Nanospheres lead complexation

Lead is among the most toxic elements and has widespread presence in the environment (10,11). Common treatment technologies for lead removal include chemical precipitation and adsorption. However, precipitation becomes less effective and more expensive at high metal concentrations (12) and successful adsorption depends on finding low-cost, high-capacity sorbents (12-23) or microorganisms that accumulate toxic metals (24-26). limovative nanospheres have shown promise for lead complexation. 

Module 1 Synthesis of Palladized Nanoscale Iron Particles Module 2 TCE Degradation with Palladized Nanoscale Iron Particles Module 3 Use of Engineered Nanospheres for Lead Complexation Lab To imderstand chemical synthesis for environmental remediation To apply nanotechnology for groimdwater remediation To determine the effectiveness of novel nanospheres for lead complexation... 

Figure 2. Lead complexation with carboxyl fimctionalized nanospheres.

Nearly monodisperse ceria NRs can be synthesized along [100] direction by thermal decomposition of ceria-oleate complex in the presence of oleic acid at 200 °C for 2-14 days. A striking feature is that the ceria NRs are slowly and selectively shortened with time, while the diameter does not change. Adding octadecylamine to the reaction mixture leads to the growth of ceria nanodumbbells and nanospheres (Ahniyaz et al., 2008). 

Similarly, the decomposition of Fe(CO)5 by thermolysis produces metal nanoparticies, the size and shape of which may be controlled by the surrounding medium. For example, a fairly complex procedure was employed for the fabrication of nanorods. Small iron nanospheres are first prepared by thermolysis of Fe(CO)s in the presence of TOPO. Addition of this solution to excess Fe(CO)5 in TOP at 320 °C leads to the production of nanorods... 

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