Author:
Bobik Magdalena,Korus Irena,Dudek Lidia
Abstract
Abstract
Magnetite nanoparticles have become a promising material for scientific research. Among numerous technologies of their synthesis, co-precipitation seems to be the most convenient, less time-consuming and cheap method which produces fine and pure iron oxide particles applicable to environmental issues. The aim of the work was to investigate how the co-precipitation synthesis parameters, such as temperature and base volume, influence the magnetite nanoparticles ability to separate heavy metal ions. The synthesis were conducted at nine combinations of different ammonia volumes - 8 cm3, 10 cm3, 15 cm3 and temperatures - 30°C, 60°C, 90°C for each ammonia volume. Iron oxides synthesized at each combination were examined as an adsorbent of seven heavy metals: Cr(VI), Pb(II), Cr(III), Cu(II), Zn(II), Ni(II) and Cd(II). The representative sample of magnetite was characterized using XRD, SEM and BET methods. It was observed that more effective sorbent for majority of ions was produced at 30°C using 10 cm3 of ammonia. The characterization of the sample produced at these reaction conditions indicate that pure magnetite with an average crystallite size of 23.2 nm was obtained (XRD), the nanosized crystallites in the sample were agglomerated (SEM) and the specific surface area of the aggregates was estimated to be 55.64 m2·g-1 (BET). The general conclusion of the work is the evidence that magnetite nanoparticles have the ability to adsorb heavy metal ions from the aqueous solutions. The effectiveness of the process depends on many factors such as kind of heavy metal ion or the synthesis parameters of the sorbent.
Reference14 articles.
1. Synthesis properties and applications of magnetic iron oxide nanoparticles in Crystal Growth and Characterization of Materials;Teja;Progress,2009
2. Magnetite nanoparticles prepared by precipitation from partially reduced ferric chloride aqueous solutions of and;Qu;Journal Colloid Interface Science,1999
3. de Synthesis and magnetic properties of monodisperse Fe nanoparticles with controlled sizes of Non -;Salado;Journal Crystalline Solids,2008
4. Application of iron oxide nanomaterials for the removal of heavy metals of Nanotechnology ID pages doi;Dave;Journal,2014
5. Nanotechnology - nanomaterials nanoparticles and multifunctional core / shell type nanostructures;Runowski;Chemik,2014
Cited by
17 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献