In Situ Detection of Hydrogen Peroxide in PEM Fuel Cells

2005 ◽  
Vol 152 (6) ◽  
pp. A1165 ◽  
Author(s):  
Wen Liu ◽  
David Zuckerbrod
Keyword(s):  
Hydrogen Peroxide ◽  
Fuel Cells ◽  
Pem Fuel Cells ◽  
In Situ Detection

In Situ Detection of Reactive Oxygen Species in PEM Fuel Cells

2019 ◽  
Vol 25 (1) ◽  
pp. 443-451 ◽  
Author(s):  
Panagiotis Trogadas ◽  
Vijay Ramani
Keyword(s):  
Reactive Oxygen Species ◽  
Fuel Cells ◽  
Reactive Oxygen ◽  
Pem Fuel Cells ◽  
Oxygen Species ◽  
In Situ Detection

A Scaling Method for Correlating Ex Situ and In Situ Measurements in PEM Fuel Cells and Electrolyzer

2018 ◽  
Vol 165 (10) ◽  
pp. F883-F890
Author(s):  
Hyun-Seok Cho ◽  
Won-Chul Cho ◽  
J. W. Van Zee ◽  
Chang-Hee Kim
Keyword(s):  
Fuel Cells ◽  
Pem Fuel Cells ◽  
In Situ Measurements ◽  
Ex Situ ◽  
Scaling Method

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.

Chemical Interactions in Ionomers and Ionomer Membranes Containing Metal particles and Ions

1999 ◽  
Vol 575 ◽  
Author(s):  
William M. Risen
Keyword(s):  
Fuel Cells ◽  
Metal Ions ◽  
Small Molecules ◽  
Distinct Species ◽  
Pem Fuel Cells ◽  
Metal Particles ◽  
Metal Carbonyls ◽  
Ionomer Membranes ◽  
Low Temperature Fuel Cells

ABSTRACTIonomer membranes are employed in PEM fuel cells as the proton conducting element, but they also hold potential for catalytic applications in both hydrogen based and other low temperature fuel cells. In these applications the reactions of H2, CO, 02, H20 and other small molecules with metal-based catalysts are important to consider. Reactions of these species with perfluorocarbonsulfonic acid based ionomers (PFSA), of which Nafionsa are prototypical, containing Rh, Ru, Pt and other metal ions and particles are shown. Metal carbonyls form with metal ions that have been reduced in situ to reduced valence ions or to metal particles, by the combination of CO and H2O or with H2 directly. Metal nitrogen complexes also can be formed. In addition, the interactions of dissimilar metal ions leads to distinct species with NO or CO, for example, that are different from the products with either ion separately.

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