Kinetic theory of heterogeneous nucleation; effect of nonuniform density in the nuclei

Berim, Gersh O.; Ruckenstein, Eli

doi:10.1016/j.jcis.2010.11.080

Cited by 13 publications

(11 citation statements)

References 28 publications

(58 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The nucleation preferably takes place in the cavity of mHSS as compared to the outer planar/convex surfaces, due to its lower critical energy of nucleation. 47,49 As the critical energy of the nucleation is decreased in the cavity as compared to the outer planar/convex surface, the nucleation rate is enhanced and preferably takes place inside the cavity of mHSS. 47 The formation of a metallic nanoparticle in the pores can be hindered due to the absence of deprotonation of hydroxyl species (SiOH) present in the pores at certain pH units.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…As the growth of a metallic core takes place inside the cavity, the metallic monomers gradually depleted inside the cavity and developed a concentration gradient which helps to diffuse the outer metallic monomers to inside the cavity and the growth of a metallic core nanoparticle takes place continuously inside the cavity of mHSS. The nucleation preferably takes place in the cavity of mHSS as compared to the outer planar/convex surfaces, due to its lower critical energy of nucleation. , As the critical energy of the nucleation is decreased in the cavity as compared to the outer planar/convex surface, the nucleation rate is enhanced and preferably takes place inside the cavity of mHSS . The formation of a metallic nanoparticle in the pores can be hindered due to the absence of deprotonation of hydroxyl species (SiOH) present in the pores at certain pH units.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

A Generalized Method for the Synthesis of Ligand-Free M@SiO₂ (M = Ag, Au, Pd, Pt) Yolk–Shell Nanoparticles

2017

View full text Add to dashboard Cite

A universal method is reported for the synthesis of ligand free noble metal M@SiO (M = Ag, Au, Pd, Pt) yolk-shell nanoparticles (YSNs). Mesoporous hollow silica shells (mHSS) are used as smart nanoreactors for the synthesis of noble metal yolk-shell nanoparticles. The nanocavity of a mHSS and anionic metal ions play a critical role in the formation of yolk-shell nanoparticles. The synthesis mechanism can be tuned by simply varying the pH of the noble metal precursor aqueous solution. A critical pH ≥ 4 is required for the formation of YSNs. The anionic metal ions can pass freely through the mesopores of mHSS and eventually lead to the formation of YSNs, whereas the cationic metal ions can show strong interaction with the surface of mHSS which hinders the formation of YSNs. The syntheses of YSNs are achieved without using any external capping ligands and reducing agents in the reaction.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

A Generalized Method for the Synthesis of Ligand-Free M@SiO₂ (M = Ag, Au, Pd, Pt) Yolk–Shell Nanoparticles

2017

View full text Add to dashboard Cite

show abstract

“…However, in this analysis we do not analyze the possibility that the bulk structure of the embryo can differ from the bulk structure of the reference bulk system in a capillary tube (for the principal possibility of such an effect see [45]). We consider the bulk of the embryos as the homogeneous media; for nonuniform density one can see [46]. The theory can be transformed to grasp this case also.…”

Section: Results and Conclusionmentioning

confidence: 99%

Gibbs Thermodynamics of the Renninger-Wilemski Problem

Kurasov

2015

Journal of Thermodynamics

View full text Add to dashboard Cite

The Renninger-Wilemski problem in nucleation is analyzed. The Gibbs dividing surfaces method with external parameters is used to enrich the initial model. It is shown that both the traditional (Doyle) model and the Renninger-Wilemski model are not complete ones and, namely, the Gibbs dividing surface approach can solve this problem. It is shown that the application of the Gibbs approach also requires some model constructions. The simplified Gibbs model is proposed. It is shown that the simplified Gibbs model gives for the height of activation barrier the same numerical results as the Renninger-Wilemski model.

show abstract

“…The role of the density profiles in the light propagation has been studied in [20]. The analogous property in frames of the embryos in nucleation theory was investigated in [21].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Description of the Glass Preparation with the Necessary Optical Properties

Kurasov

2016

Advances in Optical Technologies

View full text Add to dashboard Cite

The method to get the glass media with necessary optical characteristics is proposed. This method is based on inserting a necessary number of heterogeneous centers of given activity into the system. The theoretical description of the nucleation process in such situation is given and the resulting formulas allow choosing the characteristics of heterogeneous centers necessary to get the required optical characteristics of the media.

show abstract

Kinetic theory of heterogeneous nucleation; effect of nonuniform density in the nuclei

Cited by 13 publications

References 28 publications

A Generalized Method for the Synthesis of Ligand-Free M@SiO₂ (M = Ag, Au, Pd, Pt) Yolk–Shell Nanoparticles

A Generalized Method for the Synthesis of Ligand-Free M@SiO₂ (M = Ag, Au, Pd, Pt) Yolk–Shell Nanoparticles

Gibbs Thermodynamics of the Renninger-Wilemski Problem

Theoretical Description of the Glass Preparation with the Necessary Optical Properties

Contact Info

Product

Resources

About

Kinetic theory of heterogeneous nucleation; effect of nonuniform density in the nuclei

Cited by 13 publications

References 28 publications

A Generalized Method for the Synthesis of Ligand-Free M@SiO2 (M = Ag, Au, Pd, Pt) Yolk–Shell Nanoparticles

A Generalized Method for the Synthesis of Ligand-Free M@SiO2 (M = Ag, Au, Pd, Pt) Yolk–Shell Nanoparticles

Gibbs Thermodynamics of the Renninger-Wilemski Problem

Theoretical Description of the Glass Preparation with the Necessary Optical Properties

Contact Info

Product

Resources

About

A Generalized Method for the Synthesis of Ligand-Free M@SiO₂ (M = Ag, Au, Pd, Pt) Yolk–Shell Nanoparticles

A Generalized Method for the Synthesis of Ligand-Free M@SiO₂ (M = Ag, Au, Pd, Pt) Yolk–Shell Nanoparticles