| Autor: |
Manibalan, Gunasekaran, Murugadoss, Govindhasamy, Marimuthu, Rajendiran, Rajabathar, Jothi Ramalingam, Kumar, Manavalan Rajesh |
| Předmět: |
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| Zdroj: |
Journal of Materials Science: Materials in Electronics; Mar2022, Vol. 33 Issue 9, p6592-6602, 11p |
| Abstrakt: |
In this present research, heterostructure NiO–SnO2 nanocomposite modified electrode was developed to determine l-cysteine molecule. The well-crystalline NiO–SnO2 nanocomposite was synthesized via a facile chemical precipitation route. The structural, morphological, optical and chemical composition were studied using various characterization techniques such as XRD, FT-IR, BET, UV–Visible, FE-SEM, HR-TEM and XPS. For the first time, cyclic voltammetry and amperometry were investigated to study the electro-oxidation of l-cysteine using the newly developed heterostructure NiO–SnO2 nanocomposite. Enhanced electro-catalytic performance of NiO–SnO2 modified electrode was achieved by synergistic effect between the NiO and SnO2 nanoparticles in the heterostrostrucutre composite. The sensitivity was found to be 18.77 µA cm−2 mM−1 corresponding to linear range from 0.01 × 10−3 to 6 × 10−3 M with limit of detection to be 0.01 µM. The excellent selectivity of the developed NiO–SnO2/GCE modify electrode demonstrated that it can be used in real application for sensing bio molecules. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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