Difference between revisions of "Origins of surface charge"
From Soft-Matter
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| + | | align="center" style="background:#f0f0f0;"|'''Oxide''' | ||
| + | | align="center" style="background:#f0f0f0;"|'''PZC''' | ||
| + | | align="center" style="background:#f0f0f0;"|'''Oxide''' | ||
| + | | align="center" style="background:#f0f0f0;"|'''PZC''' | ||
| + | | align="center" style="background:#f0f0f0;"|'''Oxide''' | ||
| + | | align="center" style="background:#f0f0f0;"|'''PZC''' | ||
| + | |- | ||
| + | | Ag2O||11.2||HgO||7.3||SnO2||5.6 | ||
| + | |- | ||
| + | | Al2O3||9.1||La2O3||10.1||Ta2O5||2.8 | ||
| + | |- | ||
| + | | BeO||10.2||MgO||12.4||ThO2||9.2 | ||
| + | |- | ||
| + | | CdO||11.6||MnO2||5.3||TiO2 (rutile)||5.7 | ||
| + | |- | ||
| + | | CeO2||8.1||MoO3||2||TiO2 (anatase)||6.2 | ||
| + | |- | ||
| + | | CoO||10.2||Nb2O5||2.8||V2O3||8.4 | ||
| + | |- | ||
| + | | Co3O4||7.4||NiO||10.2||WO3||0.4 | ||
| + | |- | ||
| + | | Cr2O3||7.1||PuO2||9||Y2O3||8.9 | ||
| + | |- | ||
| + | | CuO||9.3||RuO2||5.3||ZnO||9.2 | ||
| + | |- | ||
| + | | Fe2O3||8.2||Sb2O5||1.9||ZrO2||7.6 | ||
| + | |- | ||
| + | | Fe3O4||6.6||SiO2 ||2|||| | ||
| + | |- | ||
| + | | | ||
| + | |} | ||
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[[#top | Top of Page]] | [[#top | Top of Page]] | ||
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== Adsorption of ionic surfactants == | == Adsorption of ionic surfactants == | ||
Revision as of 21:08, 13 November 2008
Contents
Introduction
Origin of charge - Ionic solids
| Substance | PZC |
|---|---|
| Fluorapatite, Ca5(PO4)3(F, OH) | pH = 6 |
| Hydroxyapatite, Ca5(PO4)3(OH) | pH = 7 |
| Calcite, CaCO3 | pH = 9.5 |
| Fluorite, CaF2 | pCa = 3 |
| Barite (syntheitc), BaSO4 | pBa = 6.7 |
| Silver iodide, AgI | pAg = 5.6 |
| Silver chloride, AgCl | pAg = 4 |
| Silver sulphide, Ag2S | pAg = 10.2 |
Origin of charge for oxides
| Oxide | PZC | Oxide | PZC | Oxide | PZC |
| Ag2O | 11.2 | HgO | 7.3 | SnO2 | 5.6 |
| Al2O3 | 9.1 | La2O3 | 10.1 | Ta2O5 | 2.8 |
| BeO | 10.2 | MgO | 12.4 | ThO2 | 9.2 |
| CdO | 11.6 | MnO2 | 5.3 | TiO2 (rutile) | 5.7 |
| CeO2 | 8.1 | MoO3 | 2 | TiO2 (anatase) | 6.2 |
| CoO | 10.2 | Nb2O5 | 2.8 | V2O3 | 8.4 |
| Co3O4 | 7.4 | NiO | 10.2 | WO3 | 0.4 |
| Cr2O3 | 7.1 | PuO2 | 9 | Y2O3 | 8.9 |
| CuO | 9.3 | RuO2 | 5.3 | ZnO | 9.2 |
| Fe2O3 | 8.2 | Sb2O5 | 1.9 | ZrO2 | 7.6 |
| Fe3O4 | 6.6 | SiO2 | 2 | ||
Adsorption of ionic surfactants
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Reference
