Synthesis, Optical, Photocatalytic and Electrochemical Properties of Cobalt Doped ZnS Nanoparticles
| Autor: | K. R. Sumadevi, P. Parameshwara Naik, Malathesh Pari, N. Ranjitha, R. S. Priya Rani, Prabhaker Walmik, G. Krishnamurthy, H. S. Bhojya Naik |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Asian Journal of Chemistry. 33:2446-2454 |
| ISSN: | 0975-427X 0970-7077 |
| DOI: | 10.14233/ajchem.2021.23403 |
| Popis: | Poly(vinyl pyrrolidone) capped and uncapped Co:ZnS nanoparticles have been synthesized by co-precipitation method. These synthesized nanoparticles were characterized using spectral techniques and the optical and photoluminescence properties of nanoparticles were also studied. Poly(vinyl pyrrolidone) capped nanoparticles has been studied for the electrochemical sensing of various biomolecules. The Co:ZnS modified glassy carbon electrode (GCE) proved to be effective nanoparticles composite electrode to detect biomolecules electrochemically with a wide linear detection range of 0.2 to 1.6 μmol/L, Also a low detection limit (LOD) of 0.06 μM/L and excellent sensitivity of 4.366 μA μM-1 has been obtained. It is observed that the particle size of nanoparticles is affected by the capping agent. It is therefore the modified electrode has become a good electrode material with a greater stability without leaching. The optical band gap was determined by UV-visible spectra and the value is found to be in the range of 3.75 to 4.00 eV. The photocatlytic activity on Eriochrome black T dye in the visible region using nanoparticles has been determined. It was found that the capped nanoparticles are more effective in photocatalytic degradation due to low energy consumption and safe recovery of it after catalytic performance from polluted water. |
| Databáze: | OpenAIRE |
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