scholarly journals Synthesis of material libraries using gas diffusion electrodes

2020 ◽  
Vol 8 (23) ◽  
pp. 11674-11686
Author(s):  
Rafael A. Prato M. ◽  
Vincent Van Vught ◽  
Kudakwashe Chayambuka ◽  
Guillermo Pozo ◽  
Sam Eggermont ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Layered Double Hydroxides ◽  
Gas Diffusion ◽  
Gas Diffusion Electrodes ◽  
Metal Precursors ◽  
Double Hydroxides

Gas-diffusion electrocrystallization (GDEx), driven by oxygen reduction, produces libraries of nanostructures, including birnessites, cubic spinels, tetragonal spinels, and layered double hydroxides, with Co2+ and Mn2+ as metal precursors.

scholarly journals A New Clark-Type Layered Double Hydroxides-Enzyme Biosensor for H2O2 Determination in Highly Diluted Real Matrices: Milk and Cosmetics

Processes ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 1878
Author(s):  
Mauro Tomassetti ◽  
Riccardo Pezzilli ◽  
Giuseppe Prestopino ◽  
Francesco Di Biagio ◽  
Corrado Di Natale ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Limit Of Detection ◽  
Gas Diffusion ◽  
Milk Samples ◽  
Low Concentrations ◽  
Enzyme Biosensor ◽  
H2o2 Determination ◽  
Double Hydroxides ◽  
Real Matrices

A new catalase amperometric biosensor for hydroperoxides detection has been built as part of research aimed at the development of biosensors based on layered double hydroxides (LDH) used as support for enzyme immobilization. The fabricated device differs from those developed so far, usually based on an LDH enzyme nanocomposite adsorbed on a glassy carbon (GC) electrode and cross-linked by glutaraldehyde, since it is based on an amperometric gas diffusion electrode (Clark type) instead of a GC electrode. The new biosensor, which still uses LDH synthesized by us and catalase enzyme, is robust and compact, shows a lower LOD (limit of detection) value and a linearity range shifted at lower concentrations than direct amperometric GC biosensor, but above all, it is not affected by turbidity or emulsions, or by the presence of possible soluble species, which are reduced to the cathode at the same redox potential. This made it possible to carry out accurate and efficient determination of H2O2 even in complex or cloudy real matrices, also containing very low concentrations of hydrogen peroxide, such as milk and cosmetic products, i.e., matrices that would have been impossible to analyze otherwise, using conventional biosensors based on a GC–LDH enzyme. An inaccuracy ≤7.7% for cosmetic samples and ≤8.0% for milk samples and a precision between 0.7 and 1.5 (as RSD%), according to cosmetic or milk samples analyzed, were achieved.

Gas-Diffusion Electrodes for Oxygen Reduction Loaded with Large Surface Area La1−xCaxMO3(M=Co,Mn)

1988 ◽  
Vol 17 (12) ◽  
pp. 1979-1982 ◽  
Author(s):  
Youichi Shimizu ◽  
Kenichi Uemura ◽  
Norio Miura ◽  
Noboru Yamazoe
Keyword(s):  
Oxygen Reduction ◽  
Surface Area ◽  
Gas Diffusion ◽  
Large Surface Area ◽  
Gas Diffusion Electrodes

scholarly journals Limiting Current of Oxygen Reduction on Gas‐Diffusion Electrodes for Phosphoric Acid Fuel Cells

1994 ◽  
Vol 141 (11) ◽  
pp. 3114-3119 ◽  
Author(s):  
Li Qingfeng ◽  
Xiao Gang ◽  
H. A. Hjuler ◽  
R. W. Berg ◽  
N. J. Bjerrum
Keyword(s):  
Fuel Cells ◽  
Phosphoric Acid ◽  
Oxygen Reduction ◽  
Gas Diffusion ◽  
Limiting Current ◽  
Gas Diffusion Electrodes ◽  
Phosphoric Acid Fuel Cells

scholarly journals Composition, valence and oxygen reduction reaction activity of Mn-based layered double hydroxides

2019 ◽  
Vol 7 (2) ◽  
pp. 147-153 ◽  
Author(s):  
Yu Iwai ◽  
Akira Miura ◽  
Nataly Carolina Rosero-Navarro ◽  
Mikio Higuchi ◽  
Kiyoharu Tadanaga
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Layered Double Hydroxides ◽  
Reduction Reaction ◽  
Oxygen Reduction Reaction Activity ◽  
Double Hydroxides
Sign in / Sign up

Export Citation Format

Share Document