Peculiarities of Low-Temperature Behavior of Liquids Confined in Nanostructured Silicon-Based Material
This study is devoted to the confinement effects on freezing and melting in electrochemical systems containing nanomaterial electrodes and liquid electrolytes. The melting of nanoparticles formed upon freezing of liquids confined in pores of disordered nanostructured <i>n</i>-type silico...
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| Format: | Article |
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MDPI AG
2020-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/10/11/2151 |
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| author | Vladimir Bardushkin Andrey Kochetygov Yulia Shilyaeva Olga Volovlikova Alexey Dronov Sergey Gavrilov |
| author_facet | Vladimir Bardushkin Andrey Kochetygov Yulia Shilyaeva Olga Volovlikova Alexey Dronov Sergey Gavrilov |
| author_sort | Vladimir Bardushkin |
| collection | DOAJ |
| description | This study is devoted to the confinement effects on freezing and melting in electrochemical systems containing nanomaterial electrodes and liquid electrolytes. The melting of nanoparticles formed upon freezing of liquids confined in pores of disordered nanostructured <i>n</i>-type silicon has been studied by low-temperature differential scanning calorimetry. Experimental results obtained for deionized water, an aqueous solution of potassium sulfate, and <i>n</i>-decane are presented. A model is proposed for predicting the melting point of nanoparticles formed during freezing of liquids inside the pores of a disordered nanostructured material. The model is based on the classical thermodynamic concept of the phase transition temperature dependence on the particle size. It takes into account the issues arising when a liquid is dispersed in a matrix of another material: the effect of mechanical stress resulted from the difference in the thermal linear expansion coefficients at a temperature gradient, the effect of the volumetric liquid content in the matrix, the presence of a nonfreezing liquid layer inside the pores, and the effect of wettability of the matrix with the liquid. Model calculations for water and <i>n</i>-decane confined in nanostructured silicon matrix have been carried out considering the volumetric liquid content. The results obtained have been compared with the differential scanning calorimetry data. |
| first_indexed | 2024-03-10T15:15:58Z |
| format | Article |
| id | doaj.art-93e009c857c5423b9e32a3773547624d |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T15:15:58Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-93e009c857c5423b9e32a3773547624d2023-11-20T18:53:38ZengMDPI AGNanomaterials2079-49912020-10-011011215110.3390/nano10112151Peculiarities of Low-Temperature Behavior of Liquids Confined in Nanostructured Silicon-Based MaterialVladimir Bardushkin0Andrey Kochetygov1Yulia Shilyaeva2Olga Volovlikova3Alexey Dronov4Sergey Gavrilov5National Research University of Electronic Technology, Bld. 1, Shokin Square, Zelenograd, 124498 Moscow, RussiaNational Research University of Electronic Technology, Bld. 1, Shokin Square, Zelenograd, 124498 Moscow, RussiaNational Research University of Electronic Technology, Bld. 1, Shokin Square, Zelenograd, 124498 Moscow, RussiaNational Research University of Electronic Technology, Bld. 1, Shokin Square, Zelenograd, 124498 Moscow, RussiaNational Research University of Electronic Technology, Bld. 1, Shokin Square, Zelenograd, 124498 Moscow, RussiaNational Research University of Electronic Technology, Bld. 1, Shokin Square, Zelenograd, 124498 Moscow, RussiaThis study is devoted to the confinement effects on freezing and melting in electrochemical systems containing nanomaterial electrodes and liquid electrolytes. The melting of nanoparticles formed upon freezing of liquids confined in pores of disordered nanostructured <i>n</i>-type silicon has been studied by low-temperature differential scanning calorimetry. Experimental results obtained for deionized water, an aqueous solution of potassium sulfate, and <i>n</i>-decane are presented. A model is proposed for predicting the melting point of nanoparticles formed during freezing of liquids inside the pores of a disordered nanostructured material. The model is based on the classical thermodynamic concept of the phase transition temperature dependence on the particle size. It takes into account the issues arising when a liquid is dispersed in a matrix of another material: the effect of mechanical stress resulted from the difference in the thermal linear expansion coefficients at a temperature gradient, the effect of the volumetric liquid content in the matrix, the presence of a nonfreezing liquid layer inside the pores, and the effect of wettability of the matrix with the liquid. Model calculations for water and <i>n</i>-decane confined in nanostructured silicon matrix have been carried out considering the volumetric liquid content. The results obtained have been compared with the differential scanning calorimetry data.https://www.mdpi.com/2079-4991/10/11/2151electrodeelectrolytenanostructured siliconmelting point depressionbulk density of strain energymodeling |
| spellingShingle | Vladimir Bardushkin Andrey Kochetygov Yulia Shilyaeva Olga Volovlikova Alexey Dronov Sergey Gavrilov Peculiarities of Low-Temperature Behavior of Liquids Confined in Nanostructured Silicon-Based Material Nanomaterials electrode electrolyte nanostructured silicon melting point depression bulk density of strain energy modeling |
| title | Peculiarities of Low-Temperature Behavior of Liquids Confined in Nanostructured Silicon-Based Material |
| title_full | Peculiarities of Low-Temperature Behavior of Liquids Confined in Nanostructured Silicon-Based Material |
| title_fullStr | Peculiarities of Low-Temperature Behavior of Liquids Confined in Nanostructured Silicon-Based Material |
| title_full_unstemmed | Peculiarities of Low-Temperature Behavior of Liquids Confined in Nanostructured Silicon-Based Material |
| title_short | Peculiarities of Low-Temperature Behavior of Liquids Confined in Nanostructured Silicon-Based Material |
| title_sort | peculiarities of low temperature behavior of liquids confined in nanostructured silicon based material |
| topic | electrode electrolyte nanostructured silicon melting point depression bulk density of strain energy modeling |
| url | https://www.mdpi.com/2079-4991/10/11/2151 |
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