Hydrophobicity of Thin Films of Compounds of Low-Electronegativity Metals

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F14%3A43922536" target="_blank" >RIV/49777513:23520/14:43922536 - isvavai.cz</a>

Výsledek na webu

<a href="http://onlinelibrary.wiley.com/enhanced/doi/10.1111/jace.13165/" target="_blank" >http://onlinelibrary.wiley.com/enhanced/doi/10.1111/jace.13165/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jace.13165" target="_blank" >10.1111/jace.13165</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydrophobicity of Thin Films of Compounds of Low-Electronegativity Metals

Popis výsledku v původním jazyce

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 thecorresponding 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.

Název v anglickém jazyce

Hydrophobicity of Thin Films of Compounds of Low-Electronegativity Metals

Popis výsledku anglicky

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 thecorresponding 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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP108%2F12%2F0393" target="_blank" >GAP108/12/0393: Tvrdé nanokompozitní vrstvy se zvýšenou houževnatostí a unikátními vlastnostmi</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

JOURNAL OF THE AMERICAN CERAMIC SOCIETY

ISSN

0002-7820

e-ISSN

—

Svazek periodika

97

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

AR - Argentinská republika

Počet stran výsledku

5

Strana od-do

2713-2717

Kód UT WoS článku

000341826500006

EID výsledku v databázi Scopus

—