Electrochemical sensors for Tetracycline antibiotics detection based on carbon electrode materials modified by biological and chemical compounds: A review

Author(s):  
Lina Hermouche ◽  
Mohamed Bendany ◽  
Khaoula Abbi ◽  
Youssra El Hamdouni ◽  
Najoua Labjar ◽  
...  

Linalool is a very important flavouring compound found in plants which is used in food and beverages. Linalool has been traditionally detected by analytical instruments such as gas chromatography (GC) coupled with mass spectroscopy(MS) which are not suitable for routine tests. For fast and low cost detection of chemical compounds electrochemial sensors are most suitable. Screen printed carbon electrode (SPCE) is one of the most popular and low cost device used for detection of chemical compounds. In this article we present the detection of linalool using a low cost preannodized commercial screen printed carbon electrode (SPCE). Traditionally electrochemical sensors are used in two terminal mode, however three terminal analysis of electrochemical sensors are found to be more rationale and accurate. In this paper we have analyzed detection of linalool by an advanced three terminal analysis. First we have performed cyclic voltammetry(CV) of the SPCE which showed clear oxidation peaks at different concentration of linalool. The input-output data of the CV has been used for analysis of the impedance of the SPCE.The impedance model of the SPCE was estimated by autoregressive moving average with exogenous inputs(ARMAX) modelling technique using the CV data. The three terminal impedance fitting revealed the values of electrical parameters and the parasitic elements at different linalool concentration. The stability limits of the SPCE was also determined from the pole-zero and Nyquist plots of the estimated models. Impedance behaviour to frequency of the SPCE was further analyzed by impedance plot( 𝒁 vs −𝒁 ′ ) from which we are able to relate the CV scan rate to the impedance of the SPCE. Finally the sensitivity and repeatability of the SPCE was determined using a measurement circuit.


2016 ◽  
Vol 8 (3) ◽  
pp. 03017-1-03017-7 ◽  
Author(s):  
I. F. Myronyuk ◽  
◽  
V. I. Mandzyuk ◽  
V. M. Sachko ◽  
R. P. Lisovsky ◽  
...  

2021 ◽  
Author(s):  
Manjula Natesan ◽  
Shenming Chen

We demonstrated the simple and more accurate electrochemical sensor for isoprenaline (ISPT) analysis in pharmaceutical substances based on manganese cobalt oxide (MnCo2O4) modified with glassy carbon electrode (MCO/GCE). The nanomaterial...


Nanoscale ◽  
2021 ◽  
Author(s):  
Chenyang Zhao ◽  
Chengyao Zhao ◽  
Qi Liu ◽  
Xiaohui Liu ◽  
Xiaotong Lu ◽  
...  

Small size effect could be conducive to enhancing the electrochemical performance, while the mechanism by which they also increase the capacitance for carbon electrode materials has not been established. Here,...


Author(s):  
U. Guth ◽  
J. Zosel ◽  
J. Riedel ◽  
N. Tran ◽  
M. Berthold ◽  
...  

2015 ◽  
Vol 3 (30) ◽  
pp. 15650-15660 ◽  
Author(s):  
Jagruti S. Suroshe ◽  
Shivram S. Garje

Synthesis, characterization of functionalized carbon nanotube/ZnO composites by solvothermal decomposition of a single source precursor and their use as electrode materials for supercapacitors with good reversible charge/discharge ability and cycle stability.


2010 ◽  
Vol 123-125 ◽  
pp. 1099-1102
Author(s):  
Ki Seok Kim ◽  
Soo Jin Park

Recently core/shell nanostructures including nanotubes, nanowires, and nanofibers have a considerable attension because multiple or enhanced functionality can be obtained by the synergistic effect of different materials in the formation of a core/shell structure. In this work, porous carbon/carbon core/shell carbon electrode (P-C/C-CE) composed of core graphene and disordered shells were prepared to obtain a new type of carbon electrode materials. The disordered carbon shells were prepared by coating of polyaniline onto the graphene by in-situ polymerization in the presence of nano-sized silica and subsequent carbonization at 850°C. After carbonization, P-C/C-CE showed the hollow structure and crystallinity. In addition, P-C/C-CE exhibited superior electrochemical performance compared to graphene and graphene/PANI composites, which was attributed to the high surface area of P-C/C-CE and the presence of nitrogen groups formed onto carbon electrode after the carbonization of shell polyaniline.


2016 ◽  
Vol 52 (2) ◽  
pp. 760-769 ◽  
Author(s):  
Xingyu Meng ◽  
Qing Cao ◽  
Li’e Jin ◽  
Xiaohua Zhang ◽  
Shilei Gong ◽  
...  

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