| Autor: |
Chih-I Chen, S. C. Max Yen, Fu-Su Yen, Dahtong Ray, Pei-Ching Yu |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Journal of the American Ceramic Society. 96:1118-1123 |
| ISSN: |
0002-7820 |
| DOI: |
10.1111/jace.12268 |
| Popis: |
Porous χ-Al2O3 is a new material for fabricating coated inkjet printing paper. Paper coated with χ-Al2O3 powders has excellent water fastness. This study investigated the dye-fixing ability of χ-Al2O3 powders through measurements of adsorption isotherms. The variations in zeta potential, pore volume, pore size distribution, and specific surface area of χ-Al2O3 powders during the dye-fixing process were also examined. The results show that χ-Al2O3 powders have a strong affinity to dye colorants. The adsorption isotherm is classified as HA-type and the adsorption data fit the Langmuir model. In addition to the positive-charged surface of χ-Al2O3 provides cationic sites for fixing dye colorants via electrostatic interaction, the porous structure on the surface of χ-Al2O3 particles plays an indispensable role in trapping the colorant. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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