Hydrophobicity of Thin Films of Compounds of Low-Electronegativity Metals

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Hydrophobic materials capable of withstanding harsh conditions are required for various applications. Here, we show that oxides and nitrides of various low-electronegativity metals are hydrophobic hard ceramics. We attribute their hydrophobicity to low Lewis acidity of the low-electronegativity cations implying a low ability of the cations on the surface to form coordinate bonds with water oxygen anions. Furthermore, we observe a systematically stronger hydrophobic behavior of nitrides compared with the corresponding oxides, which we attribute to nitrogen being a poorer Lewis base than oxygen due to a reduced number of lone pairs of electrons, implying a lower ability of nitrogen anions on the surface to form hydrogen bonds with water hydrogen cations. Most of the oxides and nitrides investigated exhibit high values of hardness. Therefore, oxides and nitrides of low-electronegativity metals should find application as hydrophobic materials in harsh conditions.

Original languageEnglish
Pages (from-to)2713-2717
Number of pages5
JournalJournal of the American Ceramic Society
Volume97
Issue number9
DOIs
Publication statusPublished - 1 Sep 2014

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Electronegativity
hydrophobicity
Hydrophobicity
Nitrides
Oxides
Metals
oxide
Cations
Thin films
cation
Positive ions
metal
Anions
anion
Nitrogen
Negative ions
Lewis Bases
hydrogen
Oxygen
oxygen

ASJC Scopus subject areas

  • Ceramics and Composites
  • Geology
  • Geochemistry and Petrology
  • Materials Chemistry

Cite this

Hydrophobicity of Thin Films of Compounds of Low-Electronegativity Metals. / Zenkin, Sergei; Kos, Šimon; Musil, Jindřich.

In: Journal of the American Ceramic Society, Vol. 97, No. 9, 01.09.2014, p. 2713-2717.

Research output: Contribution to journalArticle

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