Dibromido(2,9-dimethyl-1,10-phenanthroline-κ2 N,N′)zinc

The reaction of equimolar amounts of zinc bromide and 2,9-dimethyl-1,10-phenanthroline in dry methanol provided the title compound, [ZnBr2(C14H12N2)], in good yield. The ZnII ion is coordinated in a distorted tetra­hedral environment by two N atoms from the chelating 2,9-dimethyl-1,10-phenanthroline ligand and two bromide ions. There is inter­molecular π–π stacking between adjacent phenanthroline units, with centroid–centroid distances of 3.594 (3) and 3.652 (3) Å

Bis(2-amino-3-methyl­pyridine)­dichlorido­cobalt(II)

In the title compound, [CoCl2(C6H8N2)2], the CoII ion is four-coordinated by two pyridine N atoms from the 2-amino-3-methyl­pyridine ligands and two chloride ions in a distorted tetra­hedral geometry. A weak intra­molecular N—H⋯Cl inter­action occurs. The crystal packing is stabilized by inter­molecular N—H⋯Cl and C—H⋯Cl hydrogen-bond inter­actions

A green synthesis of copper oxide nanoparticles by mechanochemical method

Copper oxide nanoparticles were successfully synthesized by mechanochemical reaction, which is a green, low cost, solvent free, rapid method and followed by calcining treatment. Copper acetate monohydrate and urea were used as reagents and the resulted precursor was calcined at 500 C for 2h in air. The scanning electron microscopy (SEM) revealed the formation of nanoparticles with an average size of about 86 nm. The Fourier transform infrared (FT–IR) spectrum and X-ray powder diffraction (XRD) pattern of the product confirmed all of reflections can be indexed to pure phase of CuO with a monoclinic crystal system. The diffuse reflectance spectrum (DRS) showed a band gap of 1.7 eV

Adsorption of Rhodamine-B from Aqueous Solution by Activated Carbon from Almond Shell

The activated carbon was prepared from an almond shell, which is chemically activated by H2SO4. In the present study, the adsorption of rhodamine-B from water by activated carbon has been investigated and compared. The effect of pH value, initial concentration of dissolved and amount of adsorbent on the adsorption of rhodamine-B by the mentioned adsorbents were investigated. Results showed that the adsorption process was highly dependent on pH. Maximum rhodamine-B removal was achieved when the final pH is 11. Maximum rhodamine-B removal efficiencies were obtained by an almond shell (70%). Adsorption test results revealed that rhodamine-B adsorption on the studied adsorbents could be better described by Langmuir isotherm

(Acetato-κ2O,O′)(acetato-κO)bis(2-amino-3-methylpyridine-κN1)cobalt(II)

In the title compound, [Co(CH3COO)2(C6H8N2)2], the CoII ion is five-coordinated by two pyridine N atoms from two 2-amino-3-methylpyridine ligands, two O atoms from one acetate ion and one O atom from another acetate ion in a distorted trigonal–bipyramidal geometry. The pyridine rings are nearly perpendicular to each other [dihedral angle = 84.49 (16)°]. The crystal packing is stabilized by intramolecular and intermolecular N—H...O hydrogen-bonding interactions

SIMPLE SOLID STATE SYNTHESIS OF NANOSTRUCTURED AG6MO10O33 AND NI-SUBSTITUTED AG6MO10O33 POLYOXOMETALATES WITH PHOTOCATALYTIC CHARACTERISTIC

In this work, we report the synthesis of silver decamolybdate, Ag6Mo10O33, nanostructure by a simple mechanohemical process followed by calcination treatment using acetamide as driving agent. Morphological study by scanning electron microscopy (SEM) images revealed bundles of rods grown closely together with an average diameter of 92 nm for Ag6Mo10O33 sample. Ni-substituted Ag6Mo10O33 compound was prepared via introducing nickel cation to precursor system in mechanical milling step. The particle size decreased to 87 nm by incorporating nickel units in substituted polymolybdate. It was concluded that the suitable selection of reagents can direct solid phase reaction towards producing nanostructured products. This technique is easy and simple for preparation of various mixed metal oxides without using any solvents and or complex procedures. In addition, the photocatalytic activity of the prepared products was studied on the removal of 4-nitro phenol (4-NP) as organic pollutant from water. The obtained results were also discussed in detail