Fe3 O4/POMs纳米复合物的合成及对次甲基蓝的吸附性研究  

Synthesis of Fe3O4/POMs nanocomposites and their adsorption capability of methylene blue

作　　者：李春艳 魏葆婷[1] 景国岐 刘红玲 韩秋霞[2] LI Chunyan;WEI Baoting;JING Guoqi;LIU Hongling;HAN Qiuxia(Henan Chemical Technician College,Kaifeng 475004,Henan,China;College of Chemistry and Chemical Engineering,Henan University,Kaifeng 475004,Henan,China)

机构地区：[1]河南化工技师学院,河南开封475004 [2]河南大学化学化工学院,河南开封475004

出　　处：《化学研究》2020年第6期492-498,共7页Chemical Research

基　　金：国家自然科学基金资助项目(51172064).

摘　　要：以Fe3O4与[Co(L)2(H2O)2]2[P2Mo5O23]·2H2O(POMs,L=pyridine-2-carboxamide)为原料成功合成Fe3O4/POMs纳米复合物.通过透射电子显微镜(TEM)、X射线衍射仪(XRD)、紫外可见分光光度计(UV-Vis)、傅立叶变换红外光谱仪(FT-IR)、荧光光谱仪(PL)和振动样品磁强计(VSM)对Fe3O4/POMs纳米复合物进行结构和性质研究,结果表明合成的Fe3O4/POMs纳米复合物平均粒径为13.03 nm,几乎呈球形,大小较为均匀,室温下显示良好的光学和磁学性能,在黑暗条件下,Fe3O4/POMs纳米复合物能有效吸附有色染料次甲基蓝.该纳米复合物在吸附、磁学和生物医学方面都具有潜在应用.Fe3O4/[Co(L)2(H2O)2]2[P2Mo5O23]·2H2O(Fe3O4/POMs,L=pyridine-2-carboxamide)nanocomposites were successfully synthesized by Fe3O4 and[Co(L)2(H2O)2]2[P2Mo5O23]·2H2O.The nanocomposites were investigated using transmissionelectronmicroscopy(TEM),X-ray powder diffraction(XRD),ultraviolet-visible spectrophotometer(UV-Vis),fourier transform infrared spectroscopy(FTIR),photoluminescence spectrophotometer(PL)and vibrating sample magnetometer(VSM).The Fe3O4/POMs nanocomposites are virtually uniform and nearly spherical in shape with an average diameter about 13.03 nm.The structure of the Fe3O4/POMs nanocomposites were confirmed by X-ray powder diffraction(XRD).The fourier transform infrared spectroscopy(FT-IR)further shows the formation of the Fe3O4/POMs nanocomposites.The UV-Vis spectrum of Fe3O4/POMs shows a well-behaved absorption band locating at^216 nm and^260 nm from POMs.The PL emission spectrum reveals that the Fe3O4/POMs nanocomposites manifest one visible fingerprint photoluminescent emissions at^413 nm.The hysteresis curve acquired clearly shows that the Fe3O4/POMs nanocomposites are soft ferromagnetic or near superparamagnetic at 300 K with a coercivity of^23.89 Oe.Furthermore,Fe3O4/POMs nanocomposites could effectively adsorb the color dye methylene blue in the dark.The magnetic-optical nanocomposites are promising for adsorptive,optical and magnetic applications.

关 键 词：Fe3O4/POMs纳米复合物 光学性质 磁学性质 次甲基蓝吸附 

分 类 号：O614.8[理学—无机化学]