scholarly journals Recent Progress of Single‐atom Catalysts in the Electrocatalytic Reduction of Oxygen to Hydrogen Peroxide

2020 ◽  
Vol 32 (12) ◽  
pp. 2591-2602
Author(s):  
Weiya Zhu ◽  
Shaowei Chen
Keyword(s):  
Hydrogen Peroxide ◽  
Recent Progress ◽  
Single Atom ◽  
Electrocatalytic Reduction

scholarly journals Iron-Imprinted Single-Atomic Site Catalyst-Based Nanoprobe for Detection of Hydrogen Peroxide in Living Cells

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Zhaoyuan Lyu ◽  
Shichao Ding ◽  
Maoyu Wang ◽  
Xiaoqing Pan ◽  
Zhenxing Feng ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Active Site ◽  
Single Atom ◽  
Site Structure ◽  
Atomic Site ◽  
Ion Imprinting ◽  
Active Site Structure ◽  
In Situ Detection ◽  
Colorimetric Biosensing

AbstractFe-based single-atomic site catalysts (SASCs), with the natural metalloproteases-like active site structure, have attracted widespread attention in biocatalysis and biosensing. Precisely, controlling the isolated single-atom Fe-N-C active site structure is crucial to improve the SASCs’ performance. In this work, we use a facile ion-imprinting method (IIM) to synthesize isolated Fe-N-C single-atomic site catalysts (IIM-Fe-SASC). With this method, the ion-imprinting process can precisely control ion at the atomic level and form numerous well-defined single-atomic Fe-N-C sites. The IIM-Fe-SASC shows better peroxidase-like activities than that of non-imprinted references. Due to its excellent properties, IIM-Fe-SASC is an ideal nanoprobe used in the colorimetric biosensing of hydrogen peroxide (H2O2). Using IIM-Fe-SASC as the nanoprobe, in situ detection of H2O2 generated from MDA-MB-231 cells has been successfully demonstrated with satisfactory sensitivity and specificity. This work opens a novel and easy route in designing advanced SASC and provides a sensitive tool for intracellular H2O2 detection.

Electrocatalytic reduction of hydrogen peroxide on a palladium-modified carbon paste electrode

1995 ◽  
Vol 7 (4) ◽  
pp. 340-345 ◽  
Author(s):  
Xiaohua Cai ◽  
Kurt Kalcher ◽  
Gottfried Kölbl ◽  
Christian Neuhold ◽  
Wolfgang Diewald ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Carbon Paste Electrode ◽  
Modified Carbon Paste Electrode ◽  
Electrocatalytic Reduction ◽  
Carbon Paste ◽  
Paste Electrode
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