期刊论文详细信息
Journal of Chemical Sciences | |
Sol-gel-cum-hydrothermal synthesis of mesoporous Co-Fe@Al₂O₃−MCM-41 for methylene blue remediation | |
ANIMESH PAUL1  G RANGA RAO1  AMARESH C PRADHAN1  | |
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关键词: Oxides; sol-gel; adsorption; surface properties; composite materials.; | |
DOI : | |
来源: Indian Academy of Sciences | |
【 摘 要 】
A combined sol-gel-cum-hydrothermalmethod has been employed to synthesize novelmonometallic (Mn, Fe, Co) and bimetallic (Co-Fe, Mn-Co, Fe-Mn) nanoparticles loaded onto Alâ‚‚O₃−MCM-41. Powder XRD, N2 sorption, field emission scanning electron microscopy (FESEM) and high resolution transmission electron microscopy (HRTEM) measurements show that the materials possess mesoporosity, high surface area and nanosize. Monometallic Fe, Co and Mn @Alâ‚‚O₃−MCM-41 and bimetallic Co-Fe, Fe-Mn and Mn-Co @Alâ‚‚O₃−MCM-41 materials were tested for methylene blue remediation from aqueous media. In the present study, Co-Fe@Alâ‚‚O₃−MCM-41 was found to be an excellent adsorbent. The adsorption efficiency of Co- Fe@Alâ‚‚O₃−MCM-41 has been studied as a function of adsorbent dose and pH of the solution. Maximum adsorption of methylene blue was obtained at high pH values of the solution. Framework mesoporosity, high surface area, and narrow pore distribution are the key factors for an efficient adsorption of methylene blue onCo-Fe@Alâ‚‚O₃−MCM-41.【 授权许可】
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RO201912040509392ZK.pdf | 423KB | download |