Preparation of Ag@zeolitic imidazolate framework-67 at room temperature for electrochemical sensing of hydrogen peroxide

The Analyst ◽  
2019 ◽  
Vol 144 (2) ◽  
pp. 521-529 ◽  
Author(s):  
Yuhua Dong ◽  
Chengqian Duan ◽  
Qinglin Sheng ◽  
Jianbin Zheng
Keyword(s):  
Hydrogen Peroxide ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Room Temperature ◽  
Electrochemical Sensing ◽  
Carbon Electrode ◽  
Zeolitic Imidazolate Framework ◽  
Simple Method ◽  
Hydrogen Peroxide Sensor

In this work, a novel non-enzymatic hydrogen peroxide sensor, Ag@zeolitic imidazolate framework-67 (Ag@ZIF-67)/glassy carbon electrode (GCE), was fabricated by a simple method at room temperature.

Electrochemical hydrogen peroxide sensor based on a glassy carbon electrode modified with nanosheets of copper-doped copper(II) oxide

2015 ◽  
Vol 182 (7-8) ◽  
pp. 1543-1549 ◽  
Author(s):  
Haiyan Song ◽  
Chaohong Ma ◽  
Liyan You ◽  
Zhenyu Cheng ◽  
Xinhui Zhang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Hydrogen Peroxide Sensor

Electrochemical hydrogen peroxide sensor based on cobalt phthalocyanine captured in polyaniline film on a glassy carbon electrode

2012 ◽  
Vol 16 (04) ◽  
pp. 380-389 ◽  
Author(s):  
Berna Çeken ◽  
Mehmet Kandaz ◽  
Atıf Koca
Keyword(s):  
Hydrogen Peroxide ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Composite Electrode ◽  
Electrochemical Impedance ◽  
Pani Film ◽  
Cobalt Phthalocyanine ◽  
Carbon Electrode ◽  
Hydrogen Peroxide Sensor ◽  
Vis Spectroscopy

This work demonstrated preparation, characterization, and application of a cobalt phthalocyanine based enzymeless/mediatorless hydrogen peroxide sensor. The cobalt phthalocyanine (CoPc) was retained in polyaniline (PANI) film on a glassy carbon electrode during electrochemical polymerization of aniline and consequently a novel composite electrode (GCE/PANI/ CoPc ) for the electrochemical sensor application was constructed. The CoPc functionalized composite electrode, GCE/PANI/ CoPc , was evaluated by voltammetry, electrochemical impedance spectroscopy, and UV-vis spectroscopy. The results displayed retaining of the CoPc molecules in the PANI film on the GCE electrode. Presence of CoPc in PANI increased conductivity of the composite on the electrode. Sensing performance of the GCE/PANI/ CoPc composite electrode to H2O2 were evaluated in detail with respect to the selectivity, reproducibility, repeatability, stability, linear concentration range, and sensitivity with voltammetric and double potential step chronoamperometric techniques. The GCE/PANI/ CoPc composite electrode gives a linear range for H2O2 between 2 and 18 μM H2O2 with sensitivities of 1.55 A.M-1 during the cathodic SWV scan and with sensitivities of 4.01 A.M-1 during the anodic SWV scan. A direct application of the sensor was performed in a real working condition, for the detection of hydrogen peroxide produced from the reaction between the glucose and glucose oxidase enzyme.

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