a simple and efficient method for the chemoselective 1,1-diacetate protection of aromatic aldehydes with acetic anhydride by using ni2+ supported on hydroxyapatite-core-shell magnetic γ-fe2o3 nanoparticles (γ-fe2o3@hap-ni2+) under solvent free conditions. this method has several advantages, including high yield, short reaction time, simple work-up and recyclable property of the catalyst. the ca...

A simple, highly sensitive, accurate and selective method for determination of trace amounts of Ni2+ in water samples. In this paper, Dioctylphthalate (DOP) was used to encapsulate nano-Fe3O4 and produce a nano-Fe3O4-DOP sorbent based new sorbent was prepared. This was treated with ethylenediamine (ED) in another solvent-free procedure for the formation of a novel nano-Fe3O4-DOP-ED. Flame atomi...

The modified surface of Typha latifolia L. root (MSTL), as an alternative economical adsorbent, wasused for the removal of Ni (II) and Cd(II) ions from aqueous solutions. The effect of initial pH, initialconcentration of metal ion, and contact time was investigated in a batch system at room temperature.The kinetics data could be fitted well by pseudo-second-order model with correlation coeffici...

Different concentration (1–5 mol%) of Ni2+-doped FeS2 thin films were deposited by facile ECD technique. XRD pattern Ni2+ ion-doped cubic structure with the high intensity plane (2 0 0). HRSEM images show that undoped 1–2 mol% spherical-like morphology aggregated grains. 3 film was smaller size Electrochemical impedance analysis reveals minimum charge transfer resistance (69 Ω) is obtained for ...

A simple, highly sensitive, accurate and selective method for determination of trace amounts of Ni2+ in water samples. In this paper, Dioctylphthalate (DOP) was used to encapsulate nano-Fe3O4 and produce a nano-Fe3O4-DOP sorbent based new sorbent was prepared. This was treated with ethylenediamine (ED) in another solvent-free procedure for the formation of a novel nano-Fe3O4-DOP-ED. Flame atomi...

the modified surface of typha latifolia l. root (mstl), as an alternative economical adsorbent, wasused for the removal of ni (ii) and cd(ii) ions from aqueous solutions. the effect of initial ph, initialconcentration of metal ion, and contact time was investigated in a batch system at room temperature.the kinetics data could be fitted well by pseudo-second-order model with correlation coeffici...

Soil fertility is determined by biological diversity at all levels of life, from genes to entire biocenoses. The aim this study was evaluate bacterial in soil contaminated with Cd2+, Co2+ and Ni2+ sown Brassica napus. This an important consideration because soil-dwelling microorganisms support phytoremediation minimize the adverse effects heavy metals on environment. Microbial counts, influence...

Ni2+ supported on hydroxyapatite-core@shell γ-Fe2O3 nanoparticles (γ-Fe2O3@HAp-Ni2+) was found to be a useful catalyst for the synthesis of benzimidazole derivatives from o-phenylenediamine and aldehydes under solvent and solvent-free conditions at 80 °C. This reaction affords the corresponding benzimidazole derivatives compared with the classical reactions this method consistently gives a high...

SummaryEnvironmental pollution with heavy metals/metalloids is one of the most important environmental problems, which leads to development bioremediation strategies and search for biomarkers assess its condition. Aim. To determine sensitivity metals actinobacteria isolated from biological fouling natural shell rock mussels Odesa gulf Black Sea. Methods. Thirty-four strains were used in investi...