Synthesis of mesoporous silica by a surface charge reversal route
| Autor: | Wei-Min Zhang, Bao-Qiang Fan, Zhong-Xi Sun, Jia Liu, Zhen-Dong Yang, Willis Forsling |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Chemistry
Metal ions in aqueous solution Inorganic chemistry Binary compound Mesoporous silica Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials Metal chemistry.chemical_compound Colloid and Surface Chemistry Adsorption Nitric acid visual_art Desorption visual_art.visual_art_medium Surface charge |
| Zdroj: | Journal of Colloid and Interface Science. 349:473-476 |
| ISSN: | 0021-9797 |
| Popis: | Pore size adjustable mesoporous silica was synthesized by adsorption of varying amounts of sodium dodecyl benzenesulfonate at the surface of silica activated by zinc ion via a novel surface charge reversal route. The pore size and volume can be adjusted from 5.9 to 13.76 nm and 0.88 to 1.08 cm(3) g(-1), respectively, with increasing the SDBS concentration from 0.77 to 3.08 mmol L(-1). Adsorption of Zn(2+) as a function of pH and N(2) adsorption/desorption isotherms demonstrated that the metal ions such as Zn(2+) could be readily removed with dilute nitric acid without apparent collapse of the pore structure at the proper range of SDBS concentration. |
| Databáze: | OpenAIRE |
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