Enhanced adsorptive removal of toxic dyes using SiO 2 nanofibers
| Autor: | Kamran Rasool, Z. Imran, Mushtaq Ahmad, S. S. Batool, Safia Hassan, Muhammad Rafiq |
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| Rok vydání: | 2016 |
| Předmět: |
Langmuir
Aqueous solution Chemistry 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Endothermic process Electrospinning 0104 chemical sciences chemistry.chemical_compound Adsorption Chemical engineering Nanofiber Safranin Methyl orange Organic chemistry General Materials Science 0210 nano-technology |
| Zdroj: | Solid State Sciences. 55:13-20 |
| ISSN: | 1293-2558 |
| Popis: | Electrospinning method was used to synthesize porous SiO2 nanofibers. The adsorption of Methyl Orange and Safranin O by porous SiO2 nanofibers was carried out by varying the parameters such as pH, contact time, adsorbent dose, dye concentration, and temperature. Equilibrium adsorption data followed Langmuir isotherms. Kinetic adsorption followed second-order rate kinetics model. The maximum adsorption capacity for Methyl Orange and Safranin O was found to be 730.9 mg/g and 960.4 mg/g, respectively. Acidic pH was favorable for the adsorption of Methyl Orange while basic pH was favorable for the adsorptions of Safranin O. Modeling study suggested the major mode of adsorption, while thermodynamic study showed the endothermic reactions. This effort has pronounced impact on environmental applications of SiO2 nanofibers as auspicious adsorbent nanofibers for organic material from aqueous solution. |
| Databáze: | OpenAIRE |
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