Effect of the acidity ppof aqueous solutions on the wettability of diamond, graphite and pyrocarbon surfaces

Authors
Gribanova, EV Zhukov, AN Antonyuk, IE Benndorf, C Baskova, EN
Citation
Ev. Gribanova et al., Effect of the acidity ppof aqueous solutions on the wettability of diamond, graphite and pyrocarbon surfaces, DIAM RELAT, 9(1), 2000, pp. 1-6
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
DIAMOND AND RELATED MATERIALS
ISSN journal
09259635 → ACNP
Volume
9
Issue
1
Year of publication
2000
Pages
1 - 6
Database
ISI
SICI code
0925-9635(200001)9:1<1:EOTAPA>2.0.ZU;2-6
Abstract
The contact angle theta between the solid/liquid/gas interface was measured in dependence on the pH of the liquid on different carbon surfaces (CVD-di amond films, graphite and pyrocarbon films). As function of the pH, the the ta values show significant changes with maxima and minima. This behavior is interpreted as being due to the presence of surface acidic groups with dif ferent acidic strength. The appearance of maxima and minima in the theta(pH ) curves are caused by the reduction of the solid surface interaction with a minimum dissociation of the individual functional groups. (C) 2000 Publis hed by Elsevier Science S.A. All rights reserved.