نتایج جستجو برای: bi2o3 nanoparticles

تعداد نتایج: 107679  

رشیدی, مهدی, شیرخانلو, حمید, صفاری, مصطفی, عوادی, محمد رضا,

Introduction: During recent years, carcinogenic effects of X-ray have been proven. Todays, lead is used in many equipment such as  coats, thyroid shield, and gloves for body protection against X-ray. However, these equipments have several disadvantegous including toxicity, heaviness, and inflexibility. Hence, newer methods like protective semisolid products (cream, ointment) for topical applica...

2011
Michael Zachariah

This work is a culmination of several corresponding studies designed to probe the initiation and reaction of aluminum nanothermite systems. The main diagnostic tool used in this study is a Temperature-Jump/Time-of-Flight Mass Spectrometer (T-Jump/TOFMS), which uses a filament heating method capable of very high heating rates up to 106 oC/s, while spectra are simultaneously obtained at a time re...

In this work, we report synthesis and characterization of Bi2O3 nanoparticles loaded on mesoporous MCM-41 nanoparticles by a simple solid-state dispersion (SSD) method. Monoclinic bismuth oxide nanoparticles were prepared by polyacrylamide gel method and used as loading materials on the prepared mesoporous MCM-41 as a supporting material. Fourier transform infrared spectroscopy (FT-IR), X-ray p...

Journal: :iranian journal of catalysis 0
seyed ali hosseini department of applied chemistry, urmia university, 5756151818,urmia, iran. ramin saeedi department of applied chemistry, urmia university, 5756151818,urmia, iran.

the photocatalytic activity of nano-bi2o3 was evaluated in degradation of rhodamine b (rhb) as a model of dye pollutant from waste waters. nano sized bi2o3 was synthesized using the chemical precipitation method. the as-prepared sample was characterized by x-ray diffraction (xrd), scanning electron microscopy (sem) and fourier transform infrared spectrometry (ft-ir). structural analysis reveale...

E. Rashtizadeh F. Farzaneh L. Jafari Foruzin Z. Sharif

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...

2013

Invited for this month's cover is the group of Prof. Michael Mehring. The cover picture shows the degradation of the model dye rhodamine B (RhB) in water using β-Bi2O3 nanoparticles as photocatalyst, which was prepared from pre-organized bismuth oxido clusters. For more details, see the Full Paper on p. 146 ff.

In recent years, green synthesis of nanoparticles has attracted a great attention because of medicine and biological applications. In this work, bismuth oxide nanoparticles (Bi2O3 NP) was prepared via green synthesis using mentha pulegium aqueous extract after 24 h at 90°C. The product was characterized by ultraviolet-visible (UV-VIS) spectrophotometer, Fourier transform infrared (FTIR), X-ray ...

Introduction: External radiotherapy is the most common method of radiotherapy which the most important problem associated with is that there is no difference between healthy and tumor tissues in dose absorption. One way to differentiate the dose sensitivity is to use metal-based nanoparticles. Bismuth oxide nanoparticles are good candidates for cancer radiotherapy. In this study, we investigate...

Journal: :Science China. Materials 2022

Bismuth oxide (Bi2O3) has received great attention as the promising battery-type anode due to its high theoretical capacity and wide operating voltage window, yet slow reaction kinetics poor cyclability are major obstacles affecting performance of energy storage devices. Herein, by employing bismuth-based metal-organic framework (MOF) CAU-17 both template precursor, Bi-Bi2O3 nanoparticles encap...

Journal: Nanomedicine Journal 2018
Baharak Divband Mohammad Yousefi Sooteh, Parinaz Mehnati Reza Malekzadeh,

Objective (s): Recently, the use of nanoparticles in medicine has increased for radiation protection purpose. So the aim of this study was application of nano Bi2O3 in prepared shield for dose reduction during medical imaging.Materials and Methods: Nano Bi2O3 shield with 90% silicon and 10% nano Bi2O3 was prepared and dosimetry test was down in radiology by PTW DIADOS E dosimeter.Results: The m...

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