ChemInform Abstract: CUPROUS COMPLEXES AND DIOXYGEN. VIII. STERIC FACTORS CONTROLLING ONE- OR TWO-ELECTRON REDUCTION OF MOLECULAR OXYGEN BY CUPROUS COMPLEXES WITH SUBSTITUTED IMIDAZOLES

1978 ◽  
Vol 9 (16) ◽  
Author(s):  
M. GUENTENSPERGER ◽  
A. D. ZUBERBUEHLER
Keyword(s):  
Molecular Oxygen ◽  
Steric Factors ◽  
Electron Reduction

The production of reactive oxygen species enhanced with the reduction of menadione by active thioredoxin reductase

Metallomics ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1490-1497 ◽  
Author(s):  
Jing Li ◽  
Xin Zuo ◽  
Ping Cheng ◽  
Xiaoyuan Ren ◽  
Shibo Sun ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Molecular Oxygen ◽  
Thioredoxin Reductase ◽  
Reactive Oxygen ◽  
Semiquinone Radical ◽  
Ros Production ◽  
Oxygen Species ◽  
Reduction Mechanism ◽  
Radical Intermediate ◽  
Electron Reduction

TXNRD1 participates in the ROS production with menadione by a one-electron reduction mechanism. TXNRD1 transfers electrons from NADPH to menadione to yield a semiquinone radical intermediate, which reacts with molecular oxygen to generate ROS.

scholarly journals Selective electrochemical production of hydrogen peroxide at zigzag edges of exfoliated molybdenum telluride nanoflakes

2020 ◽  
Vol 7 (8) ◽  
pp. 1360-1366 ◽  
Author(s):  
Xuan Zhao ◽  
Yu Wang ◽  
Yunli Da ◽  
Xinxia Wang ◽  
Tingting Wang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
High Activity ◽  
Molecular Oxygen ◽  
Large Mass ◽  
Binding Energies ◽  
Hydrogen Electrode ◽  
Production Of Hydrogen ◽  
Activity Onset ◽  
Electrochemical Production ◽  
Electron Reduction

Abstract The two-electron reduction of molecular oxygen represents an effective strategy to enable the green, mild and on-demand synthesis of hydrogen peroxide. Its practical viability, however, hinges on the development of advanced electrocatalysts, preferably composed of non-precious elements, to selectively expedite this reaction, particularly in acidic medium. Our study here introduces 2H-MoTe2 for the first time as the efficient non-precious-metal-based electrocatalyst for the electrochemical production of hydrogen peroxide in acids. We show that exfoliated 2H-MoTe2 nanoflakes have high activity (onset overpotential ∼140 mV and large mass activity of 27 A g−1 at 0.4 V versus reversible hydrogen electrode), great selectivity (H2O2 percentage up to 93%) and decent stability in 0.5 M H2SO4. Theoretical simulations evidence that the high activity and selectivity of 2H-MoTe2 arise from the proper binding energies of HOO* and O* at its zigzag edges that jointly favor the two-electron reduction instead of the four-electron reduction of molecular oxygen.

Reversible Binding of Molecular Oxygen to Catecholate and Amidophenolate Complexes of SbV: Electronic and Steric Factors

ChemPhysChem ◽  
2012 ◽  
Vol 13 (17) ◽  
pp. 3773-3776 ◽  
Author(s):  
Georgy K. Fukin ◽  
Evgenii V. Baranov ◽  
Andrey I. Poddel'sky ◽  
Vladimir K. Cherkasov ◽  
Gleb A. Abakumov
Keyword(s):  
Molecular Oxygen ◽  
Reversible Binding ◽  
Steric Factors

An efficient copper(III) catalyst in the four electron reduction of molecular oxygen by l-ascorbic acid

2011 ◽  
Vol 334 (1-2) ◽  
pp. 77-82 ◽  
Author(s):  
József S. Pap ◽  
Łukasz Szywriel ◽  
Magdalena Rowińska-Żyrek ◽  
Konstantin Nikitin ◽  
Igor O. Fritsky ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Molecular Oxygen ◽  
Electron Reduction
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