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Vol. 34 No. 12 (2022): Vol 34 Issue 12, 2022

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Lead Oxide Nanodots Synthesized by Solvothermal and Microwave Assisted Method and its Comparative Characterization

https://doi.org/10.14233/ajchem.2022.24035
Mohd Kashif Aziz
Department of Chemistry, University of Allahabad, Prayagraj-211002, India
Abul Kalam
Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
Ghulam Mustafa
Department of Chemistry, University of Allahabad, Prayagraj-211002, India
Shekhar Srivastava
Department of Chemistry, University of Allahabad, Prayagraj-211002, India
Syed Kashif Ali
Department of Chemistry, Faculty of Science, Jazan University, P.O. Box 114, Jazan, Saudi Arabia

Corresponding Author(s) : Mohd Kashif Aziz

mohdkashifaziz@allduniv.ac.in

Asian Journal of Chemistry, Vol. 34 No. 12 (2022): Vol 34 Issue 12, 2022

Abstract

This study is focused on synthesis of lead oxide (PbO) nanodots (quantum dots) via two methods viz. microwave-assisted (B) and solvothermal method (A). The results of microwave-assisted method are slightly different in comparison to the solvothermal method. Several techniques, such as Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-Vis), powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and selective area electron diffraction (SAED) were used for characterizing PbO nanodots synthesized by both methods. The FTIR peak at 687 cm-1 indicated the formation of the Pb-O-Pb bond. The band gap, calculated with the help of UV data, was ~5.5 eV. The obtained PXRD pattern and miller indices suggested the formation of β-PbO and α-PbO nanoparticles with orthorhombic and tetragonal geometries. The crystallinity of PbO nanodots methods by A and B methods was 96% and 99%, respectively. The average crystallite size (for both samples synthesized by methods A and B) calculated by Debye-Scherrer’s equation was 42 and 38 nm, respectively. Sample A mostly contains α-type lead oxide nanodots, while sample B mainly contains mostly β-type lead oxide nanodots. The average size of nanodots observed from TEM images for samples A and B was 3.7 and 2.7 nm, respectively.

Keywords

Lead oxide Nanoparticles Microwave Crystallinity Nanodots Nanoplates
Kashif Aziz, M., Kalam, A., Mustafa, G., Srivastava, S., & Kashif Ali, S. (2022). Lead Oxide Nanodots Synthesized by Solvothermal and Microwave Assisted Method and its Comparative Characterization. Asian Journal of Chemistry, 34(12), 3293–3298. https://doi.org/10.14233/ajchem.2022.24035
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