A new cadmium(II)-imprinted polymer based on cadmium(II) 2,2′-{ethane-1,2-diylbis[nitrilo(E)methylylidene]} diphenolate-4-vinylpyridine complex was obtained via suspension polymerization. The beads were used as a minicolumn packing for flow-injection-flame atomic absorption spectrometry (FI-FAA...

It has been shown that scandium(III) ion in strong chelate complexes with bidentate ligands can increase its coordination number typically from six to seven by formation of inner-sphere adducts with trioctylphosphine oxide (TOPO) or water. Stability constants of tris(tropolonato)scandium(III) an...

This paper reports the investigation aimed at verifying the influence of potassium dihydrogen phosphate and ferric chloride hexahydrate on stabilization/solidification (S/S) processes applied to tailing waste from a Pb and Zn mineral processing plant. The use of cement alone (in a percentage equ...

Research on magnetic particles has expanded over the years. These particles have several properties, such as low cost, fast preparation and use time, high surface area, and easy separation, which allow them to be employed in the purification of molecules, for example, enzymes. In this work, magn...

To demonstrate that three-dimensional (3D) printing technologies can be used to manufacture sophisticated solid phase extraction devices for speciation of trace iron in samples of environmental water, in this study we used a stereolithographic 3D printer and non-functionalized acrylate resin to ...

The kinetics of the reaction between vitamin C (l-ascorbic acid) and ferric chloride hexahydrate was investigated in acidic medium at pH 3 spectrophotometrically. The order of the reaction was established by applying different methods, such as initial rate method, integration method and half-lif...

The electrodeposition of iron(II) on platinum electrodes in chloride melts was studied by cyclic voltammetry. The process is irreversible and is complicated by platinum-iron alloy formation. The deposition is accompanied by iron dendrite formation. Thereby, after achieving a steady state for iro...

Core-shell [email protected]2O3 nanowire is one special nanoscale zero-valent iron (NZVI) with an iron core and an outside shell of iron oxide containing the surface bound ferrous ions, which has been used to remove various pollutants including Cr(VI). However, it can be easily oxidized to accum...

The presence of iron in pregnant leach solutions presents significant processing challenges. The removal of iron impurities from leach solutions by means of iron phosphate precipitation may be a feasible alternative to more conventional iron oxide/iron hydroxide precipitation processes. This stu...

We designed stable and highly reproducible hydrogels by external unidirectional diffusion of Fe2+ ions into aqueous solutions of polygalacturonate (polyGal) chains. The Fe2+ ions act as cross-linkers between the Gal units in such a way that both the molar ratio R ([Fe2+]/[Gal units] = 0.25) and ...

Zn(thqdtc)2, Zn(thqdtc)2(py) and Zn(thiqdtc)2(py) (where thqdtc = 1,2,3,4-tetrahydroquinolinecarbodithioate, thiqdtc = 1,2,3,4-tetrahydroisoquinolinecarbodithioate and py = pyridine) have been used as single source precursors for the synthesis of ZnS nanoparticles. The formation of ZnS nanoparti...

Synthesis of nanostructured semiconductor materials from various single source precursors has been massively explored for potential applications in modern technology. Thermal decomposition method has been employed to prepare nanoparticles zinc sulphide from zinc N-ethyl cyclohexyl dithiocarbamat...

The nanocrystals have characteristics of varying the energy gap between the valence band and the conduction band depending on the size, and are attracting attention as light emitting materials due to the excellent in light stability. Since the bandgap of nanocrystals is determined by the size, i...

Bis(N-furfuryl-N-substituted benzyldithiocarbamato-S,S′)zinc(II) (1–4) [substituted benzyl = 4F–C6H4–CH2– (1), 4Cl–C6H4–CH2– (2), 4OH–C6H4–CH2– (3), 4OCH3–C6H4–CH2– (4)] complexes were prepared and characterized by elemental analysis, IR and NMR (1H and 13C) spectroscopy. Structure...

In the solid state each of three binuclear zinc dithiocarbamates bearing hydroxyethyl groups, {Zn[S2CN(R)CH2CH2OH]2}2 for R = iPr (1), CH2CH2OH (2), and Me (3), and an all alkyl species, [Zn(S2CNEt2)2]2 (4), features a centrosymmetric {ZnSCS}2 core with a step topology; both 1 and 3 were isolate...

Two new zinc and dithiocarbamate integrated metal complexes such as bis(N-cyclopropyl-N-4-methoxybenzyldithiocarbamato-S,S′)zinc(II) (1) and (2,2′-bipyridine)bis(N-cyclopropyl-N-4-methoxybenzyldithiocarbamato-S,S′)zinc(II) (2) have been synthesized and their spectral investigations viz., FT-I...

An electron diffraction study of the MeC(O)PMe2 molecule has been carried out which shows that the bond configuration at phosphorus in this compound is flattened from that observed in methylphosphines and dimethylcyanophosphine. This finding, as well as some lowering of barriers to inversion at ...

Using ab initio gradient calculations at the Hartree—Fock level, the structures of formylphosphine and acetyldimethylphosphine were determined as a function of the torsional angle around the central PCAC bond. Split valence-shell basis sets, augmented by a set of polarization d-functions on the...

The nanoparticles of commercially available pyruvate oxidase (POx) from Aerococcus species were prepared by desolvation method, which were then characterized and covalently immobilized onto gold electrode (AuE) to construct an improved model of amperometric pyruvate biosensor. The POxNPs/Au elec...

Selective oxidation of alcohols allow using them as a key resource for obtaining of aldehydes, ketones, esters and carboxylic acids, which are valuable intermediates and high value products for the fine chemical, pharmaceutical and agrochemical industries. The high environmental impact of curren...