Zhou Chunjiao, Zhang Wenjie, Xia Mingxia, Zhou Weichang, Wan Qiang, Peng Kun, Zou Bingsuo
State Key Lab of CSBC, Micro-Nano Center and College of Materials Science and Technology, Hunan University, Changsha 410082, China.
J Nanosci Nanotechnol. 2013 Jul;13(7):4627-33. doi: 10.1166/jnn.2013.6886.
Poly(acrylic acid) (PAA) coated-Fe3O4 superparamagnetic nano-composites were synthesized through a solvothermal technique by using cheap and environmental friendly iron salts and PAA. Each nano-composite was composed of many small primary nanocrystals. The as-synthesized products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), high resolution transmission electron microscopy (HRTEM), vibrating sample magnetometer (VSM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric-differential scanning calorimetry (TG-DSC) analysis and nitrogen adsorption-desorption measurements. These nano-composites showed rapid adsorption rate and super removal capacity of cation organic dye methylene blue (MB). Moreover, the MB desorption could be easily performed using methanol and acetic acid mixed solution. The reused performance of the nano-composites was also studied.
采用廉价且环保的铁盐和聚丙烯酸（PAA），通过溶剂热法合成了PAA包覆的Fe3O4超顺磁性纳米复合材料。每个纳米复合材料由许多小的初级纳米晶体组成。采用X射线衍射（XRD）、场发射扫描电子显微镜（FE-SEM）、高分辨率透射电子显微镜（HRTEM）、振动样品磁强计（VSM）、傅里叶变换红外光谱（FTIR）、热重-差示扫描量热法（TG-DSC）分析和氮吸附-脱附测量对合成产物进行了表征。这些纳米复合材料对阳离子有机染料亚甲基蓝（MB）表现出快速的吸附速率和超强的去除能力。此外，使用甲醇和乙酸混合溶液可以很容易地实现MB的解吸。还研究了纳米复合材料的重复使用性能。
