Low-temperature heat capacity of tin dioxide: new standard data on thermodynamic functions

Gurevich, V. M.; Гавричев, К. С.; Polyakov, V. B.; Clayton, Robert N.; Mineev, S. D.; Hu, G.; Gorbunov, V. E.; Golushina, L. N.

doi:10.1016/j.tca.2004.03.001

Cited by 10 publications

(7 citation statements)

References 5 publications

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“…The assessed value S m,298 (SnO 2 ) = 73.23 J K -1 mol -1 is 1.4-times higher than the experimental value 51.82 J K -1 mol -1 obtained from low-temperature heat capacity measurements. [8] A possible reason for this discrepancy may lie in a variable oxygen stoichiometry of SnO 2 (oxygen vacancy formation yielding a sub-stoichiometric SnO 2-d ) that may stabilize this phase towards higher temperatures and/or lower partial pressures of oxygen. In fact, the Sn 3 O 4 phase can be considered as oxygen deficient SnO 2-d with rutile structure and one-third of oxygen vacancies cumulated in (011) planes in an ordered pattern.…”

Section: Thermodynamic Description Of the Bulk Sn-o Systemmentioning

confidence: 99%

Thermodynamic Modeling of Oxidation of Tin Nanoparticles

Leitner

Sedmidubský

2018

J. Phase Equilib. Diffus.

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A thorough thermodynamic analysis of oxidation of tin nanoparticles was performed. Solid tin oxides SnO 2 , Sn 3 O 4 and SnO were considered according to the bulk phase diagram and a number of experimental results on tin nanostructures oxidation were taken into account in the assessment. Two equilibrium models with different spatial configuration, namely two single-component particles and core-shell model were explored. The surface energies for solid SnO and Sn 3 O 4 were obtained on the basis of DFT calculations while the interfacial energies at SnO 2 (s)/Sn(l) and Sn 3 O 4 (s)/Sn(l) interfaces were assessed using a broken bond approximation. The opposite influence of nanosizing on stability of SnO 2 and SnO/Sn 3 O 4 oxides is demonstrated. It is due to the surface contribution which is higher for SnO 2 (s) than Sn(l) while lower for SnO(s) and Sn 3 O 4 (s) compared to Sn(l). This situation can explain some experimental findings during oxidation of Sn nanoparticles, namely an increased stability of SnO(s) and Sn 3 O 4 (s) with respect to both liquid tin and solid tin dioxide.Keywords surface energy Á thermodynamic modeling Á tin nanoparticles Á tin oxides This invited article is part of a special issue of the Journal of Phase Equilibria and Diffusion in honor of Prof. Jan Vrestal's 80th birthday. This special issue was organized by Prof.

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Section: Thermodynamic Description Of the Bulk Sn-o Systemmentioning

confidence: 99%

Thermodynamic Modeling of Oxidation of Tin Nanoparticles

Leitner

Sedmidubský

2018

J. Phase Equilib. Diffus.

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“…org/codata/databases/key1.html) were calculated on the basis of heat capacity data of Zhogin et al (1980). New calculations of standard thermodynamic functions are presented in a separate paper (Gurevich et al, 2004). In this paper, we consider the isotopic aspect of our calorimetric investigations.…”

Section: Calorimetrymentioning

confidence: 99%

“…8) proposed by Naumov (1994) and Naumov et al (1997), and characteristic temperatures are presented in Table 5. The thermodynamic consequences are discussed further by Gurevich et al (2004).…”

mentioning

confidence: 99%

Oxygen isotope fractionation factors involving cassiterite (SnO2): I. calculation of reduced partition function ratios from heat capacity and X-ray resonant studies

Polyakov

Mineev

Clayton

et al. 2005

Geochimica et Cosmochimica Acta

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“…Among these properties, Debye temperature (θ D ) and phonon moments (µ n ) of nanoparticles have received considerable attention, since with these, many material properties, such as mean square displacement (MSD) and Debye Waller factor (DWF) [2] could be understood. Recently experimental measurements on the specific heats at various temperatures for bulk SnO 2 system [3] are reported. Our present concern is to derive the Debye temperatue ( D θ ), phonon moments ( n µ ), DWF and MSD for tin dioxide (SnO 2 ) from the specific heat measurement [3].…”

Section: Introductionmentioning

confidence: 99%

Thermal Studies on SnO<sub>2</sub> Nanoparticles

Rajamanickam

Mariammal

Ramachandran

2013

AMR

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Theoretical and experimental investigations are made here on the mean square displacement (MSD) and Debye Waller Factor (DWF) of rutile structure of tin dioxide nanoparticles. SnO2 nanoparticles are synthesized by simple co-precipitation method and structurally characterized by X-Ray diffraction which revealed tetragonal rutile structure. Rietveld analysis of XRD measurements and phonon moments are used to deduce the MSD and DWF of nano SnO2. DWF of nano SnO2 obtained from Rietveld analysis (0.21 Å2) is large when compared to the value reported for bulk (0.0035 Å2) which is due to the high surface to volume ratio of the nanoparticles.

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Low-temperature heat capacity of tin dioxide: new standard data on thermodynamic functions

Cited by 10 publications

References 5 publications

Thermodynamic Modeling of Oxidation of Tin Nanoparticles

Thermodynamic Modeling of Oxidation of Tin Nanoparticles

Oxygen isotope fractionation factors involving cassiterite (SnO2): I. calculation of reduced partition function ratios from heat capacity and X-ray resonant studies

Thermal Studies on SnO<sub>2</sub> Nanoparticles

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