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Beaula Ruby Kamalam M, Inbanathan SSR, Sethuraman K, Umar A, Algadi H, Ibrahim AA, Rahman QI, Garoufalis CS, Baskoutas S. Direct sunlight-driven enhanced photocatalytic performance of V 2O 5 nanorods/ graphene oxide nanocomposites for the degradation of Victoria blue dye. Environ Res 2021; 199:111369. [PMID: 34033833 DOI: 10.1016/j.envres.2021.111369] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 05/07/2021] [Accepted: 05/16/2021] [Indexed: 06/12/2023]
Abstract
Herein, we report the synthesis and characterizations of Vanadium pentoxide (V2O5) nanorods/graphene oxide (GO) nanocomposite as efficient direct solar light driven photocatalyst for the enhanced degradation of victoria blue (VB) dye. The nanocomposite was synthesized by sonochemical process and characterized using several analytical methods in order to study the structural, morphological, compositional, optical and photocatalytic properties. The X-ray diffraction studies confirmed the orthorhombic structure of V2O5 while the morphological examinations revealed the growth of V2O5 nanorods and 2D GO sheets. Interestingly, the UV studies ratify that the bandgap of the nanocomposite was reduced compared to pure GO and V2O5. Interestingly, the interaction of the V2O5 nanorods with the graphene oxide substrate and its effect on the electronic properties of the combined system, have been examined by means of theoretical calculations, based on the so called Geometry, Frequency, Noncovalent, eXtended Tight Binding (GFN-xTB) method. Studying the photocatalytic behavior of nanocomposite, we observe an almost complete degradation (97.95%) of Victoria Blue (VB) dye under direct sunlight illumination within just 90 min. The outstanding nanocomposite photocatalytic efficiency was due to the excellent transfer of interfacial charge and the suppressed recombination of charge-carrier. The kinetics of the degradation process was also analyzed by calculating the rate constant and half-life time. Finally, a possible mechanism has also been discussed for the degradation process of VB dye using nanocomposite under direct sunlight irradiation.
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Affiliation(s)
- M Beaula Ruby Kamalam
- Post Graduate and Research Department of Physics, The American College, Madurai, 625002, Tamil Nadu, India; School of Physics, Madurai Kamaraj University, Madurai, 625021, Tamil Nadu, India
| | - S S R Inbanathan
- Post Graduate and Research Department of Physics, The American College, Madurai, 625002, Tamil Nadu, India
| | - K Sethuraman
- School of Physics, Madurai Kamaraj University, Madurai, 625021, Tamil Nadu, India; Department of Materials Science, School of Technology, Central University of Tamilnadu, Thiruvarur, 610005, Tamil Nadu, India.
| | - Ahmad Umar
- Department of Chemistry, Faculty of Science and Arts, Najran University, Najran, 11001, Saudi Arabia; Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia.
| | - Hassan Algadi
- Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia; Department of Electrical Engineering, Faculty of Engineering, Najran University, P.O. Box 1988, Najran, 11001, Saudi Arabia
| | - Ahmed A Ibrahim
- Department of Chemistry, Faculty of Science and Arts, Najran University, Najran, 11001, Saudi Arabia; Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia
| | | | | | - Sotirios Baskoutas
- Department of Materials Science, University of Patras, 26504, Rio, Patras, Greece.
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