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Adsorption of methylene blue onto Fe3O4/activated montmorillonite nanocomposite
Abstract A Fe3O4/activated montmorillonite (Fe3O4/Mt) nanocomposite was prepared by a coprecipitation method. The morphology and structure of the Fe3O4/Mt nanocomposite are explored using X-ray powder diffraction, Fourier transform infrared spectroscopy, N2 adsorption–desorption isotherm and scanning electron microscopy. The adsorption capacity of Fe3O4/Mt for methylene blue (MB) was evaluated. Within 25min, the Fe3O4/Mt nanocomposite (0.5g) removed 99.47% of the MB from a 120mgL−1 solution at 293K and at an original solution pH of 7.37. The experimental adsorption data followed a pseudo-second-order kinetic model and Langmuir isotherm. The reusability of the Fe3O4/Mt was tested and still over 83.73% color removal of MB was obtained after five cycles. The Fe3O4/Mt nanocomposite has good stability and reusability.
Graphical abstract Display Omitted
Highlights A Fe3O4/Mt nanocomposite was prepared by a coprecipitation method. The adsorption capacity of Fe3O4/Mt for methylene blue was evaluated. The adsorption followed pseudo-second-order kinetic model and Langmuir isotherm. The Fe3O4/Mt nanocomposite has good stability and reusability in MB removal.
Adsorption of methylene blue onto Fe3O4/activated montmorillonite nanocomposite
Abstract A Fe3O4/activated montmorillonite (Fe3O4/Mt) nanocomposite was prepared by a coprecipitation method. The morphology and structure of the Fe3O4/Mt nanocomposite are explored using X-ray powder diffraction, Fourier transform infrared spectroscopy, N2 adsorption–desorption isotherm and scanning electron microscopy. The adsorption capacity of Fe3O4/Mt for methylene blue (MB) was evaluated. Within 25min, the Fe3O4/Mt nanocomposite (0.5g) removed 99.47% of the MB from a 120mgL−1 solution at 293K and at an original solution pH of 7.37. The experimental adsorption data followed a pseudo-second-order kinetic model and Langmuir isotherm. The reusability of the Fe3O4/Mt was tested and still over 83.73% color removal of MB was obtained after five cycles. The Fe3O4/Mt nanocomposite has good stability and reusability.
Graphical abstract Display Omitted
Highlights A Fe3O4/Mt nanocomposite was prepared by a coprecipitation method. The adsorption capacity of Fe3O4/Mt for methylene blue was evaluated. The adsorption followed pseudo-second-order kinetic model and Langmuir isotherm. The Fe3O4/Mt nanocomposite has good stability and reusability in MB removal.
Adsorption of methylene blue onto Fe3O4/activated montmorillonite nanocomposite
Chang, Jiali (author) / Ma, Jianchao (author) / Ma, Qingliang (author) / Zhang, Duoduo (author) / Qiao, Nannan (author) / Hu, Mengxiao (author) / Ma, Hongzhu (author)
Applied Clay Science ; 119 ; 132-140
2015-06-28
9 pages
Article (Journal)
Electronic Resource
English
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