Highly Sensitive Platinum-Black Coated Platinum Electrodes for Electrochemical Detection of Hydrogen Peroxide and Nitrite in Microchannel

2013 ◽  
Vol 25 (4) ◽  
pp. 895-902 ◽  
Author(s):  
Yun Li ◽  
Catherine Sella ◽  
Fredéric Lemaître ◽  
Manon Guille Collignon ◽  
Laurent Thouin ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Electrochemical Detection ◽  
Platinum Black ◽  
Platinum Electrodes ◽  
Highly Sensitive

MnO2 nanorods grown NGNF nanocomposites for the application of highly sensitive and selective electrochemical detection of hydrogen peroxide

2017 ◽  
Vol 46 ◽  
pp. 19-27 ◽  
Author(s):  
K. Ramachandran ◽  
Awan Zahoor ◽  
T. Raj Kumar ◽  
Kee Suk Nahm ◽  
A. Balasubramani ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Electrochemical Detection ◽  
Highly Sensitive

Graphene oxide-gold nanozyme for highly sensitive electrochemical detection of hydrogen peroxide

2018 ◽  
Vol 274 ◽  
pp. 201-209 ◽  
Author(s):  
Ga Hyun Jin ◽  
Euna Ko ◽  
Min Ki Kim ◽  
Van-Khue Tran ◽  
Seong Eun Son ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Graphene Oxide ◽  
Electrochemical Detection ◽  
Highly Sensitive

scholarly journals Electrochemical Detection of Adrenaline and Hydrogen Peroxide on Carbon Nanotube Electrodes

2021 ◽  
Author(s):  
Gaurang Khot ◽  
Mohsin Kaboli ◽  
Tansu Celikel ◽  
Neil Shirtcliffe
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Peroxide ◽  
Carbon Nanotube ◽  
Electrochemical Detection ◽  
Electrochemical Sensors ◽  
Carbon Electrodes ◽  
Cyclic Voltammetric ◽  
Highly Sensitive

Adrenaline and hydrogen peroxide have neuromodulatory functions in the brain.Considerable interest exists in developing electrochemical sensors that can detect their levels in vivo due to their important biochemical roles. Challenges associated with electrochemical detection of hydrogen peroxide and adrenaline are that the oxidation of these molecules usually requires highly oxidising potentials (beyond 1.4V vs Ag/AgCl) where electrode damage and biofouling are likely and the signals of adrenaline, hydrogen peroxide and adenosine overlap. To address these issues we fabricated pyrolysed carbon electrodes coated with oxidised carbon nanotubes (CNTs). Using these electrodes for fast-scan cyclic voltammetric (FSCV) measurements showed that the electrode offers reduced overpotentials compared with graphite and improved resistance to biofouling. The Adrenaline peak is reached at 0.75 V and reduced back at -0.2 V while hydrogen peroxide is detected at 0.85V on this electrode. The electrodes are highly sensitive with a sensitivity of16nA microM-1 for Adrenaline and 11nA microM-1 for hydrogen peroxide on an 80 micro m2 electrode. They are also suitable to distinguish between adrenaline, hydrogen peroxide and adenosine thus these probes can be used for multimodal detection of analytes.

Highly Sensitive Electrochemical Detection of Hydrogen Peroxide Based on Polyethyleneimine-Au Nanoparticles-Zinc Protoporphyrin

2019 ◽  
Vol 166 (8) ◽  
pp. B631-B636 ◽  
Author(s):  
Liying Zhao ◽  
Jinge Li ◽  
Xiangli Chen ◽  
Di Cheng ◽  
Jingyu Zhang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Electrochemical Detection ◽  
Au Nanoparticles ◽  
Zinc Protoporphyrin ◽  
Highly Sensitive

scholarly journals Electrochemical detection of adrenaline and hydrogen peroxide on carbon nanotube electrodes

2022 ◽  
pp. 1-7
Author(s):  
Gaurang Khot ◽  
Mohsen Kaboli ◽  
Tansu Celikel ◽  
Neil Shirtcliffe
Keyword(s):  
Hydrogen Peroxide ◽  
Electrochemical Detection ◽  
Electrode Materials ◽  
Electrochemical Sensors ◽  
Carbon Electrodes ◽  
Peroxide Oxidation ◽  
Cyclic Voltammetric ◽  
Highly Sensitive ◽  
The Brain

Adrenaline and hydrogen peroxide have neuromodulatory functions in the brain and peroxide is also formed during reaction of adrenaline. Considerable interest exists in developing electrochemical sensors that can detect their levels in vivo due to their important biochemical roles. Challenges associated with electrochemical detection of hydrogen peroxide and adrenaline are that the oxidation of these molecules usually requires highly oxidising potentials (beyond 1.4 V vs Ag/AgCl) where electrode damage and biofouling are likely and the signals of adrenaline, hydrogen peroxide and adenosine overlap on most electrode materials. To address these issues we fabricated pyrolysed carbon electrodes coated with oxidised carbon nanotubes (CNTs). Using these electrodes for fast-scan cyclic voltammetric (FSCV) measurements showed that the electrode offers reduced overpotentials compared with graphite and improved resistance to biofouling. Adrenaline oxidises on this electrode at 0.75(±0.1) V and reduces back at −0.2(±0.1) V while hydrogen peroxide oxidation is detected at 0.85(±0.1) V on this electrode. The electrodes are highly sensitive with a sensitivity of 16 nA µM−1 for Adrenaline and 11 nA µM−1 for hydrogen peroxide on an 80 µm2 electrode. They are also suitable to distinguish between adrenaline, hydrogen peroxide and adenosine thus these probes can be used for multimodal detection of analytes.

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