Mepco Schlenk Engineering College

About: Mepco Schlenk Engineering College is a based out in . It is known for research contribution in the topics: Wavelet & Wavelet transform. The organization has 1307 authors who have published 1665 publications receiving 18690 citations.

Synthesis, spectroscopic characterization, redox, and biological screening studies of some schiff base transition metal(ii) complexes derived from salicylidene-4-aminoantipyrine and 2-aminophenol/ 2-aminothiophenol

Abstract: Neutral complexes of Cu(II), Ni(II), Co(II), Mn(II), VO(IV) and Zn(II) have been synthesised from the Schiff bases derived from salicylidene-4-aminoantipyrine and 2-aminophenol/2-aminothiophenol. The structural features have been arrived at from their microanalytical, IR, UV-Vis., 1H NMR and ESR spectral data. All of the complexes exhibit square-planar geometry except the Mn(II) and VO(IV) complexes. The Mn(II) chelates show an octahedral environment and the VO(IV) chelates exist in a square-pyramidal geometry. The non-electrolytic and monomeric nature of the complexes are evidenced by their magnetic susceptibility and low conductance data. The electrochemical behaviour of the Cu(II), Mn(II) and VO(IV) complexes in DMSO at 300 °K were studied. [CuL1] complex shows an irreversible peak for the copper(II)/copper(I) couple at Epc1 = 0.16 V and Epa = 0.53V referenced to Ag/AgCl. The cyclic voltammogram of the [CuL2] complex in MeCN at 300°K shows a quasi-reversible peak for the couples copper(II)/copper(III) ...

Photo-catalytic degradation of methyl violet dye using zinc oxide nano particles prepared by a novel precipitation method and its anti-bacterial activities

Abstract: Synthesis of different shaped nano-particles using novel methodologies always attracts great importance in research. This report details with the preparation of zinc oxide nano particles (ZnO NPs) using a very simple, efficient precipitation method. ZnO NPs were obtained by the calcination of zinc oxalate powder precipitated from a reaction mixture containing zinc acetate and ammonium oxalate. As obtained ZnO NPs were characterized using field emission scanning electron microscopy (FESEM), X-Ray Diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR), photo-luminescence spectroscopy, etc. The photo-catalytic property of ZnO NP was studied using UV–vis spectroscopy for the degradation of methyl violet (MV) by exposing to sunlight. Complete degradation of methyl violet was noticed on exposing the suspension containing sonicated ZnO NPs in an aqueous medium with MV in 60–80 min. Antibacterial studies of ZnO NPs were performed against bacterial strains such as Pseudomonas aeruginosa , Escherichia coli and Staphylococcus aureus . ZnO NPs exhibit high inhibition towards P. aeruginosa and E. coli ; however it shows minimum inhibition towards S. aureus . A difference of 0.461 a.u was observed in the mean of optical densities between P. aeruginosa and S. aureus . Statistical t -test was performed to find the significance of this difference and the results confirmed that this difference was due to the influence of the prepared ZnO NPs on the bacterial strains.