نتایج جستجو برای: fe3 ions chemosensor
تعداد نتایج: 138952 فیلتر نتایج به سال:
Zinc ferrite (ZnFe2O4) nanoparticles were synthesized via the auto-combustion assisted sol-gel method of Zn2+ and Fe3+ ions (molar ratio 1:2) in ammonia solution. The prepared nanomagnetic catalyst was characterized by IR, XRD, SEM and ICP. The diameter of the ZnFe2O4 MNPs (63.7 nm) was determined by Debye-Scherre equation via their XRD pattern. Nanomagnetic ZnFe2O4 efficiently catalyzes oxidat...
Zinc ferrite (ZnFe2O4) nanoparticles were synthesized via the auto-combustion assisted sol-gel method of Zn2+ and Fe3+ ions (molar ratio 1:2) in ammonia solution. The prepared nanomagnetic catalyst was characterized by IR, XRD, SEM and ICP. The diameter of the ZnFe2O4 MNPs (63.7 nm) was determined by Debye-Scherre equation via their XRD pattern. Nanomagnetic ZnFe2O4 efficiently catalyzes oxidat...
fluorescence chemical sensors for the highly sensitive and selective determination of pb2+ , hg2+, co2+ and fe3+ ions in aqueous solutions are described. the ion sensing system was prepared by incorporating lipophilic ligand (l) as a neutral ion-selective fluoroionophore in the plasticized pvc membrane containing sodium tetraphenylborate or potasium tetrakis (p-chlorophenyl) borate as a liphoph...
Fluorescent imidazole-triazole based ligands L1 and L2 have been designed as chemical push-pull chemosensors for divalent metal ions synthesized through palladium-catalyzed cross-coupling reactions using indium organometallics click chemistry. The novel exhibit intense absorption in the ultraviolet region with high molar extinction coefficients, strong fluorescence emission large Stokes displac...
The mineral surface structure and ions’ interaction were of significant interest to understanding dissolution reaction. In this study, X-ray photoemission spectroscopy combined with ICP emission spectrometer was used investigate the influence leaching reaction conditions 8 M dilute sulfuric acid 12 concentrated on chemical composition, (valence) state ion distribution Columbite-(Fe) (FeNb2O6). ...
Magnetic iron oxide particles decorated with transition-metal nanoparticles have become increasingly attractive in catalysis regarding the environment modifications, such as an additive ligand or carrier, which could significantly influence their performances. In this work, we used Density Functional Theory (DFT) gradient approximation to study interaction between metal and its support for pall...
Sunlight responsible mono- and co-doped TiO2 nanoparticles (Con+ Fen+) were prepared via sol–gel technique. The X-ray diffraction (XRD) results showed no phase change of was observed after the addition Con+ Fen+ ions. Diffuse reflectance spectra (DRS) a significant red-shift absorption edge doping by Con band gap energy reduced sharply from 3.10 to 1.72 eV. photoelectron spectroscopy (XPS) emph...
Water-soluble polymeric chemosensor for detection of Cu2+ ions with high selectivity and sensitivity
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