Adsorption of monoterpene alcohols at the water–air interface

Lewandowski, Andrzej

doi:10.1007/s10450-019-00010-y

Cited by 12 publications

(15 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The values for K and  in the case of linalool and citronellol practically coincide with those reported in Ref. [18] for 20 o C. Our values of the interaction parameter, , are slightly different.…”

Section: Surface Tension Isotherms Of Volatile Amphiphile Aqueous Sol...supporting

confidence: 90%

“…In Ref. [18] the surface tension isotherms for linalool and citronellol aqueous solutions had been measured at 20 o C and processed using a long list of theoretical models. From our viewpoint, the most adequate results are obtained applying the van der Waals model, which is self-consistent with the kinetic curves reported in Sections 4 and 5.…”

Section: Surface Tension Isotherms Of Volatile Amphiphile Aqueous Sol...mentioning

confidence: 99%

“…The surface tension isotherms of aqueous solutions of 10 monoterpene alcohols at 20 o C are measured in Ref. [18]. The authors processed experimental data using various adsorption models of localized and non-localized adsorption and obtained the respective physicochemical parameters.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Kinetics of transfer of volatile amphiphiles (fragrances) from vapors to aqueous drops and vice versa: Interplay of diffusion and barrier mechanisms

Danov

Gurkov

Stanimirova

et al. 2021

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

Section: Surface Tension Isotherms Of Volatile Amphiphile Aqueous Sol...supporting

confidence: 90%

Section: Surface Tension Isotherms Of Volatile Amphiphile Aqueous Sol...mentioning

confidence: 99%

See 1 more Smart Citation

Kinetics of transfer of volatile amphiphiles (fragrances) from vapors to aqueous drops and vice versa: Interplay of diffusion and barrier mechanisms

Danov

Gurkov

Stanimirova

et al. 2021

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

“…This is in the range of values reported for the adsorption of different alcohols. 50,51 From a microkinetic point of view, a higher interaction energy of a reactant species increases the reaction rate initially due to high reactant coverage but lowers the rate by the ongoing production of the product species. This behavior leads to the broadened current response of the electrochemical reactions shown exemplarily for a proton- coupled electron-transfer step in Figure S7.…”

Section: Energies and Further Model Parametersmentioning

confidence: 99%

Microkinetic Analysis of the Oxygen Evolution Performance at Different Stages of Iridium Oxide Degradation

et al. 2022

View full text Add to dashboard Cite

The microkinetics of the electrocatalytic oxygen evolution reaction substantially determines the performance in proton-exchange membrane water electrolysis. State-of-the-art nanoparticulated rutile IrO 2 electrocatalysts present an excellent trade-off between activity and stability due to the efficient formation of intermediate surface species. To reveal and analyze the interaction of individual surface processes, a detailed dynamic microkinetic model approach is established and validated using cyclic voltammetry. We show that the interaction of three different processes, which are the adsorption of water, one potential-driven deprotonation step, and the detachment of oxygen, limits the overall reaction turnover. During the reaction, the active IrO 2 surface is covered mainly by *O, *OOH, and *OO adsorbed species with a share dependent on the applied potential and of 44, 28, and 20% at an overpotential of 350 mV, respectively. In contrast to state-of-the-art calculations of ideal catalyst surfaces, this novel model-based methodology allows for experimental identification of the microkinetics as well as thermodynamic energy values of real pristine and degraded nanoparticles. We show that the loss in electrocatalytic activity during degradation is correlated to an increase in the activation energy of deprotonation processes, whereas reaction energies were marginally affected. As the effect of electrolyte-related parameters does not cause such a decrease, the model-based analysis demonstrates that material changes trigger the performance loss. These insights into the degradation of IrO 2 and its effect on the surface processes provide the basis for a deeper understanding of degrading active sites for the optimization of the oxygen evolution performance.

show abstract

“…Surface tension has been assessed under equilibrium conditions as well as under nonequilibrium fastadsorbing regimes with different measuring methods, including a comparison with the earlier data. 20,21 Volatile amphiphiles demonstrate a fast-adsorbing behavior so that with dynamic tensiometry, the maximal bubble pressure method, it is possible to assess both dynamic interfacial activity and quasisteady-state adsorption behavior in a single measurement on a time scale from milliseconds to seconds.…”

Section: ■ Conclusionmentioning

confidence: 99%

Volatile Aroma Surfactants: The Evaluation of the Adsorption–Evaporation Behavior under Dynamic and Equilibrium Conditions

et al. 2022

View full text Add to dashboard Cite

Multicomponent heterogeneous systems containing volatile amphiphiles are relevant to the fields ranging from drug delivery to atmospheric science. Research presented here discloses the individual interfacial activity and adsorption–evaporation behavior of amphiphilic aroma molecules at the liquid–vapor interface. The surface tension of solutions of nonmicellar volatile surfactants linalool and benzyl acetate, fragrances as such, was compared with that of the conventional surfactant sodium dodecyl sulfate (SDS) under equilibrium as well as under no instantaneous equilibrium, including a fast-adsorbing regime. In open systems, the increase in the surface tension on a time scale of ∼10 min is evaluated using a phenomenological model. The derived characteristic mass transfer constant is shown to be specific to both the desorption mechanism and the chemistry of the volatile amphiphile. Fast-adsorbing behavior disclosed here, as well as the synergetic effect in the mixtures with conventional micellar surfactants, justifies the advantages of volatile amphiphiles as cosurfactants in dynamic interfacial processes. The demonstrated approach to derive specific material parameters of fragrance molecules can be used for an application-targeted selection of volatile cosurfactants, e.g., in emulsification and foaming, inkjet printing, microfluidics, spraying, and coating technologies.

show abstract

Adsorption of monoterpene alcohols at the water–air interface

Cited by 12 publications

References 25 publications

Kinetics of transfer of volatile amphiphiles (fragrances) from vapors to aqueous drops and vice versa: Interplay of diffusion and barrier mechanisms

Kinetics of transfer of volatile amphiphiles (fragrances) from vapors to aqueous drops and vice versa: Interplay of diffusion and barrier mechanisms

Microkinetic Analysis of the Oxygen Evolution Performance at Different Stages of Iridium Oxide Degradation

Volatile Aroma Surfactants: The Evaluation of the Adsorption–Evaporation Behavior under Dynamic and Equilibrium Conditions

Contact Info

Product

Resources

About