Klekotka Urszula, Wińska Ewelina, Zambrzycka-Szelewa Elżbieta, Satuła Dariusz, Kalska-Szostko Beata
Institute of Chemistry, University of Białystok, Ciołkowskiego 1K, 15-245, Białystok Poland.
Faculty of Physics, University of Białystok, Ciołkowskiego 1L, 15-245, Białystok, Poland.
Beilstein J Nanotechnol. 2018 Feb 28;9:762-770. doi: 10.3762/bjnano.9.69. eCollection 2018.
In this work, we analyze artificial heavy-metal solutions with ferrite nanoparticles. Measurements of adsorption effectiveness of different kinds of particles, pure magnetite or magnetite doped with calcium, cobalt, manganese, or nickel ions, were carried out. A dependence of the adsorption efficiency on the composition of the inorganic core has been observed. Ferrites surfaces were modified by phthalic anhydride (PA), succinic anhydride (SA), acetic anhydride (AA), 3-phosphonopropionic acid (3-PPA), or 16-phosphohexadecanoic acid (16-PHDA) to compare the adsorption capability of the heavy metals Cd, Cu and Pb. The obtained nanoparticles were structurally characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and Mössbauer spectroscopy. The amounts of Cd, Cu and Pb were measured out by atomic absorption spectroscopy (AAS) and energy dispersive X-ray (EDX) as comparative techniques. The performed study shows that SA linker appears to be the most effective in the adsorption of heavy metals. Moreover, regarding the influence of the composition of the inorganic core on the detection ability, the most effective ferrite MnFeO was selected for discussion. The highest heavy-metal adsorption capability and universality was observed for SA as a surface modifier.
在这项工作中,我们分析了含有铁氧体纳米颗粒的人工重金属溶液。对不同种类的颗粒,即纯磁铁矿或掺杂钙、钴、锰或镍离子的磁铁矿的吸附效果进行了测量。观察到吸附效率与无机核组成之间的依赖关系。用邻苯二甲酸酐(PA)、琥珀酸酐(SA)、乙酸酐(AA)、3-膦丙酸(3-PPA)或16-磷十六烷酸(16-PHDA)对铁氧体表面进行改性,以比较重金属镉、铜和铅的吸附能力。通过透射电子显微镜(TEM)、X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)和穆斯堡尔光谱对所得纳米颗粒进行结构表征。采用原子吸收光谱法(AAS)和能量色散X射线(EDX)作为比较技术测定镉、铜和铅的含量。所进行的研究表明,SA连接体在重金属吸附方面似乎最有效。此外,关于无机核组成对检测能力的影响,选择了最有效的铁氧体MnFeO进行讨论。作为表面改性剂,SA表现出最高的重金属吸附能力和通用性。