Synthesis of dithiols as reducing agents for disulfides in neutral aqueous solution and comparison of reduction potentials

1993 ◽  
Vol 58 (3) ◽  
pp. 633-641 ◽  
Author(s):  
Guy V. Lamoureux ◽  
George M. Whitesides
Keyword(s):  
Aqueous Solution ◽  
Reducing Agents ◽  
Reduction Potentials ◽  
Neutral Aqueous Solution

Reduction Potentials of SO3•-, SO5•-, and S4O6•3-Radicals in Aqueous Solution

1999 ◽  
Vol 103 (18) ◽  
pp. 3581-3588 ◽  
Author(s):  
Tomi Nath Das ◽  
Robert E. Huie ◽  
P. Neta
Keyword(s):  
Aqueous Solution ◽  
Reduction Potentials

scholarly journals Generation of reactive oxygen species by promoting the Cu(II)/Cu(I) redox cycle with reducing agents in aerobic aqueous solution

2018 ◽  
Vol 78 (6) ◽  
pp. 1390-1399 ◽  
Author(s):  
Wenshu Li ◽  
Peng Zhou ◽  
Jing Zhang ◽  
Yongli Zhang ◽  
Gucheng Zhang ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Aqueous Solution ◽  
Superoxide Radical ◽  
Reactive Oxygen ◽  
Reducing Agents ◽  
Oxygen Species ◽  
Redox Cycle ◽  
Copper Species ◽  
Chain Reactions ◽  
H2o2 Generation

Abstract This study investigated the generation of reactive oxygen species (ROS) (O2−•, H2O2, and HO•) by promoting the Cu(II)/Cu(I) redox cycle with certain reducing agents (RAs) in aerobic aqueous solution, and benzoic acid (BA) was employed as indicator for the hydroxyl radical (HO•). Hydroxylamine (HA) can reduce Cu(II) to Cu(I) to induce chain reactions of copper species resulting in the generation of the superoxide radical (O2−•) and hydrogen peroxide (H2O2), and the intermediate Cu(I) can further activate H2O2 via a Fenton-like reaction to produce HO•, creating the remarkable BA degradation. O2 is indispensable, and unprotonated HA is the motive power in the O2/Cu/HA system. Moreover, pH is a crucial factor of the O2/Cu/HA system due to the protonated HA not being able to reduce Cu(II) into Cu(I). The oxidation of HA can be effectively induced by trace amounts of Cu(II), and both a higher HA dosage and a higher Cu(II) dosage can enhance H2O2 generation and BA degradation. In addition, some other RAs that can reduce Cu(II) into Cu(I) could replace HA in the O2/Cu/HA system to induce the generation of these ROS in aerobic aqueous solution.

A Highly Sensitive and Selective Fluorescent Chemodosimeter for Hg2+ in Neutral Aqueous Solution

2007 ◽  
Vol 17 (5) ◽  
pp. 460-465 ◽  
Author(s):  
Fang-Ying Wu ◽  
Yong-Qiang Zhao ◽  
Zhao-Jun Ji ◽  
Yu-Mei Wu
Keyword(s):  
Aqueous Solution ◽  
Highly Sensitive ◽  
Neutral Aqueous Solution ◽  
Fluorescent Chemodosimeter

THE CHEMISTRY OF ETHYLENE OXIDE: V. THE REACTION OF ETHYLENE OXIDE WITH HALIDE IONS IN NEUTRAL AND ACID SOLUTION

1952 ◽  
Vol 30 (3) ◽  
pp. 169-176 ◽  
Author(s):  
A. M. Eastham ◽  
G. A. Latremouille
Keyword(s):  
Aqueous Solution ◽  
Ethylene Oxide ◽  
Acid Solution ◽  
Activation Energies ◽  
Hydrogen Halide ◽  
Halide Ions ◽  
Neutral Aqueous Solution ◽  
Rate Of Hydrolysis ◽  
Acid Catalyzed ◽  
Hydrolysis Of

The rates of reaction of halide ions with ethylene oxide in neutral aqueous solution and the rate of hydrolysis of ethylene oxide in acid solution have been measured and the activation energies determined. From these data and from the ratio of glycol to chlorohydrin formed when ethylene oxide reacts with excess aqueous hydrogen halide, the rates of the acid-catalyzed addition of halide ions to ethylene oxide at 25 °C. have been estimated.

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