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- Title
Design and Preparation of Magnetic CTAB/Montmorillonite Nanocomposite for Phenols Removal.
- Authors
Shen, Rong; Yu, Yichang; Wang, Yue; Xia, Zhining
- Abstract
The cetyltrimethyl ammonium bromide (CTAB)-modified montmorillonite (MMT) was synthesized via a novel "dissolution and reassembly" method. To determine the optimal formula, the adsorption of C.I. Reactive Red 2 (X3B) with CTAB/MMT was investigated. The optimal CTAB/MMT nanocomposite was used to remove 2,6-dichlorophenol and p-nitrophenol from aqueous solutions. The adsorption results can be described by Langmuir isotherm, and the adsorption capacities were 200 mg/g and 125 mg/g for 2,6-dichlorophenol and p-nitrophenol, respectively. To realize the quick separation and recycle, the magnetic CTAB/MMT was further strategized and synthesized. The adsorption equilibrium time was 15 min for both contaminants; the ions' strength showed a little bit of influence on the adsorption performance. In addition, compared with acidic condition, neutral condition was more beneficial to the adsorption reaction. Due to the addition of Fe3O4, the adsorption capacities of this magnetic nanocomposite for 2,6-dichlorophenol and p-nitrophenol were a little bit decreased, which were 170 mg/g and 91 mg/g, respectively. However, the magnetic nanocomposite can be separated within 30 s under an external magnetic field, which would be useful in the practical application. CTAB/MTT nanocomposite was synthesized via a novel 'dissolution and reassembly' method. The as-synthesized nanocomposite showed very good adsorption performance for phenols. The maximum adsorption capacities were 200 and 125 mg/g for 2, 6-dichlorophenol and p-nitrophenol, respectively. The further synthesized magnetic nanocomposite can be separated within 30 s under an external magnetic field.
- Subjects
NANOCOMPOSITE materials; PHENOL analysis; DICHLOROBENZENE; MONTMORILLONITE; MONTMORILLONITE catalysts
- Publication
NANO, 2018, Vol 13, Issue 10, pN.PAG
- ISSN
1793-2920
- Publication type
Article
- DOI
10.1142/S1793292018501230