The new clay modified with triazole and triazolium ligands was prepared in this research. These materials were applied as abundant and eco-friendly adsorbents for removal of heavy metal ions such as Pb(II), Co(II) and Zn(II) ions. The adsorption efficiency of these materials was calculated by relevant equations such as Langmuir and Freundlich as well as kinetic studies with pseudo-first-order and pseudo-second-order models. These adsorbents proved to be very active on heavy metal ion adsorption. The characterization of these new materials was carried out by various techniques such as X-ray diffraction, thermogravimetric analysis, scanning electron microscope (SEM), X-ray photoelectron spectroscopy and energy-dispersive X-ray spectroscopy as well as SEM-map analysis. Eventually, the catalytic activity of the adsorbents which treated with heavy metal ion solutions was studied in the reduction of nitroarenes to its corresponding amines. The prepared adsorbent-catalyst materials indicated efficient catalytic activity in the reduction of nitroarenes to amines in ambient conditions.
In the present study, the aim is to synthesize and introduce the combination of methoxy amido xanthate MAX and then label it with 99mTc radionuclide as a novel diagnostic agent for single-photon computed tomography (SPECT) imaging. A chelator-designed ligand was synthesized from a blend of chloroacetamide and xanthate in certain proportions. After that MAX ligand labeling process was performed by directly milking 99m Tc from the generator ( 99 Mo / 99m Tc). Thus, tin chloride was employed as a reducing agent, and the effect of parameters such as additives like ascorbic acid, changing the concentration of the cheating agent, and pH were evaluated to optimize the labeling conditions. The product was then identified by infrared spectroscopy (FTIR) and magnetic resonance imaging (NMR). Labeling of the complex at laboratory temperature was determined to be 93%. The new 99m Tc-MAX radiopharmaceutical with a radionuclide and radiochemical purity of over 90% can be used as an encouraging diagnostic agent in clinics and preclinical studies, which will be addressed in future studies.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.