Preparation of mesoporous Al-MCM-41 from natural palygorskite and its adsorption performance for hazardous aniline dye-basic fuchsin
| Autor: | Cheng Sun, Hu Lingjie, Yuan Guan, Yongbo Wang, Shaomang Wang, Xin Wang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Inorganic chemistry 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention symbols.namesake Adsorption law Specific surface area medicine General Materials Science Calcination Crystallization Aniline dye Langmuir adsorption model Palygorskite General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Chemical engineering Mechanics of Materials symbols 0210 nano-technology Mesoporous material medicine.drug |
| Zdroj: | Microporous and Mesoporous Materials. 265:266-274 |
| ISSN: | 1387-1811 |
| DOI: | 10.1016/j.micromeso.2016.04.025 |
| Popis: | A promising mesoporous Si Al material, Al-MCM-41 was successfully prepared by alkali calcination leaching of natural palygorskite, and sequent hydrothermal synthesis coupled with calcination. The morphology, structure, surface area and pore-size distribution of the material were characterized by scanning electron microscopy, small-angle X-ray diffraction and N 2 adsorption–desorption isotherms. The Al-MCM-41 possessed better crystallinity and larger specific surface area with CTAB/SiO 2 mass ratio of 0.1:1, pH of 5, crystallization temperature of 110 °C, crystallization time of 12 h and calcination of 550 °C for 5 h. The Al-MCM-41 was used as an adsorbent for the removal of hazardous aniline dye-basic fuchsin from water. Adsorption kinetics and isotherms analysis indicated that adsorption of basic fuchsin onto Al-MCM-41 followed pseudo-first-order model and Langmuir adsorption isotherm. In addition, intra-particle diffusion was rate determining step of the adsorption process. The results demonstrated that the as-synthesized Al-MCM-41 had potential applications in the treatment of waste water. |
| Databáze: | OpenAIRE |
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