Electrocatalytic properties of the polypyrrole/magnetite hybrid modified electrode towards the reduction of hydrogen peroxide in the presence of dissolved oxygen

2012 ◽  
Vol 73 ◽  
pp. 53-58 ◽  
Author(s):  
Gábor Bencsik ◽  
Csaba Janáky ◽  
Balázs Endrődi ◽  
Csaba Visy
Keyword(s):  
Hydrogen Peroxide ◽  
Dissolved Oxygen ◽  
Modified Electrode ◽  
Electrocatalytic Properties

scholarly journals Killing of Bacillus Spores by Aqueous Dissolved Oxygen, Ascorbic Acid, and Copper Ions

2003 ◽  
Vol 69 (4) ◽  
pp. 2245-2252 ◽  
Author(s):  
J. B. Cross ◽  
R. P. Currier ◽  
D. J. Torraco ◽  
L. A. Vanderberg ◽  
G. L. Wagner ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Ascorbic Acid ◽  
Dissolved Oxygen ◽  
Hydroxyl Radicals ◽  
Fenton Reaction ◽  
Copper Ions ◽  
Transition Metal Ions ◽  
Fenton Reagent ◽  
Bacillus Spores ◽  
Modified Fenton

ABSTRACT An approach to decontamination of biological endospores is discussed. Specifically, the performance of an aqueous modified Fenton reagent is examined. A modified Fenton reagent formulation of cupric chloride, ascorbic acid, and sodium chloride is shown to be an effective sporicide under aerobic conditions. The traditional Fenton reaction involves the conversion of hydrogen peroxide to hydroxyl radical by aqueous ionic catalysts such as the transition metal ions. Our modified Fenton reaction involves the conversion of aqueous dissolved oxygen to hydrogen peroxide by an ionic catalyst (Cu2+) and then subsequent conversion to hydroxyl radicals. Results are given for the modified Fenton reagent deactivating spores of Bacillus globigii. A biocidal mechanism is proposed that is consistent with our experimental results and independently derived information found in the literature. This mechanism requires diffusion of relatively benign species into the interior of the spore, where dissolved O2 is then converted through a series of reactions which ultimately produce hydroxyl radicals that perform the killing action.

scholarly journals Electrochemical Sensing of Ascorbic Acid, Hydrogen Peroxide and Glucose by Bimetallic (Fe, Ni)−CNTs Composite Modified Electrode

2019 ◽  
Vol 31 (5) ◽  
pp. 851-857 ◽  
Author(s):  
Sayed Tayyab Raza Naqvi ◽  
Bahareh Shirinfar ◽  
Dilshad Hussain ◽  
Saadat Majeed ◽  
Muhammad Naeem Ashiq ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Ascorbic Acid ◽  
Modified Electrode ◽  
Electrochemical Sensing

Enhanced Electrocatalysis for the Reduction of Hydrogen Peroxide at New Multiwall Carbon Nanotube Grafted Polydiphenylamine Modified Electrode

2006 ◽  
Vol 18 (9) ◽  
pp. 894-903 ◽  
Author(s):  
Padmanabhan Santhosh ◽  
Kalayil Manian Manesh ◽  
Kwang-Pill Lee ◽  
Anantha Iyengar Gopalan
Keyword(s):  
Hydrogen Peroxide ◽  
Carbon Nanotube ◽  
Modified Electrode ◽  
Multiwall Carbon Nanotube ◽  
Multiwall Carbon
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