S. E. Aga-Tagieva, A. S. Omelyanchik, V. D. Salnikov, K. E. Magomedov, V. V. Rodionova, E. V. Levada
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引用次数: 0
摘要
在各行各业的废水处理中使用磁性纳米颗粒作为吸附剂，可以提高这一过程的效率，减少人类对环境的影响。因此，开发一种具有最佳物理化学特性（尤其是高饱和磁化率）的经济有效的磁性纳米粒子制备方法是当前研究的一项重要任务。在本研究中，我们采用溶胶-凝胶-柠檬酸盐自燃烧法合成了一系列不同化学成分的尖晶石铁氧体磁性纳米粒子。我们得到了一组锌部分取代钴、锰部分取代锰、铝部分取代铁的钴铁氧体纳米粒子。在所研究的样品中，锌掺杂的钴铁氧体纳米粒子在室温下的饱和磁化率最高，达到 88 A m2/kg。用聚乙二醇和十二烷基硫酸钠对合成材料进行表面改性可提高其胶体稳定性，从而提高其吸附能力。
Effect of Doping on the Magnetic and Sorption Properties of Cobalt-Ferrite Nanoparticles
The use of magnetic nanoparticles as sorbents for wastewater treatment in various industries can improve the efficiency of this process and reduce the impact of humans on the environment. Therefore, the development of a cost-effective method for the preparation of magnetic nanoparticles with optimal physical–chemical properties, especially high saturation magnetization, is a crucial task in current research. In this study, we use the sol–gel-citrate self-combustion method to synthesize a series of spinel ferrite magnetic nanoparticles with different chemical compositions. A set of cobalt-ferrite nanoparticles with the partial substitution of cobalt by zinc and manganese and iron by aluminum is obtained. Among the investigated samples, the zinc-doped cobalt-ferrite nanoparticles show the highest saturation magnetization of 88 A m2/kg at room temperature. Surface modification of the synthesized materials with polyethylene glycol and sodium dodecyl sulphate can improve their colloidal stability and as a consequence increase their sorption capacity.
期刊介绍：
Nanobiotechnology Reports publishes interdisciplinary research articles on fundamental aspects of the structure and properties of nanoscale objects and nanomaterials, polymeric and bioorganic molecules, and supramolecular and biohybrid complexes, as well as articles that discuss technologies for their preparation and processing, and practical implementation of products, devices, and nature-like systems based on them. The journal publishes original articles and reviews that meet the highest scientific quality standards in the following areas of science and technology studies: self-organizing structures and nanoassemblies; nanostructures, including nanotubes; functional and structural nanomaterials; polymeric, bioorganic, and hybrid nanomaterials; devices and products based on nanomaterials and nanotechnology; nanobiology and genetics, and omics technologies; nanobiomedicine and nanopharmaceutics; nanoelectronics and neuromorphic computing systems; neurocognitive systems and technologies; nanophotonics; natural science methods in a study of cultural heritage items; metrology, standardization, and monitoring in nanotechnology.
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