An electrochemical biosensor for determination of hydrogen peroxide using nanocomposite of poly(methylene blue) and FAD hybrid film

2011 ◽  
Vol 157 (1) ◽  
pp. 202-210 ◽  
Author(s):  
Kuo-Chiang Lin ◽  
Chien-Yu Yin ◽  
Shen-Ming Chen
Keyword(s):  
Hydrogen Peroxide ◽  
Methylene Blue ◽  
Hybrid Film ◽  
Electrochemical Biosensor

A New Electrochemical Biosensor for Determination of Hydrogen Peroxide in Food Based on Well-Dispersive Gold Nanoparticles on Graphene Oxide

2011 ◽  
Vol 23 (8) ◽  
pp. 1821-1829 ◽  
Author(s):  
Bing Zhang ◽  
Yuling Cui ◽  
Huafeng Chen ◽  
Bingqian Liu ◽  
Guonan Chen ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Electrochemical Biosensor

scholarly journals New Methylene Blue Covalently Functionalized Graphene Oxide Nanocomposite as Interfacial Material for the Electroanalysis of Hydrogen Peroxide

2021 ◽  
Vol 9 ◽  
Author(s):  
Jifang Chen ◽  
Ziqing Gao ◽  
Ruonan Yang ◽  
Huiling Jiang ◽  
Lin Bai ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Methylene Blue ◽  
Graphene Oxide ◽  
Electrochemical Sensor ◽  
Limit Of Detection ◽  
Crosslinking Agent ◽  
Spectroscopic Techniques ◽  
Experimental Conditions ◽  
Functionalized Graphene Oxide

New methylene blue (NMB), a phenothiazine dye, was covalently bonded to graphene oxide (GO) using glutaraldehyde as a crosslinking agent, which was characterized by spectroscopic techniques and electrochemistry. The obtained GO–NMB nanocomposite was used as interface material to construct a novel electrochemical sensor for the determination of hydrogen peroxide (H2O2). The electrochemical sensor based on GO–NMB nanocomposite exhibited excellent electrocatalytic activity for the reduction of hydrogen peroxide (H2O2), which was also enhanced by GO within the GO–NMB nanocomposite. With the optimized experimental conditions, the developed sensor showed high sensitivity (79.4 μA mM−1 cm−2) for electrocatalytic determination of H2O2 at the applied potential of −0.50 V in the concentration range of 0.000333 to 2.28 mΜ. The low limit of detection (1.35 μM), good reproducibility, and high stability of the sensor suggests that the electrochemical sensor based on the GO–NMB nanocomposite possesses obvious advantages, which paves a new avenue to functionalize GO for obtaining electrode interface materials.

Cu-MOFs/Hemin：A bionic enzyme with excellent dispersity for the determination of hydrogen peroxide released from living cells

The Analyst ◽  
2021 ◽  
Author(s):  
Hong Cui ◽  
Shuaishuai Cui ◽  
Siyuan Zhang ◽  
Qiuju Tian ◽  
Yunfeng Liu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Aqueous Medium ◽  
Electrochemical Biosensor ◽  
Metal Organic Frameworks ◽  
Living Cells ◽  
Metal Organic ◽  
The Stability

The stability, repeatability and sensitivity of an electrochemical biosensor material are closely connected with the dispersibility of metal organic frameworks (MOFs) in aqueous medium. Herein, a nanocomposite based on Cu-MOFs/Hemin,...

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