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...

Excessive nutrients (N and P) are among the most concerned pollutants in surface and ground waters. Herein, we report nanoscale zero-valent iron/nickel supported on zeolite (Z-Fe/Ni) for simultaneous removal of nitrate and phosphate from aqueous solution. The synergistic effect between zeolite a...

The magnetic iron oxide (Fe3O4)/alginate (Alg) (MAlg) composite beads were synthesized and utilized for the nitrate (NO3−) and phosphate (PO43−) retention. To enhance the functional behaviour and sorption capacity of MAlg composite beads, the amine groups were grafted to get the amine functional...

The importance of fabricating nanoparticles using plant extracts is being emphasized globally, as an alternative to traditional method because they are cost–effective, nontoxic, biocompatible and eco-friendly. In this study, green synthesis of iron nanoparticles (FeNPs) using leaf and seed extr...

This work studies the nitrate removal efficiency in porous media using nanoscale zero valent iron (nZVI) and modified surface of nZVI using Cu metal (known as bimetallic nano-Fe/Cu particles) in a multilayer system through an upflow packed sand column. The effect of multilayer and different thic...

In this paper, we report on the optical characterizations of erbium-doped yttrium alumino-borate glassy thin films prepared by the polymeric precursor and sol–gel routes and the spin-coating technique. High quality planar waveguides were produced by a multilayer processing of Y1−xErxAl3(BO3)4 c...

Herein, the preparation and impedance spectroscopic investigation of pure and Er doped CaCu3Ti4O12 ceramics is reported. FTIR spectroscopy and powder XRD analysis elucidate the surface functionality and crystalline nature of the products respectively. Scanning Electron Microscopy images substant...

ErxTi1 − xO2 nanocomposites was prepared by a simple sol-gel method with various proportion of erbium viz., x = 0.02, x = 0.04, x = 0.06, x = 0.08 and x = 0.10. The prepared nanocomposites were studied using XRD, UV–Vis DRS, Raman spectra, HR-SEM, EDS, TEM, PL and impedance spectroscopy. XRD re...

A series of SCR catalysts of mixed iron–erbium vanadates supported on TiO2–WO3–SiO2 were prepared and their reduction, textural, structural and morphological properties characterized by temperature programmed reduction, X-ray powder diffraction, B.E.T. methods and transmission electron micros...

Large amounts of chromite ore processing residue (COPR) wastes have been deposited in many countries worldwide, generating significant contamination issues from the highly mobile and toxic hexavalent chromium species (Cr(VI)). In this study, sodium dithionite (Na2S2O4) was used to reduce Cr(VI) ...

Enzyme linked immunosorbent assays (ELISAs) are employed for the detection and quantification of antigens from biological sources such as serum and cell culture media. A sandwich ELISA is dependent on the immobilization of a capture antibody, or antibody fragment, and the effective presentation ...

Evidence is growing that metabolites of Cr(III) dietary supplements are partially oxidized to carcinogenic Cr(VI) and Cr(V) in vivo. Hence, we examined oxidations of Cr(III) peptide (triglycine, tetraglycine and pentaglycine) complexes to Cr(VI) and Cr(V) by PbO2 at 37 °C and physiological pH v...

New binuclear chromium (III) niacinamide compound with chemical formula [Cr2(Nic)(Cl)6(H2O)4]·H2O was obtained upon the reaction of chromium (III) chloride with niacinamide (Nic) in methanol solvent at 60 °C. The proposed structure was discussed with the help of microanalytical analyses, condu...

HypothesisTo overcome the contamination of water by heavy metals the adsorption of the pollutant on gel phases is an attractive solution since gels are inexpensive, potentially highly efficient and form a distinct phase while allowing diffusion of the contaminated water throughout the material. ...

Petroleum products are complex mixtures of hydrocarbons. They are important as constituents of fuels and lubricants, and as key raw materials for the chemicals industry. Since there is a potential for accidental releases to the aquatic environment, bioaccumulation of higher hydrocarbons is of co...

The heterocyclic ring in 2-benzylidene-4-phenyl-3-oxazolin-5-one (Ib) is opened by the action of aromatic amines in alcohol with the formation of methyl or ethyl α-arylamino-α-phenyl-acetamidophenylacetates. The IR spectra of the products are discussed and action of hydrazines and benzylamine ...

Soy isoflavones exhibit various biological activities, such as antioxidant, anti-tumor, anti-inflammatory, and cardiovascular protective effects. The present study was designed to investigate the effects of sixteen synthesized 3-amino-2-hydroxypropoxy genistein derivatives on cell proliferation ...

Soy isoflavones exert a wide variety of biological activities, such as antioxidant, anti-inflammatory and anti-cancer properties. Nuclear factor erythroid 2-related factor 2 (Nrf2), a bZip transcription factor, plays a key role in soy isoflavones induced protection against oxidative stress and c...

The relationship between 19F chemical shifts in halogenated propanes and their structures are elucidated using MNDO calculations to determine the population of rotamers. The pairs of atoms gauche to a fluorine atom and van der Waals interaction between the two terminal substituents are responsib...

In this study, an electrochemical deposition was conducted to prepare Al:ZnO. Products in three distinct phases were obtained depending on the [Al3+] added in the bath of 2.0 mM zinc nitrate. For convenient description, [Al3+] (total range 0–1000 μM) was termed as dilute (i.e., [Al3+]  250 μM...