Specific counter-cation effect on the molecular orientation of thiocyanate anions at the aqueous solution interface

2020 ◽  
Vol 22 (18) ◽  
pp. 10106-10115
Author(s):  
Hongxing Hao ◽  
Qing Xie ◽  
Jingwen Ai ◽  
Yuan Wang ◽  
Hongtao Bian
Keyword(s):  
Aqueous Solution ◽  
Atmospheric Aerosols ◽  
Molecular Orientation ◽  
Aqueous Electrolyte ◽  
Electrolyte Solutions ◽  
Interfacial Structure ◽  
Cation Effect ◽  
Solution Interface ◽  
Wide Range ◽  
Counter Cation

Understanding the interfacial structure of aqueous electrolyte solutions is important and relevant to a wide range of systems, ranging from atmospheric aerosols to electrochemistry, and biological environments.

scholarly journals Effect of Anions (Cl−, SO2−4) on the Interfacial Properties of Akaganeite (β-FeOOH) in Aqueous Electrolyte Solutions

1988 ◽  
Vol 5 (4) ◽  
pp. 257-279 ◽  
Author(s):  
K.M. Parida
Keyword(s):  
Aqueous Electrolyte ◽  
Surface Acidity ◽  
Aqueous Media ◽  
Electrolyte Solutions ◽  
Chloride Ions ◽  
Point Of Zero Charge ◽  
Surface Complexes ◽  
Solution Interface ◽  
Adsorption Data ◽  
Titration Data

The point of zero charge (pHpzc) of the sample (β-FeOOH) is shifted from 7.50 to 8.20 and 8.55, respectively, in KCl and K2SO4 electrolyte media. Intrinsic surface acidity and complexation constants have been calculated by single and double extrapolation methods using Potentiometrie titration data obtained for different concentrations of KCl and K2SO4 in aqueous media. Complexation con stants for K+, Cl− and SO2−4 have also been calculated from adsorption data by the same two methods. Close agreement exists between the two sets of values. Chloride ions form SOH2−4 – Cl− surface complexes on a β-FeOOH surface, whereas sulphate ions form two types of surface complex i.e. SOH+2 – SO2−4 and SOH+2 – SO4H−. Various parameters such as σ0, ψ0, ψd, dσ0/dψ0, etc. associated with the electrical double layer at the oxide/aqueous KCl and K2SO4 electrolyte solution interface have been calculated from Potentiometrie and adsorption data, and are discussed.

The Temperature Dependence of the Electrical Conductivity Activation Energy of the of Aqueous Electrolyte Solutions

2021 ◽  
Vol 1031 ◽  
pp. 228-233
Author(s):  
Yuliya M. Artemkina ◽  
Vladimir V. Shcherbakov ◽  
Irina A. Akimova
Keyword(s):  
Activation Energy ◽  
Aqueous Solution ◽  
Temperature Dependence ◽  
Aqueous Electrolyte ◽  
Electrolyte Solutions ◽  
Temperature Step ◽  
Conductivity Activation Energy ◽  
Intermolecular Hydrogen Bonds ◽  
Optimal Value ◽  
Increasing Temperature

The procedure for determining the activation energy of conductivity Еκ is analyzed depending on the temperature step ΔT. It is shown that with increasing ΔT, the error in the calculation of Eκ decreases, but the calculated value of Eκ decreases. In order not to lose the temperature dependence of the activation energy, it is necessary to choose the optimal value of Δt. In our opinion, this value should not exceed 5 – 10 °C. Taking into account the decrease in concentration with increasing temperature due to a decrease in density has virtually no effect on the accuracy of determining Eκ, provided that ΔT is 5 – 10 °C. It has been shown that in the temperature range 20 – 80 °C, the activation energy of conductivity decreases with increasing temperature. This decrease is due to the rupture of intermolecular hydrogen bonds of the solvent with increasing temperature. It was suggested that the movement of ions in an aqueous solution may be accompanied by the breaking of hydrogen bond of the solvent.

scholarly journals Negligible cation effect on the vibrational relaxation dynamics of water molecules in NaClO4 and LiClO4 aqueous electrolyte solutions

RSC Advances ◽  
2017 ◽  
Vol 7 (82) ◽  
pp. 52111-52117 ◽  
Author(s):  
Qianshun Wei ◽  
Dexia Zhou ◽  
Hongtao Bian
Keyword(s):  
Aqueous Solutions ◽  
Vibrational Relaxation ◽  
Aqueous Electrolyte ◽  
Electrolyte Solutions ◽  
Water Molecules ◽  
Relaxation Dynamics ◽  
Cation Effects ◽  
Aqueous Electrolyte Solutions ◽  
Cation Effect

Negligible cation effects on the vibrational relaxation dynamics of water molecules in NaClO4 and LiClO4 aqueous solutions.

Effect of interionic interactions on the structure and dynamics of ionic solvation shells in aqueous electrolyte solutions

RSC Advances ◽  
2016 ◽  
Vol 6 (115) ◽  
pp. 114666-114675 ◽  
Author(s):  
Parveen Kumar ◽  
Mridula Dixit Bharadwaj ◽  
S. Yashonath
Keyword(s):  
Aqueous Solution ◽  
Aqueous Electrolyte ◽  
Md Simulations ◽  
Electrolyte Solutions ◽  
Solvation Shell ◽  
Halide Ions ◽  
Alkali Ions ◽  
Ionic Solvation ◽  
Structure And Dynamics ◽  
Interionic Interactions

Molecular dynamics (MD) simulations to explore the structure and dynamics of the ionic solvation shell of alkali ions and halide ions in aqueous solution.

Promoting Nitrogen Electroreduction to Ammonia with Bismuth Nanocrystals and Potassium Cations in Water

2020 ◽  
Author(s):  
Jaecheol Choi ◽  
Hoang-Long Du ◽  
Manjunath Chatti ◽  
Bryan H. R. Suryanto ◽  
Alexandr Simonov ◽  
...  
Keyword(s):  
Electrocatalytic Activity ◽  
Aqueous Electrolyte ◽  
Electrolyte Solutions ◽  
Reduction Reaction ◽  
Nitrogen Reduction ◽  
Aqueous Electrolyte Solutions

We demonstrate that bismuth exhibits no measurable electrocatalytic activity for the nitrogen reduction reaction to ammonia in aqueous electrolyte solutions, contrary to several recent reports on the highly impressive rates of Bi-catalysed electrosynthesis of NH<sub>3</sub> from N<sub>2</sub>.

Temperature Effect on the Two-Dimensional Phase Transition Kinetics of Adenine Adsorbed at the Hg Electrode/Aqueous Solution Interface

2003 ◽  
Vol 68 (8) ◽  
pp. 1407-1419 ◽  
Author(s):  
Claudio Fontanesi ◽  
Roberto Andreoli ◽  
Luca Benedetti ◽  
Roberto Giovanardi ◽  
Paolo Ferrarini
Keyword(s):  
Phase Transition ◽  
Aqueous Solution ◽  
Phase Change ◽  
Temperature Effect ◽  
Transition Rate ◽  
Effect Of Temperature ◽  
Two Dimensional ◽  
Solution Interface ◽  
Phase Transition Kinetics ◽  
Kinetics Of

The kinetics of the liquid-like → solid-like 2D phase transition of adenine adsorbed at the Hg/aqueous solution interface is studied. Attention is focused on the effect of temperature on the rate of phase change; an increase in temperature is found to cause a decrease of transition rate.

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