A Nanocomposite Modified Electrode: Electrocatalytic Properties and Its Sensing Applications to Hydrogen Peroxide and Glucose

2010 ◽  
Vol 157 (3) ◽  
pp. F35 ◽  
Author(s):  
Feng Gao ◽  
Jun Yin ◽  
Zhen Yao ◽  
Maoguo Li ◽  
Lun Wang
Keyword(s):  
Hydrogen Peroxide ◽  
Modified Electrode ◽  
Electrocatalytic Properties ◽  
Sensing Applications

scholarly journals A Comparative Study on the Oxidation of Label-Free Silver Triangular Nanoplates by Peroxides: Main Effects and Sensing Applications

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4832
Author(s):  
Aleksei Furletov ◽  
Vladimir Apyari ◽  
Alexey Garshev ◽  
Stanislava Dmitrienko
Keyword(s):  
Hydrogen Peroxide ◽  
Spectral Characteristics ◽  
Inorganic Ions ◽  
Label Free ◽  
Local Surface Plasmon Resonance ◽  
Tert Butyl ◽  
Sensing Applications ◽  
Tert Butyl Hydroperoxide ◽  
Resonance Band ◽  
Butyl Peroxide

Nowadays, analytical systems based on silver triangular nanoplates (AgTNPs) have been shown as good prospects for chemical sensing. However, they still remain relatively poorly studied as colorimetric probes for sensing various classes of compounds. This study shows that these nanoparticles are capable of being oxidized by peroxides, including both hydrogen peroxide and its organic derivatives. The oxidation was found to result in a decrease in the AgTNPs’ local surface plasmon resonance band intensity at 620 nm. This was proposed for peroxide-sensitive spectrophotometric determination. Five peroxides differing in their structure and number of functional groups were tested. Three of them easily oxidized AgTNPs. The effects of a structure of analytes and main exterior factors on the oxidation are discussed. The detection limits of peroxides in the selected conditions increased in the series peracetic acid < hydrogen peroxide < tert-butyl hydroperoxide, coming to 0.08, 1.6 and 24 μmol L−1, respectively. tert-Butyl peroxybenzoate and di-tert-butyl peroxide were found to have no effect on the spectral characteristics of AgTNPs. By the example of hydrogen peroxide, it was found that the determination does not interfere with 100–4000-fold quantities of common inorganic ions. The proposed approach was successfully applied to the analysis of drugs, cosmetics and model mixtures.

scholarly journals Electrochemical Sensing of Ascorbic Acid, Hydrogen Peroxide and Glucose by Bimetallic (Fe, Ni)−CNTs Composite Modified Electrode

2019 ◽  
Vol 31 (5) ◽  
pp. 851-857 ◽  
Author(s):  
Sayed Tayyab Raza Naqvi ◽  
Bahareh Shirinfar ◽  
Dilshad Hussain ◽  
Saadat Majeed ◽  
Muhammad Naeem Ashiq ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Ascorbic Acid ◽  
Modified Electrode ◽  
Electrochemical Sensing

Enhanced Electrocatalysis for the Reduction of Hydrogen Peroxide at New Multiwall Carbon Nanotube Grafted Polydiphenylamine Modified Electrode

2006 ◽  
Vol 18 (9) ◽  
pp. 894-903 ◽  
Author(s):  
Padmanabhan Santhosh ◽  
Kalayil Manian Manesh ◽  
Kwang-Pill Lee ◽  
Anantha Iyengar Gopalan
Keyword(s):  
Hydrogen Peroxide ◽  
Carbon Nanotube ◽  
Modified Electrode ◽  
Multiwall Carbon Nanotube ◽  
Multiwall Carbon
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