| Photoluminescence and photocatalytic studies of rice water and papaya fruit extract-encapsulated cadmium sulfide nanoparticles |
Srinivasa Goud Bandaru1,2
, Suresh Yathapu2, Annapurna Sathiraju3, Bhikshamaiah Ganghishetti4, Tarun Babu Mangalarapu5, A. K. Singh1,6 |
1Department of Physics, Government Degree College, Jangaon 506167, India
2Department of Physics, Osmania University, Hyderabad 500007, India
3Department of Physics , University College for Women, Osmania University, 500095 Hyderabad, India
4CVR College of Engineering, Vastunagar, Mangalpalli, R.R.District, Hyderabad 501510, India
5International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur PO, Telangana 500 005 Hyderabad, India
6Defence Metallurgical and Research Laboratory, Hyderabad, Telangana 500058, India |
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Received: May 6, 2022; Revised: August 24, 2022 Accepted: September 24, 2022. Published online: October 25, 2022. |
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| ABSTRACT |
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Natural extracts can act as potential sources for the synthesis of nanoparticles in non-hazardous ways. The stabilization of nanoparticles can be done by any sufficiently large, quasi-polar, organic molecule. In the present study, cadmium sulfide nanoparticles (CdSNPs) encapsulated by natural extract have been synthesized via green chemical reduction route that uses natural stabilizers such as rice water, papaya fruit extracts and precursors such as cadmium chloride, cadmium nitrate, and cadmium sulfate. Different experimental techniques such as X-ray Diffraction (XRD), UV Visible Absorption Spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Energy-Dispersive Spectroscopy (EDS), Small Angle X-ray Spectroscopy (SAXS), and Transmission Electron Microscopy (TEM) are used to confirm that the as-prepared samples contain cubic crystalline CdSNPs with average size less than 20 nm and a thin natural molecule layer developed on their surface. The luminescence properties of as-prepared CdSNPs are studied through photoluminescence measurements. The photoluminescence spectra of the CdSNPs have exhibited one broad peak along with shoulders on either side of it. Cadmium sulfide nanomaterials that belong to the II–VI group are known for their photocatalytic applications due to their efficient physical properties along with wide bandgap energy. Further, the as-prepared CdSNPs have exhibited their potentiality in degrading Methylene Blue (MB), and Rhodamine B (RhB) which can be attributed to their mixed phase. |
| Key words:
Green synthesis · Cadmium sulfide · Nanoparticles · Natural extracts · Methylene blue (MB) · Rhodamine B (RhB) · Photocatalysis · Photoluminescence |
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