How metal (hydr)oxides are protonated in aqueous media:: The (n+1) rule and the role of the interfacial potential

被引：16

作者：

Bourikas, K

Kordulis, C

Lycourghiotis, A ^{[1
]}

机构：

[1] Univ Patras, Dept Chem, GR-26500 Patras, Greece

[2] Hellen Open Univ, Sch Sci & Technol, GR-26222 Patras, Greece

[3] FORTH, ICEHT, GR-26500 Patras, Greece

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2006年 / 296卷 / 02期

关键词：

acidity; interface; Langmuir adsorption; metal (hydr)oxide; protonation; differential potentiometric titration; surface site; interfacial potential;

D O I：

10.1016/j.jcis.2005.11.065

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The mechanism of the protonation of solid metal (hydr)oxides in aqueous media, which is closely interrelated to many processes of great technological and environmental importance, has been elucidated using simulation and experimental work. The electrical potential, smeared out at the interfacial region, changes the concentration of the H+ ions on the surface of the (hydr)oxide, thus promoting or hindering protonation. This is manifested by the shifts of the protonation peaks of the various kinds of surface sites and the appearance of an extra peak in the differential potentiometric, titration curve. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：389 / 395

页数：7

共 19 条

[1]

[Anonymous], J COLLOID INTERFACE

[2] Differential potentiometric titration: Development of a methodology for determining the point of zero charge of metal (hydr)oxides by one titration curve [J].