نتایج جستجو برای: sulfate radicals

تعداد نتایج: 85826  

Journal: :Journal of environmental chemical engineering 2021

In this study, cobalt sulfide-reduced graphene oxide (CoS-rGO) nanocomposite was prepared by a solvothermal route and its structure, morphology composition were assessed using various techniques, including transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron (XPS) thermogravimetric analysis (TGA). The catalytic performan...

Journal: :Catalysts 2022

The widespread use of bisphenol A (BPA) in industry has resulted BPA contamination water bodies and even endocrine-disrupting effects on organisms humans through transmission. Advanced oxidation processes based sulfate radicals have received increasing attention due to their ability efficiently degrade endocrine disruptors (including BPA) water. In this study, powdered iron (Fe(0)) ferrous (Fe(...

Journal: :International Journal of Research Studies in Education 2021

Journal: :Magnetochemistry 2023

As an abundant potentially dangerous waste, red mud (RM) requires a straightforward method of resource management. In this paper, RM catalyst loaded with cobalt (Co-RM) was prepared by the coprecipitation for efficient activation persulfate (PS). Its degradation performance and mechanism ofloxacin (OFL) were investigated. The characterization results scanning electron microscopy, X-ray diffract...

Journal: :The Biochemical journal 2005
Thomas Nauser Willem H Koppenol Janusz M Gebicki

Current studies provide evidence that proteins are initial targets of ROS (reactive oxygen species) in biological systems and that the damaged proteins can in turn damage other cell constituents. This study was designed to test the possibility that protein radicals generated by ROS can oxidize GSH and assess the probability of this reaction in vivo by measurement of the rate constant of this re...

2012
Eberhard Bothe Man Nien Schuchmann Dietrich Schulte-Frohlinde Clemens von Sonntag

y-Radiolysis of N20-saturated water or photolysis of aqueous H2O2 provided a source of OH radicals. These radicals react with ethanol by preferentially abstracting an H atom at C-l. In the presence of oxygen these radicals are converted into the corresponding peroxyl radicals. The a-hydroxyethylperoxyl radicals decay by first order kinetics (k = ki + k2 [OH -]) acetaldehyde and H02/H+ + 01 bein...

Journal: :Separation and Purification Technology 2022

The pollution due to the presence of contaminants emerging concern (CECs) is a major cause for because serious threat it supposes human health and ecosystem functions. Many efforts have been geared toward their removal guarantee safer freshwater. Metal-organic frameworks (MOFs) are crystalline hybrid materials with high surface area flexible rational design, which allows incorporation different...

Abstract: Let be a commutative ring and be a unitary module. We define a semiprime submodule of a module and consider various properties of it. Also we define semi-radical of a submodule of a module and give a number of its properties. We define modules which satisfy the semi-radical formula and present the existence of such a module.  

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