نتایج جستجو برای: h2o2 decomposition

تعداد نتایج: 112836  

Journal: :ACS applied energy materials 2021

Using hydrogen peroxide (H2O2), a novel approach was applied for the synthesis of LiNi0.5Mn1.5O4 (LNMO) coated with Li3PO4 and doped Al3+ Ti4+ ions. The reaction between LNMO H2O2 resulted in particles partially damaged surface. If same is done presence lithium, aluminum, titanium, phosphate ingredients, then all particle facets are intact show no sign destruction. It appears that decomposition...

Journal: :The Analyst 2013
Shasha Wang Zhaopeng Chen Ling Chen Ruili Liu Lingxin Chen

A novel label-free colorimetric strategy was reported for sensitive detection of copper ions (Cu(2+)) by using the decelerating etching of gold nanorods (GNRs). H2O2 was employed as the oxidant for corrosion of GNRs, leading to the decrease of the aspect ratio of GNRs. In the absence of Cu(2+), the redox corrosion of GNRs by H2O2 occurred rapidly, causing the distinct color change of GNRs from ...

Journal: :Free radical biology & medicine 2014
Justine M Abais Min Xia Guangbi Li Todd W B Gehr Krishna M Boini Pin-Lan Li

Hyperhomocysteinemia (hHcys) is an important pathogenic factor contributing to the progression of end-stage renal disease. Recent studies have demonstrated the implication of nicotinamide adenine dinucleotide phosphate oxidase-mediated NLRP3 inflammasome activation in the development of podocyte injury and glomerular sclerosis during hHcys. However, it remains unknown which reactive oxygen spec...

2011
Michael Holmboe Mats Jonsson

Compacted and water saturated bentonite will be used as an engineered barrier in deep geological repositories for radioactive waste in many countries. Due to the high dose rate of ionizing radiation outside the canisters holding the nuclear waste, radiolysis of the interlayer and pore water in the compacted bentonite is unavoidable. Upon reaction with the oxidizing and reducing species formed b...

2014
Sindhu Joseph P. Jyothi E. P. Yesodharan

Sono, photo and sonophotocatalysis are major Advanced Oxidation Processes (AOP) under intensive investigation as potential technologies for the removal of trace pollutants from water.The techniques involve the formation and participation of Reactive Oxygen Species (ROS) like . OH, HO2 . , O2 . , H2O2 etc. Among these, H2O2 is the most stable and is also a precursor for the reactive free radical...

2017
Ryuichi Sumioka Masanobu Nakata Nobuo Okahashi Yixuan Li Satoshi Wada Masaya Yamaguchi Tomoko Sumitomo Mikako Hayashi Shigetada Kawabata

Streptococcus is the dominant bacterial genus in the human oral cavity and a leading cause of infective endocarditis. Streptococcus sanguinis belongs to the mitis group of streptococci and produces hydrogen peroxide (H2O2) by the action of SpxB, a pyruvate oxidase. In this study, we investigated the involvement of SpxB in survival of S. sanguinis in human blood and whether bacterial H2O2 exhibi...

Journal: :Biosensors & bioelectronics 2014
Nan Li Ya Yan Bao-Yu Xia Jing-Yuan Wang Xin Wang

Tungsten carbide nanorods (WC NRs) are demonstrated for the first time to possess intrinsic peroxidase-like activity towards typical peroxidase substrates, such as 3, 3', 5, 5'-tetramethylbenzidine (TMB) and ο-phenylenediamine (OPD) in the presence of hydrogen peroxide (H2O2). The reactions catalyzed by these nanorods follow the Michaelis-Menten kinetics. The excellent catalytic performance of ...

Journal: :Cellulose 2021

Near-neutral bleaching of cotton fabrics at low temperature is great importance for saving energy and ecological friendliness in textile industry. In this work, glycerol triacetate (GT) was investigated as an activator hydrogen peroxide (H2O2) knitted fabrics, satisfactory whiteness obtained. The properties H2O2/GT system assessed by the CIE index (WI), H2O2 decomposition rate, concentration ge...

2014
Linda Wu Nazhen Liu Zack Qin David W. Shoesmith

A two-dimensional model has been developed to simulate the corrosion of nuclear fuel pellets under permanent waste disposal conditions in a steel vessel with a corrosion-resistant copper shell. The primary emphasis was on the corrosion behavior within cracks with various dimensions. It was shown that a simplified α-radiolysis model which only accounts for the radiolytic production of H2O2 and H...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1990
M B Yim B S Berlett P B Chock E R Stadtman

To examine the structural identities of reactive free radicals and the mechanism of the oxidative modification of proteins, we used EPR and spin-trapping methods to investigate the oxidation of amino acids by H2O2 as well as the decomposition of H2O2 itself catalyzed by Mn(II) ions. Superoxide and hydroxyl radicals (O2-. and OH.) were trapped by a spin trap, 5,5-dimethyl-1-pyrroline-1-oxide (DM...

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