کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5422002 | 1507897 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Theoretical study on the morphology of MgF2 nanocrystals at finite temperature and pressure
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Theoretical study on the morphology of MgF2 nanocrystals at finite temperature and pressure Theoretical study on the morphology of MgF2 nanocrystals at finite temperature and pressure](/preview/png/5422002.png)
چکیده انگلیسی
Periodic density functional theory and surface thermodynamics were combined in a model for the relative stability of rutile-structured MgF2 surfaces in a mixed H2O/HF gas phase. We performed DFT calculations for surfaces (001), (100), (101) and (110), considering H2O and HF adsorption, as well as hydroxylation of the surfaces. The influence of temperature and composition of the gas phase on the surface energies was explored using ab-initio thermodynamics. We found that the relative stability of the surfaces, which depends on their composition, is governed by the thermodynamic equilibrium between gas phase and solid. As a consequence, the morphology of the crystallites strongly varies depending on these parameters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 632, February 2015, Pages 158-163
Journal: Surface Science - Volume 632, February 2015, Pages 158-163
نویسندگان
Elisavet Kanaki, Sebastian Gohr, Carsten Müller, Beate Paulus,