko, Dorota; Nieszporek, Jolanta; Saba, Jadwiga

doi:10.1016/j.electacta.2003.12.026

Cited by 17 publications

(19 citation statements)

References 29 publications

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“…The obtained ΔG o values are comparable with those calculated for tetramethylthiourea 16,26 where chemisorption occurs on the mercury electrode. That is why in the case of physically adsorbed C 11 H 26 N + considerably high ΔG o values are quite surprising.…”

Section: Referencessupporting

confidence: 76%

“…In the case of chemical adsorption of tetramethylthiourea the curves are constantly increasing. 16 The problem of physical adsorption of surfactants on various materials is generally well known. Mercury offers a highly reproducible and smooth surface for adsorption of surfactants and can be used as a model study.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

“…Solid electrodes (noble metals, different forms of carbon) have much narrower cathodic potential windows and thus cannot compete with mercury in this region. 11 The adsorption of phenols, 12 thiourea derivatives, [13][14][15][16][17] and tert-butanol 18 as well as coadsorption of butan-1-ol and I -ions 19 at the mercury electrode from sodium perchlorate solutions were studied.…”

Section: Introductionmentioning

confidence: 99%

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The octyltrimethylamonium bromide adsorption at the electrode/NaClO4 solution interface

Gugała-Fekner

Nieszporek

Sieńko

2016

ACSi

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The behaviour of octyltrimethylammonium bromide electrosorption on the mercury electrode in 1 mol/L NaClO 4 was determined by means of double layer differential capacity measurements. The adsorption constants were derived from surface pressure data as a function of electrode charge density and cationic surfactant bulk concentration. Adsorption of octyltrimethylammonium bromide was analyzed using constants obtained from Frumkin, corrected Flory-Huggins and virial isotherms. It was found that the repulsive interactions for electrode charges close to 0 were the weakest between the adsorbed cations C 11 H 26 N + . In these conditions the surface concentration of the studied surfactant was the greatest.

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Section: Referencessupporting

confidence: 76%

Section: Adsorption Isothermsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The octyltrimethylamonium bromide adsorption at the electrode/NaClO4 solution interface

Gugała-Fekner

Nieszporek

Sieńko

2016

ACSi

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“…Studies on the kinetics of various depolarisers in the presence of electrode substances are comprehensively discussed in the literature [5][6][7][8][9][10][11]. It was demonstrated that the structures of the inter-phase area caused by adsorption of organic compounds on the surface of mercury play a significant role in the mechanism of the cap-pair effect.…”

Section: Introductionmentioning

confidence: 99%

The Catalytic Impact of Ethionine on the Multi-Step Electroreduction of Bi(III) Ions in Chlorates(VII) Solutions

Nosal‐Wiercińska

Grochowski

2017

Electrocatalysis

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It was concluded that the presence and the protonation of the ethionine (Et) have effects on the rate of the multistep process of Bi(III) electroreduction in the 2 mol dmchlorates(VII). The catalytic activity of ethionine increases with increasing amounts of NaClO 4 in the basic electrolyte solution. Increased amounts of HClO 4 in chlorate(VII) solutions causes a decreased rate of the Bi(III) ion electroreduction process in the presence of ethionine. This confirms the assumption on the variety of active complexes mediating the passage of electrons.

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“…Additionally, TMTU's adsorption parameters in aqueous solutions are presented in the literature. [9][10][11] The investigated compounds had an inverse effect on the kinetics of Zn 2+ ions electroreduction. The studies on Zn 2+ ions reduction kinetics as piloting ions allow on monitoring the used organic compounds adsorption equilibrium at potentials distant from maximum adsorption potential.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Tetramethylthiourea in the Presence of Cationic Detergent at Interface Electrode / Aqueous Perchlorate Solutions

2011

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Abstract. The mixed adsorption layers of tetramethylthiourea and a cationic detergent formed at electrode surface in NaClO 4 (1 mol dm -3 ) are described. The systems were characterized by the measurement of differential capacity, zero charge potential, and surface tension at this potential. The data were analyzed to obtain the surface pressure and relative surface excess of tetramethylthoiurea as a function of electrode charge at bulk concentration of studied compounds. It was stated that the adsorbing tetramethylthoiurea molecule pushed out the water molecule instead of the detergent molecule from the electrode surface. The constants of the Frumkin and corrected Flory-Huggins isotherm point to a decreased TMTU adsorption energy in the cationic detergents presence and stronger repulsive interaction. Electrostatic parameters of the inner layer were assigned. In the range of more negative potentials, mixed adsorption layers were described by investigating the kinetics of the Zn 2+ ions electroreduction as a piloting ion. (doi: 10.5562/cca1791)

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Adsorption of 1,1,3,3-tetramethyl-2-thiourea on the mercury electrode: dependence on the concentration of the base electrolyte

Cited by 17 publications

References 29 publications

The octyltrimethylamonium bromide adsorption at the electrode/NaClO4 solution interface

The octyltrimethylamonium bromide adsorption at the electrode/NaClO4 solution interface

The Catalytic Impact of Ethionine on the Multi-Step Electroreduction of Bi(III) Ions in Chlorates(VII) Solutions

Adsorption of Tetramethylthiourea in the Presence of Cationic Detergent at Interface Electrode / Aqueous Perchlorate Solutions

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