Sol-gel-cum-hydrothermal synthesis of mesoporous Co-Fe@Al2O3-MCM-41 for methylene blue remediation

被引：61
作者：
Pradhan, Amaresh C. [1 ]
Paul, Animesh [1 ]
Rao, G. Ranga [1 ]
机构：
[1] Indian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, India
来源：
JOURNAL OF CHEMICAL SCIENCES | 2017年 / 129卷 / 03期
关键词：
Oxides; sol-gel; adsorption; surface properties; composite materials; MOLECULAR-SIEVES; RHODAMINE-B; PHOTOCATALYTIC DEGRADATION; COMPETITIVE ADSORPTION; HIGHLY EFFICIENT; AQUEOUS-SOLUTION; GRAPHENE OXIDE; REMOVAL; DYE; CARBON;
D O I：
10.1007/s12039-017-1230-5
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A combined sol-gel-cum-hydrothermal method has been employed to synthesize novel monometallic (Mn, Fe, Co) and bimetallic (Co-Fe, Mn-Co, Fe-Mn) nanoparticles loaded onto Al2O3-MCM-41. Powder XRD, N-2 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@Al2O3-MCM-41 and bimetallic Co-Fe, Fe-Mn and Mn-Co@Al2O3-MCM-41 materials were tested for methylene blue remediation from aqueous media. In the present study, Co-Fe@Al2O3-MCM-41 was found to be an excellent adsorbent. The adsorption efficiency of Co-Fe@Al2O3-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 on Co-Fe@Al2O3-MCM-41.
引用
收藏
页码：381 / 395
页数：15
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