-Mediated Silver Nanoparticles as Effective and Reusable Adsorbents for the Removal of Methylene Blue from Water.

Green synthesis of silver nanoparticles (AgNPs) using a plant extract has attracted significant attention in recent years. It is found as an alternative for other physicochemical approaches because of its simplicity, low cost, and eco-friendly rapid steps. In the present study, ()-mediated AgNPs have been shown to be effective bioadsorbents for methylene blue (MB) dye removal (88.

Size controlled biosynthesis of silver nanoparticles using and aqueous leaf extract and their antimicrobial activity.

In this work, the aqueous leaf extracts of three genus species, namely (), () and (), have been used as the reducing and capping agents to control the size of AgNPs, -AgNPs, -AgNPs and -AgNPs, respectively and found to be an effective antimicrobial agent against a wide range of bacteria and fungi. The biosynthesized AgNPs were studied by UV-Visible spectrophotometer, powder X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray, transmission electron microscopy (TEM) and Fourier transform infrared spectrometer (FTIR). The average particle sizes of -AgNPs, -AgNPs and -AgNPs were measured as 17 nm, 22 nm and 26 nm, respectively, and observed to be spherical and face-centered cubic crystals.

Cadmium(II) compounds of the bis-cyanoethyl derivative (L) of Me[14]aneC (L): characterization and antibacterial studies.

The isomeric ligand L, a saturated analogue of 2,9-C-meso-Me[14]diene, on reflux with excess acrylonitrile afforded 1,8-N-pendant cyanoethyl derivative L. Interaction of L with cadmium(II) perchlorate, nitrate, acetate, and chloride salts produced six coordinated octahedral compounds, [Cd(L) (ClO)]∙2HO, [Cd(L) (NO)], [Cd(L) (CHCOO)], and [Cd(L)Cl], respectively. Further, axial substitution reactions between [Cd(L) (ClO)]∙2HO and KI, KBr, KCl, KSCN, and NaNO in a 1:2 ratio yielded six coordinated octahedral compounds, [Cd(L)I]∙HO, [Cd(L)Br]∙2HO, [Cd(L)Cl(ClO)]∙2HO, [Cd(L) (NCS)]∙HO, and [Cd(L) (NO) (ClO)]∙2HO, respectively.

Does open-beach ship-breaking affect the mineralogical composition of soil more adversely than typical industrial activities?

In Bangladesh, India, and Pakistan the ship breaking (SB) sector dismantles end-of-life ships on open beaches, exposing the environment to the resulting pollution, especially the soil and water. Because SB occurs in the vicinity of other poorly-regulated activities in industrial zones (IZ) in these countries, there is some ambiguity concerning the relative roles played by SB and IZ in the accumulation of hazardous materials in the soil. In the absence of comparative studies, this study investigated the relative levels of soil contamination due to SB or IZ in the same geographic region by taking soil samples from SB and unrelated IZs in Chittagong, Bangladesh.

Benzyl 3-[(E)-(furan-2-yl)methyl-idene]-2-methyldithio-carbazate.

In the title compound, C(14)H(14)N(2)OS(2), the furan ring exhibits rotational disorder over two orientations, with an occupancy ratio of 0.508 (7):0.492 (7).

5-Hy-droxy-3-methyl-5-phenyl-4,5-di-hydro-1H-pyrazole-1-carbothio-amide.

In the title compound C(11)H(13)N(3)OS, the aromatic ring and the dihydro-pyrazole ring are oriented orthogonally with respect to each other, making a dihedral angle of 89.92 (9)°. An intra-molecular O-H⋯S hydrogen bond occurs.

Synthesis and antimicrobial activities of isomers of N(4),N(11)-dimethyl-3,5,7,7,10,12,14,14-octamethyl-1,4,8,11-tetraazacyclotetradecane and their nickel(II) complexes.

The reactions of two isomers of 3,5,7,7,10,12,14,14-octamethyl-1,4,8,11-tetraazacyclotetradecane (differing in the orientation of the methyl groups on the chiral carbon atoms), designated as L(B) and L(C), with CH(3)I in the ratio of 1:4 resulted in the substitution of the N(4) and N(11) protons by CH(3) groups, forming the dimethyl derivatives L(BZ) and L(CZ), respectively. These ligands, on interaction with nickel(II) acetate tetrahydrate and subsequent addition of lithium perchlorate, produce square-planar yellow [NiL(BZ)][ClO(4)](2) and orange [NiL(C'Z)][ClO(4)](2). These nickel complexes undergo axial ligand addition reactions with NCS(-), Cl(-), Br(-), and I(-) as X(-) to form six-coordinate trans-diisothiocyanato, -dichloro, -dibromo, and -diiodo complexes of formula [NiLX(2)], where L = L(BZ) or L(C'Z), and X = SCN, Cl, Br, or I.