Tag Archives: metal

Trace metal contamination in the surface sediment of south east coast of India

Sediments are the most important reservoir of trace metals, thus, serve as vital indicator to intercept the mechanism of transportation and accumulation of trace metals in the coastal environment. Sediment texture, mineralogical composition and physical transformation influence

Metal-organic framework with dangling sulfonate groups for enhanced proton conductivity

Metal-organic frameworks (MOFs) provide a versatile platform for tuning the chemical functionality of pore surfaces and thus have attracted an increasing amount of attention for applications in gas storage, molecular separation, sensing, and catalysis. In contrast to

Pollution may impair water, food, ecosystems, health and livelihoods

Trace/heavy metals are cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), iron (Fe), mercury (Hg), manganese (Mn), nickel (Ni), lead (Pb), uranium (U), and Zinc (Zn). Metals pollution can be caused by direct discharge of effluents from

Select the right atom to adjust atomic motions in transition metal dichalcogenides

Transition Metal Dichalcogenides (TMDs) are materials made from sheets of transition metal cations (Mo, W etc.) sandwiched between two sheets of chalcogen atoms (S, Se, Te); such atomic sandwiches are held together by weak forces (e.g. van

Water oxidation by a biomolecule (amavadin) without light contribution

Amavadin is a metallobiomolecule without amino acids that occurs with a significant concentration in a few closely related Amanita fungi, such as A. muscaria. It is a [V(S,S-HIDPA)2]2- complex anion (see Figure 1, assigned with A) with

Electrospun CH3MOF-5/PAN composite nanofibers for SPE of levonorgestrel and megestrol acetate

Electrospinning is a very simple , versatile and high – throughput method for generating continuous nanofibers from a wide range of materials including polymers , composites and ceramics with controllable diameters , compositions and morphologies. It was

Metal–organic framework for “NO” sensing!

Nitric oxide (NO) is a free radical which is found to prevail as a colourless gas. It has a very short life-time (of few seconds) and yet regulates several biological processes in living systems. For its participation

How magnetic interaction between two distant paramagnetic metals is influenced by central diamagnetic cyanidometal?

Magnetism is an ancient and classic physical phenomenon and will be forever interesting topics. Molecule-based magnetic materials, in which the structural building blocks are molecular in nature, are of increasing interest because they provide fundamental insight into

Hair analysis as a novel method for the non-destructive and non-invasive monitoring of metal exposure in bats

As a result of human activities, many wild organisms are exposed to increased concentrations of metals in their environment. Urbanized areas are typically more polluted than remote areas due to enhanced emissions of metals mainly by traffic

Heavy metals and cyanobacteria: towards bioremediation

Heavy metals are one of the most common pollutants worldwide, being a serious hazard to the environment and public health. These metals are usually removed from polluted waters by physicochemical methods that can have substantial costs, low

Binding study of fibrinogen and albumin to metal oxide nanoparticles and its relevance in nanomedicine

The binding of proteins to different inorganic surfaces plays an important role in natural processes such as the growth of bone tissue (protein-mineral interactions) and in biotechnological and biomedical applications. Recently, the binding of proteins to metal

Combining a range of different imaging techniques to better understand the roles metals play in biology

Microscopes in various forms have helped identify disease-causing bacteria, miniaturize microprocessors and engineer superior metal alloys. However, in biology some things remain very difficult to see even at the highest levels of magnification. Metal ions (e.g. calcium,

Streamlined construction of a natural product framework

Nature makes biologically active organic molecules bearing complex polycyclic frameworks equipped with functional groups so efficiently from simple starting materials. For example, arylnaphthalide lignan natural products derived from plants, such as diphyllin, justicidin A, taiwanin E, and

Multiminerals in mammals: longevity, organ biology and other things

Whenever we pick up a bottle of multimineral supplement, some chemical elements often appear on the list of ingredients: sodium, potassium, calcium, magnesium, zinc, iron, and so on. How are they important to us? Well, our bones