Adsorption of methylene blue onto Fe3O4/activated montmorillonite nanocomposite

作者：Chang, Jiali; Ma, Jianchao; Ma, Qingliang; Zhang, Duoduo; Qiao, Nannan; Hu, Mengxiao; Ma, Hongzhu^*

来源：Applied Clay Science, 2016, 119: 132-140.

DOI：10.1016/j.clay.2015.06.038

• Fe3O4/Mt nanocomposite
• Methylene blue
• Adsorption
• Kinetics
• Isotherm

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, N-2 adsorption-desorption isotherm and scanning electron microscopy. The adsorption capacity of Fe3O4/Mt for methylene blue (MB) was evaluated. Within 25 min, the Fe3O4/Mt nanocomposite (0.5 g) removed 99.47% of the MB from a 120 mg L-1 solution at 293 K 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.

• 出版日期2016-1
• 单位陕西师范大学; 太原理工大学