نتایج جستجو برای: bismuth nanoparticles
تعداد نتایج: 113562 فیلتر نتایج به سال:
Objective: This work is mainly focused to determine the antibacterial activity of green synthesized Bi2O3 nanoparticles against bacterial strains, Staphylococcus aureus and Escherichia coli using resazurin as indicator.
 Methods: Bismuth oxide were from precursor bismuth nitrate [Bi (NO3)3.5H20] by trachyspermum ammi (ajwain) seed extract. To carry out these works, NPs undergone characteri...
Bismuth oxide (Bi2O3) nanorods was prepared via one pot sol-gel method using Bi(NO3)3.5H2O and starch (as template) in water under hydrothermal condition followed by calcination at 320˚C within 3 h. The resultant solid product was characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), thermogravimetry (TGA), and FTIR techniques. Based on the obtained results, the formatio...
Fifty nine patients with Helicobacter pylon positive duodenal ulcers that failed to heal after a six week course of treatment with H2 blockers were randomly assigned to one of the following three regimens: (i) bismuth subsalicylate, 600 mg three times daily (n=19), (ii) ranitidine, 300 mg at night (n=20), (iii) bismuth subsalicylate plus ranitidine (n=20). Cumulative ulcer healing rates after f...
High edge energy storage with large life-span stable materials have become the most significant and major requirement in near future. Bismuth sulfide (Bi2S3) nanoparticles (NPs) was effectively synthesized by utilizing bismuth diethyldithiocarbamate (Bi[DTC]3) complex as single-source antecedent. The Bi2S3 NPs were affirmed structural, morphological thermal analysis various analytical studies. ...
In the present work, a mesoporous multiphase amorphous crystal nanopowder Bi2O3 with specific surface area of up to 23 m2/g was produced by pulsed electron beam evaporation in vacuum. Influence thermal annealing (200-500 °C) powders air is investigated. The formation droplets size 3-5 nm on all large nanoparticles constituting framework 3D agglomerates found due extrusion liquid bismuth from vo...
The aim of this work was to investigate the structure, optical and magnetic properties bismuth-doped cobalt ferrite nanoparticles (Co $$_{{1-x}}$$ BixFe2O4, x = 0, 0.05, 0.10) prepared by sol-gel technique. X-ray diffraction indicated that samples were cubic spinel with space group Fd3m. crystallite size, lattice parameter, unit cell volume decreased increasing bismuth ion content, which explai...
Uniform bismuth nanospheres were successfully prepared from bismuth nitrate in the presence of poly(N-vinyl-2-pyrrolidone) (PVP) by solvothermal process. The product was characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, selected area electron diffraction, and energy-dispersive X-ray. PVP plays a critical role both as a reducing agent and ...
The Chenopodium album extracts served as a capping agent in the present work to synthesize Bi2O3 Nps. synthesized nanoparticles were confirmed by various spectroscopic techniques. Nano-structured was measured have mean size of 79.99nm. Anti-fungal activity Nps also evaluated. been shown impressive antifungal efficacy against variety fungal species. It's powerful anti-fungal medication that outp...
Bismuth is a heavy metal and was regarded until recently to be the heaviest stable element. It was discovered around ten years ago that the only natural isotope of bismuth, 209Bi, is an alpha emitter with a halflife of 1.9 x 1019 years [1]. Due to the low stability in aqueous solutions of bismuth derivatives with the oxidation number +V, bismuth with the oxidation number +III is regarded as the...
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