Metal oxide nanoparticles are capable of successfully inhibiting bacterial strains. Among the several transition metal atoms, iron (Fe) looks to be a viable dopant since iron oxide has been used a lot in biomedical research due to its biocompatibility and magnetic properties. In order to boost its antibacterial activity and facilitate the entry of nanoparticles into […]
CoTiO3-clay nano-composites were synthesized via a conventional sol-gel method; the gel was calcinated at 500 – 800°C for 2 hours. The presence of rhombohedra phase of CoTiO3 in clay matrix was confirmed by XRD, FTIR, SEM. Cobalt titanate-clay nano-composites were prepared with 5-20%(w/w) by sol-gel method. The spectra results were investigated at 20% (w/w) concentration […]
The study reports some preliminary investigations on the template free synthesis of a scantly investigated polyaniline (PANI) derivative-Phenylenediamine (PDA) by template free method in the presence of Oxalic acid (OA) (dopant), using Ammonium Persulfate as oxidant. Polymerization of Phenylenediamine (PDA) was confirmed by the FT-IR as well as UV–visible studies. The morphology of Phenylenediamine doped […]
The nano sized TiO2 and ZnO are the most active photocatalysts. Methylene blue was used as a reference molecule for the photocatalytic degradation. The TiO2 and ZnO can totally remove methylene blue dye. The effect of various process parameters like initial concentration, contact time, dose of catalyst and pH on the extent of removal of […]
We have used Lithium Aluminum Hydroxide reducing method of silver nitrate to prepare heterogeneous silver-silica nanocomposite particles with thiol and amino groups serving to bind the Ag nanoparticles to the surfaces of the SiO2 nanoparticles. We examined products of these reductions using FTIR, SEM, XRD and UV-vis. spectroscopy. The SiO2 nanoparticles had diameters ranging from […]
Silver nanoparticles with size of 6- 57nm were synthesized by bioreduction method from Anisochilus carnosus aqueous and ethanolic extract. Biosynthesized nanoparticles showed maximum antimicrobial activity against K. pneumonia (13±1.67mm), E.coli (13±1.97mm) and B. subtilis (13±1.07mm) followed by P. aeruginosa and minimum against S. aureus. The quantitative formation, characteristics and impurities of silver nanoparticles were studied […]
Porous Silicon (PS) layers have been prepared from p-type silicon wafers of (100) orientation. SEM, XRD, FTIR and PL studies were done to characterize the surface morphological and optical properties of PS. The porosity of the PS samples was determined using the parameters obtained from SEM images by geometric method. The refractive index values of […]
The aim of this study is to evaluate the influence of pH on the synthesis of nanocrystallines cobalt ferrite by combination of sol- gel auto combustion and ultrasonic irradiation methods. Two different fuels, urea and thiourea, along with metal nitrates (oxidant) were used to prepare CoFe2O4 powders. The morphology of the resulting powders was investigated. […]
In this paper, we used tetranuclear copper (II) Schiff base complexes, [Cu4 (μ-sal2hn) (μ-N3)2(N3)2] (1) and [Cu4 (μ-salophen) (μ1, 1-N3)2(N3)2] (2), as new precursor in solid-state thermal decomposition for the synthesis of CuO nanoparticles. The crystallinity, purity and morphology of the CuO nanoparticles were characterized by Fourier transform infrared (FT-IR), X-ray diffraction (XRD) and scanning […]
ZnO thin films with preferred orientation along the (002) plane were prepared onto the glass substrates by the sol-gel spin coating method for different post- annealing temperatures. The XRD study confirms that the thin films grown by this method have good crystalline hexagonal wurtzite structure. The optical band gap of the samples was determined from […]
