期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 359, 期 1, 页码 68-74出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2011.03.089
关键词
Mesoporous materials; Magnetic manganese oxide nanostructures; Recyclability; Water treatment
资金
- Hong Kong Research Grants Council (RGC) [112307]
- City University of Hong Kong [7008009]
- National Natural Science Foundation of China [10776034, 20871118]
Magnetic manganese oxide nanostructures are fabricated at room temperature by mixing a KMnO4 solution and oleic acid capped Fe3O4 particles. Oleic acid molecules capped Fe3O4 particles are oxidized by potassium permanganate (KMnO4) in an aqueous solution to produce porous magnetic manganese oxide nanostructures. The synthesis technique can be extended to other MnOx structures with composition of different nanocrystals, such as quantum dots, noble metal crystals which may have important applications as catalysts, adsorbents, electrodes and advanced materials in many scientific disciplines. Transmission electron microscopy, energy-dispersive X-ray spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray powder diffraction. Fourier transform infrared spectroscopy, and nitrogen adsorption-desorption measurements are employed to characterize the structures. As an adsorbent in water treatment, the nanostructures possess a large adsorption capability and high organic pollutant removal rates due to the large surface area and pore volume. The nanostructures are recyclable as their adsorption capability can be recovered by combustion. Furthermore, the strong magnetism exhibited by the structures provides an easy and efficient separation means in wastewater treatment under an external magnetic field. (C) 2011 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据