Published in Eurasian Soil Science
AbstractWidespread industrial pollution and its serious ecological and economic consequences make it urgent to develop and refine approaches to remediation of soils as a key ecosystem component. The long-term impact of atmospheric emissions from nonferrous metallurgy enterprises in Monchegorsk (Murmansk region) resulted in the formation of technoge...
Published in Journal of Analytical Chemistry
AbstractA supramolecular dispersive liquid−liquid microextraction method based on the solidification of the floating organic drop (SM-DLLME-SFOD) combined with spectrophotometry was developed for the separation, preconcentration, and determination of trace amounts of nickel from aqueous samples. The method is based on the extraction of the hydropho...
Published in Manufacturing Review
The response of two different types of aluminium matrix composites (AMCs) reinforced with silicon carbide ceramic particulates or nickel metallic particulates to hot compression testing parameters was evaluated. The composites were produced via two-step stir-casting technique. Axisymmetric compression testing was performed on the samples at differe...
Published in Open Agriculture
Industrialization increases the number of heavy metals released into the environment. Lead (Pb2+), nickel (Ni2+) and chromium (Cr6+) are among these toxic metals and cause irreversible effects on ecosystems and human health due to their bio-accumulative potential. The decontamination through adsorption processes using lignocellulosic wastes from ag...
Published in Materials (Basel, Switzerland)
Despite the increasing economic incentives and environmental advantages associated to their substitution, carbon-rich fossil fuels are expected to remain as the dominant worldwide source of energy through at least the next two decades and perhaps later. Therefore, both the control and reduction of CO2 emissions have become environmental issues of m...
Published in Journal of Structural Chemistry
Abstract[Cu(L)2] (1), [Co(L)2] (2), [Ni(L)2]·H2O (3) complexes where L is 2-{[(2-methoxyphenyl)amino]methylene}-5,5-dimethyl-cyclohexane-1,3-dionate are synthesized. Single crystals of complexes 1-3 are obtained. According to X-ray crystallographic data, in the Co and Ni complexes, a coordination polyhedron N2O4 is a distorted octahedron, and in th...
[NiFe]-hydrogenases are metalloenzymes catalyzing the reversible cleavage of H2 into two H+ and two e–. They are particularly interesting for clean and sustainable H2-based energy conversion approaches or the H2-driven regeneration of nucleotide cofactors. Their active site consists of a NiFe(CN)2(CO) moiety coordinated to the protein by four stric...
Published in Chemistry (Weinheim an Der Bergstrasse, Germany)
A series of titanium, nickel , and copper complexes stabilized by the weakly coordinating anion (WCA) [(C2F5)3PF3]− (FAP anion) was obtained on reaction of the parent fluoride complexes with the strong Lewis acid (C2F5)3PF2. The reaction products depend on the solvent used or additional Lewis bases present during the fluoride transfer from the meta...
Birnessite nanosheets (δ-MnO2) are key reactive nanoparticles that regulate metal cycling in terrestrial and marine settings, yet there is no molecular explanation for the sorption selectivity of metals which controls their enrichment. This fundamental question was addressed by optimizing the structure of Ni, Cu, Zn, and Pb surface complexes on δ-M...
Published in Polymers
In this experimental study, the use of 5-hydroxymethyl-furfural (HMF) organic compound as a grafting agent to chitosan natural polymer (CS) was examined. One optimized chitosan derivative was synthesized, and then tested (CS-HMF), in order to uptake nickel, mercury, and barium metal ions from single- and triple-component (multi-component) aqueous s...
