Detection of Hydrogen Peroxide Produced during Electrochemical Oxygen Reduction Using Scanning Electrochemical Microscopy

2008 ◽  
Vol 80 (3) ◽  
pp. 750-759 ◽  
Author(s):  
Yan Shen ◽  
Markus Träuble ◽  
Gunther Wittstock
Keyword(s):  
Hydrogen Peroxide ◽  
Oxygen Reduction ◽  
Scanning Electrochemical Microscopy ◽  
Electrochemical Microscopy ◽  
Electrochemical Oxygen

scholarly journals Ultramicrosensors based on transition metal hexacyanoferrates for scanning electrochemical microscopy

2013 ◽  
Vol 4 ◽  
pp. 649-654 ◽  
Author(s):  
Maria A Komkova ◽  
Angelika Holzinger ◽  
Andreas Hartmann ◽  
Alexei R Khokhlov ◽  
Christine Kranz ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Detection Limit ◽  
Transition Metal ◽  
Prussian Blue ◽  
Electrochemical Deposition ◽  
Mixed Layer ◽  
Scanning Electrochemical Microscopy ◽  
The Stability ◽  
Mixed Layers ◽  
Electrochemical Microscopy

We report here a way for improving the stability of ultramicroelectrodes (UME) based on hexacyanoferrate-modified metals for the detection of hydrogen peroxide. The most stable sensors were obtained by electrochemical deposition of six layers of hexacyanoferrates (HCF), more specifically, an alternating pattern of three layers of Prussian Blue and three layers of Ni–HCF. The microelectrodes modified with mixed layers were continuously monitored in 1 mM hydrogen peroxide and proved to be stable for more than 5 h under these conditions. The mixed layer microelectrodes exhibited a stability which is five times as high as the stability of conventional Prussian Blue-modified UMEs. The sensitivity of the mixed layer sensor was 0.32 A·M−1·cm−2, and the detection limit was 10 µM. The mixed layer-based UMEs were used as sensors in scanning electrochemical microscopy (SECM) experiments for imaging of hydrogen peroxide evolution.

Hydrogen peroxide electrochemical synthesis on hybrid double-atom (Pd–Cu) doped N vacancy g-C3N4: a novel design strategy for electrocatalyst screening

2020 ◽  
Vol 8 (5) ◽  
pp. 2672-2683 ◽  
Author(s):  
Yongyong Cao ◽  
Chenxia Zhao ◽  
Qiaojun Fang ◽  
Xing Zhong ◽  
Guilin Zhuang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrochemical Synthesis ◽  
Oxidation Process ◽  
Design Strategy ◽  
Reduction Reaction ◽  
Novel Design ◽  
Electrochemical Oxygen

The electrochemical oxygen reduction reaction (ORR) to afford hydrogen peroxide (H2O2) provides an alternative to the traditional anthraquinone oxidation process.

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