2009
DOI: 10.1021/jp904844s
|View full text |Cite
|
Sign up to set email alerts
|

Thermal Stability of Nanocrystals Confined in Nanoporous Media

Abstract: Thermal stability of nanocrystals confined in nanopores is dramatically different from their bulk counterparts. To understand the underlying mechanism and factors that dominate the general trend of tunability, we have established a simple and unified model for size and interface effects on the thermal stability of nanocrystals based on the perspective of Lindemann’s criterion for melting. According to this model, the depression or enhancement of thermal stability of nanoconfined crystals has been illustrated t… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
2

Citation Types

0
4
0

Year Published

2010
2010
2020
2020

Publication Types

Select...
3

Relationship

0
3

Authors

Journals

citations
Cited by 3 publications
(4 citation statements)
references
References 65 publications
(248 reference statements)
0
4
0
Order By: Relevance
“…The size-dependent melting temperature of metallic nanowires T m ( D ) can be described by Jiang’s model T m false( D false) / T m false( normal∞ false) = exp false[ 2 Δ S vib false( normal∞ false) / false( 3 R false) / false( 1 D / 4 h false) false] where T m (∞) is the melting temperature for the corresponding bulk crystal, D denotes the corresponding diameter, R is the ideal gas constant, and h is the atomic diameter. Δ S vib shows the vibrational part of the overall melting entropy Δ S m . For metallic crystals, Δ S vib (∞) = Δ S m (∞) + R ( x A ln x A + x B ln x B ).…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The size-dependent melting temperature of metallic nanowires T m ( D ) can be described by Jiang’s model T m false( D false) / T m false( normal∞ false) = exp false[ 2 Δ S vib false( normal∞ false) / false( 3 R false) / false( 1 D / 4 h false) false] where T m (∞) is the melting temperature for the corresponding bulk crystal, D denotes the corresponding diameter, R is the ideal gas constant, and h is the atomic diameter. Δ S vib shows the vibrational part of the overall melting entropy Δ S m . For metallic crystals, Δ S vib (∞) = Δ S m (∞) + R ( x A ln x A + x B ln x B ).…”
Section: Resultsmentioning
confidence: 99%
“…The size-dependent melting temperature of metallic nanowires T m (D) can be described by Jiang's model [30][31][32][33][34] where T m (∞) is the melting temperature for the corresponding bulk crystal, D denotes the corresponding diameter, R is the ideal gas constant, and h is the atomic diameter. ∆S vib shows the vibrational part of the overall melting entropy ∆S m .…”
Section: Resultsmentioning
confidence: 99%
“…12 To obtain their sizeand shape-tunable characteristics, the thermodynamic properties of quantum dots should be understood and predicted for practical applications. 13 As is known, the melting temperature T m decreases with increasing surface-to-volume ratio δ, even the surface shape can substantially affects δ values of materials. Up to now, there are numerous models have been developed to describe the sizedependent melting temperature of nanoparticles.…”
Section: Introductionmentioning
confidence: 98%
“…This will result in high energy, numerous defect sites, distinctive electronic state, altered surface crystal structure, and strong absorption at a specific wavelength, etc . To obtain their size- and shape-tunable characteristics, the thermodynamic properties of quantum dots should be understood and predicted for practical applications …”
Section: Introductionmentioning
confidence: 99%