Synthesis of Environment-friendly Manganese-doped Metal Oxide Nanoparticles for the Biosensor Applications
J. Environ. Nanotechnol., Volume 10, No 3 (2021) pp. 09-15
Abstract
The present work focuses on the synthesis of Manganese-doped Fe2O3 nanoparticles via an environment-friendly method that finds their suitability for biosensor applications using the extraction of Nyctanthes arbor-tristis seed for the first time. The synthesized Mn (~2, 3 & 5 wt. %) doped Fe2O3 were characterized by powder X-ray diffraction (XRD), Field emission Scanning electron microscopy (FE-SEM), Cyclic voltammeter (CV), Infrared and UV-Vis spectroscopic studies. The powder X-ray diffraction analysis exposed the phase formation and α-Fe2O3nanoparticles in the case of annealed sample. Also, interesting secondary phase formation was observed in the case of Mn (5 wt. %) doped samples. The optical properties of Mn (~2, 3 & 5 wt. %) doped Fe2O3 samples were determined by utilizing UV-Vis spectroscopic technique and the corresponding bandgap energy was found to be 5.52, 5.67 and 5.83 eV, respectively. The chemical bonds, as well as the functional groups in the compound, were confirmed by the analysis of the FT-IR spectrum. The morphology of the prepared samples was observed at the micro-level using FE-SEM analysis. A cyclic voltammeter was used to find the suit bio-sensorability of the prepared samples for proposed biosensor applications.
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