Palladium-Substituted Keggin Type Polyoxotungstate Chemically Modified Electrode and Its Catalytic Activity Toward Hydrogen Peroxide Reduction

1998 ◽  
Vol 31 (12) ◽  
pp. 2009-2024 ◽  
Author(s):  
Yan Xie ◽  
Wenliang Sun ◽  
Huizhang Liu ◽  
Jilie Kong ◽  
Gaoyang Xie ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Activity ◽  
Modified Electrode ◽  
Chemically Modified Electrode ◽  
Chemically Modified ◽  
Keggin Type ◽  
Peroxide Reduction ◽  
Hydrogen Peroxide Reduction

scholarly journals Synthesis of Pd–Ni/C bimetallic materials and their application in non-enzymatic hydrogen peroxide detection

2017 ◽  
Vol 35 (3) ◽  
pp. 660-666 ◽  
Author(s):  
Hilal Celik Kazici ◽  
Firat Salman ◽  
Hilal Demir Kivrak
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Activity ◽  
Electrochemical Sensor ◽  
Ni Catalysts ◽  
Simple Route ◽  
Hydrogen Peroxide Detection ◽  
Peroxide Reduction ◽  
Hydrogen Peroxide Reduction ◽  
Electrocatalytic Effect ◽  
Bimetallic Materials

AbstractIn this study, carbon based bimetallic materials (Pd-Ni/C) were synthesized by polyol method in order to increase the hydrogen peroxide reduction catalytic activity of Pd using Ni metal. Hydrogen peroxide reduction and sensing properties of the prepared catalysts were measured by electrochemical methods. As a result, we have established that the addition of Ni at different ratios to Pd has a considerable electrocatalytic effect on H2O2 reduction. This work provides a simple route for preparation of Pd-Ni catalysts to create a very active and sensible electrochemical sensor for H2O2 sensing.

The reduction of oxygen and hydrogen peroxide on dinuclear ruthenium phthalocyanine electrocatalytic surfaces

2001 ◽  
Vol 79 (5-6) ◽  
pp. 992-1001 ◽  
Author(s):  
Mehrdad Ebadi ◽  
Christos Alexiou ◽  
A BP Lever
Keyword(s):  
Hydrogen Peroxide ◽  
Modified Electrode ◽  
Electrocatalytic Reduction ◽  
Pourbaix Diagram ◽  
Peroxide Reduction ◽  
Hydrogen Peroxide Reduction ◽  
Wide Range ◽  
Dinuclear Ruthenium ◽  
Ring Oxidation ◽  
Electron Reduction

The electrochemical properties of both mononuclear L2RuIIPc and dinuclear [(THF)Rupc]2 species are described. The former is dominated by ring oxidation and reduction processes while the latter displays a series of metal localized processes. A Pourbaix diagram describes the various surfaces which can be generated by exposing a graphite electrode modified with [(THF)Rupc]2 to aqueous buffer at different polarization over a wide range of pH. The behavior of these various surfaces towards the electrocatalytic reduction of both oxygen and hydrogen peroxide is described. Most importantly, three different regimes of hydrogen peroxide reduction are observed dependent on the nature of the modified electrode surface. At high pH the four electron reduction of oxygen to water is observed via a 2 + 2 mechanism.Key words: phthalocyanine, ruthenium, ruthenium phthalocyanine, cyclic voltammetry, suface modified electrode, Pourbaix diagram, electrocatalysis, oxygen reduction, hydrogen peroxide reduction.

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