This paper demonstrates the synthesis of SnO2 nanoparticles using a simple hydrothermal route in presence surfactant hydrazine at 100 °C for 12 h. X-ray diffraction (XRD), field emission scanning electron microscopy, and transmission microscopy (TEM) were employed to characterize as-prepared product, optical property was studied by UV-visible diffuse reflectance spectroscopy (DRS). The XRD pattern sample is indexed tetragonal structure SnO2, calculated particle size 22.4 nm, which further...

A Polyindole-ZnO nanocomposite particle was synthesized by using a chemical oxidative polymerization method. Synthesized characterized UV-Visible, FTIR, SEM, XRD, EDAX and electrical conductivity measurements. The band at ∼3400 cm−1 735 in FTIR spectra confirmed the polyindole formation. XRD spectral studies exhibits major diffraction between 30–40° (2θ) indicates partial crystalline nature of polyindole-ZnO nanocomposite. SEM image reveals agglomerated granular particulate with ZnO embedded...

Abstract A convenient synthesis of 1,3,4-oxadiazole containing derivatives chromeno[4,3- b ]pyridine ( 6a–e , 8a–e and 9a–e ) starting from 4-hydroxycoumarin is presented. The synthesized compounds were screened for in vitro antimicrobial activity against representative bacterial fungal species. MIC (minimum inhibitory concentration) the ranges between 5 15 μg/mL, which comparable with standard drugs. Compounds 6c 8c–e 9c 9e have highest potency certain bacteria fungi.

Iron oxide nanoparticles (IONPs) exhibit unique magnetic properties and possess a high surface-to-volume ratio, making them ideal candidates for the conjugation of substances, including enzymes. Laccase (EC 1.10.3.2), an oxidative enzyme with diverse applications, presents opportunity enhancing stability reusability through innovative immobilization techniques, thus reducing overall process costs. In this study, we employed direct binding procedure via carbodiimide activation to conjugate...

Abstract ZnO nanorods with different sizes and shapes have been successfully synthesized via a simple hydrothermal route, using zinc acetate Cetyltriammonium bromide (CTAB) as the reactants. The thick films of prepared were by screen-printing technique in desired pattern. are characterized X-ray diffraction (XRD), scanning electron microscopy (SEM) transmission (TEM). gas sensing properties materials investigated for various interfering gases such CO 2 , CO, Ethanol, NH 3 H S etc at...

Thick films of AR grade In 2 O 3 were prepared by standard screen-printing technique. The gas sensing performances thick tested for various gases. It showed maximum sensitivity to ethanol vapour at 350 ° C 80 ppm concentration. To improve the and selectivity film towards a particular gas, sensors surface-modified dipping them in solution 2% nanosilver different intervals time. Obtained results indicated that spherical nano-Ag grains are highly dispersed on surface sensor. area nano-Ag/...

Nanostructured SnO2 thin films were prepared by spray pyrolysis technique onto glass substrates with different thickness varying quantity of precursor solution. The structural, optical and electrical properties these have been studied. crystallographic structure the was studied X-ray diffraction (XRD). It is found that are tetragonal (110) orientation. grain size increases thickness. Atomic Force Microscopy (AFM) showed nanocrystalline nature porous nature. increased 14 to 29 nm increase in...

Abstract Thick films of AR Grade nano Fe 2 O 3 material with n-type semiconducting properties were prepared and tested for their gas sensing performances. the materials by screen printing technique. The performance was studied using static system. various gases such as CO, CO , NH Cl H LPG, ethanol S. film showed maximum sensitivity to at 350 °C temperature 250 ppm concentration short response time large recovery time. Physical structural SEM, TEM, XRD UV spectroscopy.

Abstract ZnO nano-particles have been synthesized by simple chemical route using a starting solution consisting of zinc acetate and citric acid as surfactant agent. The structural properties the prepared annealed at different temperatures characterized X-ray diffraction (XRD) transmission electron microscopy (TEM) analyses. XRD patterns show ZnO-wurtize phase in nano-powders, size crystals increases increasing annealing temperatures. TEM images clusters with range 10-20 nm. Electron pattern...

This study examined azo dye methyl red decolorization in a 2 chambered microbial fuel cell (MFC).The primary objectives of the were to construct MFC and evaluate decolorizing degrading bacterium Bacillus circulans potential simultaneous electricity generation process.In MFC, both chambers connected by Nafion 117 Proton exchange membrane Graphite electrodes placed cathode anode chamber for optimum electron transfer performance open circuit system.Under an optimal condition 98% (300 ppm)...

The removal of heavy metal contaminants from the environment is one potential areas in which usefulness biosurfactants has not been thoroughly explored. molecular nature offers possibility interaction with metals solution, aiding their subsequent and/or recovery. In present research work, a systematic isolation and screening program was undertaken for obtaining biosurfactant-producing bacteria. A total 129 isolates were screened three bacterial selected high surface tension reducing ability....

Abstract MoO 3 thin films have been prepared by a simple spray pyrolysis technique at substrate temperature 250°c. The structure and morphology of are characterized X-ray powder diffraction (XRD), scanning electron microscopy UV-vis spectroscopy. gas sensing properties film is studied concentration 400 ppm working 100–400 °c. It was found that the sensitivity depended on temperatures also H 2 S concentration. results show can be used to fabricate high performance sensors.