Physicochemical assessment of crystal violet adsorption on nanosilica through the infinity multilayer model and sites energy distribution

Wjihi, Sarra; Peres, Enrique Chaves; Dotto, Guilherme L.; Lamine, Abdelmottaleb Ben

doi:10.1016/j.molliq.2018.12.064

Cited by 28 publications

(4 citation statements)

References 24 publications

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“…The ordinary curve of site energy distribution has a Gaussian form with a thinner peak characterized by ε* m and F(ε* m ), but it can display two different peaks reflecting the presence of several types of adsorption sites (Mobarak et al 2019b). According to Wjihi et al (Wjihi et al 2019), the F(ε* m ) decreased and shifted to higher adsorption energy values with increasing temperature. This comportment indicates that the low-energy sites were less accessible for the adsorption of CV dye on nanosilica.…”

Section: Site Energy Distributionmentioning

confidence: 92%

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Calculation of adsorption isotherms by statistical physics models: a review

2021

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Adsorption is a major basic and applied phenomenon in many scientific disciplines. In particular, the design of adsorbents to remove pollutants from wastewater requires advanced knowledge of adsorption isotherms, which are useful tools to identify physicochemical factors that control adsorption performance. Recent modeling of adsorption isotherms has focused on the use of statistical physics. Here, we review the major adsorption isotherm models based on statistical physics. We discuss steric, energetic, and thermodynamic parameters.

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Section: Site Energy Distributionmentioning

confidence: 92%

“…Then, a second layer L 2 is formed with the adsorption energy (− ε 2 ). The remaining species adsorb to form infinite layers L 3 with the energy (− ε 3 ) such that | 1 | >| 2 | >| 3 | (Wjihi et al 2019). The corresponding partition function of grand canonical is (Wjihi et al 2019):…”

Section: Infinity Multi-layer Model With Three Energiesmentioning

confidence: 99%

Calculation of adsorption isotherms by statistical physics models: a review

2021

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“…The sorption energies |(-E 1 )| of cobalt nitrate are lower than 40 kJ mol À1 , so the binding between cobalt nitrate and the H 2 TTPP sites takes place via physical adsorption. 30,31 All the complexing energies of cobalt chloride are greater than 40 kJ mol; accordingly, we concluded that the complexation of H 2 TTPP by cobalt chloride is a chemical sorption process and this solid binding occurs through covalent or ionic bonds. 32 In the next part, thermodynamic properties 33 are determined according to the statistical physics treatment in order to get macroscopic information about the double layer adsorption of cobalt nitrate and the single-layer adsorption of cobalt chloride.…”

Section: Microscopic Interpretation Of the Complexation Process Throu...mentioning

confidence: 77%

New insights in the physicochemical investigation of the vitamin B₁₂ nucleus using statistical physics treatment: interpretation of experiments and surface properties

Yahia

2020

RSC Adv.

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“…The next step of the statistical physics development comprises the calculation of the average numbers of occupation (N 01 and N 02 ) of independent [6]Helicene s sites. They are expressed as follows 36,37…”

Section: Development Of Advanced Modelsmentioning

confidence: 99%

Physico-chemical study of complexation of silver ion (Ag+) by macrocyclic molecules (hexa-Helicenes) based on statistical physics theory: new description of a cancer drug

Yahia

2020

Sci Rep

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In recent papers, it is found that the silver-[6]Helicene complex can be used as a cancer drug but the interaction silver-hexaHelicene has not yet proven. the idea of this paper is to investigate the complexation process of the [6]Helicene by the silver metal (Ag +) using three types of adsorbates. Indeed, the adsorption of silver chloride, silver nitrate and silver sulfide into the sensor films deposited on the QCM electrode are measured at three temperatures (293-333 K). Films of the [6]Helicene were deposited on the QcM resonators using spin coating method in order to obtain uniform and homogenous sensor surface. Experimental results indicated that the [6]Helicene can form a stable complex with the silver ion and that the Agcl is the appropriate adsorbate for the complexation achievement. Actually, an advanced modeling analysis by means of statistical physics adsorption models is applied to explore the new vision of the complextion system. the values of the models parameters are deduced from fitting the experimental data with the developed models. They result in confirming the experimental findings by comparing the complexation energies of the three examined systems. in particular, for the silver nitrate, the Van-der-Waals parameters explained the isotherms drop at high concentration through the lateral interactions between the adsorbates. the adsorption energies analysis showed the highest interaction AgCl-[6]Helicene. Density functional theory (DFT) simulations showed that chemical bonds take place during the adsorption of silver chloride on hexaHelicene which confirms that the [6]Helicene can function as a chiral molecular tweezer of the univalent cationic silver.

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Physicochemical assessment of crystal violet adsorption on nanosilica through the infinity multilayer model and sites energy distribution

Cited by 28 publications

References 24 publications

Calculation of adsorption isotherms by statistical physics models: a review

Calculation of adsorption isotherms by statistical physics models: a review

New insights in the physicochemical investigation of the vitamin B₁₂ nucleus using statistical physics treatment: interpretation of experiments and surface properties

Physico-chemical study of complexation of silver ion (Ag+) by macrocyclic molecules (hexa-Helicenes) based on statistical physics theory: new description of a cancer drug

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Physicochemical assessment of crystal violet adsorption on nanosilica through the infinity multilayer model and sites energy distribution

Cited by 28 publications

References 24 publications

Calculation of adsorption isotherms by statistical physics models: a review

Calculation of adsorption isotherms by statistical physics models: a review

New insights in the physicochemical investigation of the vitamin B12 nucleus using statistical physics treatment: interpretation of experiments and surface properties

Physico-chemical study of complexation of silver ion (Ag+) by macrocyclic molecules (hexa-Helicenes) based on statistical physics theory: new description of a cancer drug

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New insights in the physicochemical investigation of the vitamin B₁₂ nucleus using statistical physics treatment: interpretation of experiments and surface properties