Results 271 to 280 of about 1,079,710 (313)

ELECTROCHEMICAL REDUCTION OF OXYGEN

Russian Chemical Reviews, 1965
CONTENTS I. Introduction 717 II. Reduction of oxygen at a mercury electrode 719 III. Reduction of oxygen on platinum and platinum group metals 721 IV.
V S Bagotskii, Lev N Nekrasov, N A Shumilova   +2 more
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Periplasmic oxygen reduction by Desulfovibrio species

Archives of Microbiology, 2001
Washed cells of Desulfovibrio vulgaris strain Marburg (DSM 2119) reduced oxygen to water with H(2) as electron donor at a mean rate of 253 nmol O(2) min(-1) (mg protein)(-1). After separating the periplasm from the cells, more than 60% of the cytochrome c activity and 90% of the oxygen-reducing activity were found in the periplasmic fraction.
A, Baumgarten, I, Redenius, J, Kranczoch, H, Cypionka   +3 more
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Reduction of Postischemic Edema with Hyperbaric Oxygen

Plastic and Reconstructive Surgery, 1985
In recent years, reports have shown positive effects of hyperbaric oxygen (HBO) treatment in posttraumatic circulatory insufficiency of the extremities. A tourniquet model for temporary ischemia was used to examine such treatment in rats. The circulation of the rat hindlimb was interrupted for 3 hours, while the contralateral uninjured leg served as ...
G, Nylander, D, Lewis, H, Nordström, J, Larsson   +3 more
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Earth‐Abundant Nanomaterials for Oxygen Reduction

Angewandte Chemie International Edition, 2015
AbstractReplacing the rare and precious platinum (Pt) electrocatalysts with earth‐abundant materials for promoting the oxygen reduction reaction (ORR) at the cathode of fuel cells is of great interest in developing high‐performance sustainable energy devices. However, the challenging issues associated with non‐Pt materials are still their low intrinsic
Wei, Xia, Asif, Mahmood, Zibin, Liang, Ruqiang, Zou, Shaojun, Guo   +4 more
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Fluorescence Imaging of the Heterogeneous Reduction of Oxygen

Analytical Chemistry, 1996
The reduction of oxygen at a variety of solid electrodes was spatially imaged using fluorescence microscopy. Hydroxide produced during electrolysis of oxygen converted the acid-base indicator, fluorescein, into its fluorescent form. Fluorescence intensity was collected as a function of potential at platinum, silver, and glassy carbon disk electrodes ...
W J, Bowyer, J, Xie, R C, Engstrom
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Neuroglobin: Enzymatic reduction and oxygen affinity

Biochemical and Biophysical Research Communications, 2008
Neuroglobin (Ngb) is a hexacoordinate globin expressed in the nervous system of vertebrates, involved in neuroprotection. O(2) equilibrium measurements on mouse Ngb yielded significantly different P(50) values, ranging from approximately 2 torr to approximately 10 torr. By a kinetic approach minimizing the effects of protein autoxidation, we measured P(
GIUFFRE', ALESSANDRO, MOSCHETTI, TOMMASO, VALLONE, Beatrice, BRUNORI, Maurizio   +3 more
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Oxygen reduction on polycobaltprotoporphyrin film: II. pH effect and the mechanism of oxygen reduction

Acta Chimica Sinica, 1989
The oxygen reduction kinetics on polycobaltprotoporphyrin (PCoPP) film has been examined with the rotating disc electrode technique in O2-saturated solution of various pH. PCoPP film promotes the oxygen reduction process via two electrons to produce peroxide over wide pH range.
Shao-Rong Xiao, Bao-Chen Wang
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The oxygen reduction reaction on [NiFe] hydrogenases

Physical Chemistry Chemical Physics, 2018
Oxygen tolerance capacity is critical for hydrogen oxidation/evolution catalysts.
Siyao Qiu, Seth Olsen, Douglas R. MacFarlane, Chenghua Sun   +3 more
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Platinum-Based Oxygen Reduction Electrocatalysts

Accounts of Chemical Research, 2013
An efficient oxygen reduction reaction (ORR) offers the potential for clean energy generation in low-temperature, proton-exchange membrane fuel cells running on hydrogen fuel and air. In the past several years, researchers have developed high-performance electrocatalysts for the ORR to address the obstacles of high cost of the Pt catalyst per kilowatt ...
Jianbo, Wu, Hong, Yang
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Metal corroles as electrocatalysts for oxygen reduction

Dalton Trans., 2006
The rotating ring disk electrode method has been used to study O2 electroreduction with metal corroles. Catalysis begins at potentials that are 0.5-0.7 V more positive than the expected potential of the M(III/II) couple based on studies in non-aqueous solutions. The path of O2 reduction depends on the nature of the metal ion. Cobalt corroles promote O2
James P, Collman, Marina, Kaplun, Richard A, Decréau   +2 more
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