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Sarngan PP, Lakshmanan A, Dutta A, Sarkar D. Understanding the effect of polymer concentrations on the phase formation and activity of electrospun nanofibrous photocatalyst. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Thakur N, Thakur N, Bhullar V, Sharma S, Mahajan A, Kumar K, Sharma DP, Pathak D. TiO2 nanofibers fabricated by electrospinning technique and degradation of MO dye under UV light. Z KRIST-CRYST MATER 2021. [DOI: 10.1515/zkri-2021-2025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Titanium dioxide (TiO2) nanofibers were synthesized by electrospinning to optimize the photocatalytic action efficiency. The synthesis of the fibers was carried out at four different wt% concentrations: 8, 9, 10 & 11% of polymer polyvinylpyrrolidone (PVP). The TiO2 fibers were further calcined at 700 °C to get powder form. The uncalcinated and calcined TiO2 nanofibers were characterized by using X-Ray diffraction (XRD), Raman spectroscopy, Scanning electron microscopy (SEM) and UV-Visible spectroscopy. Raman spectroscopy confirmed the rutile phase of the calcined TiO2nanofibers in powder form with a crystallite size of 34–38 nm. The surface morphology of the uncalcinated and calcined TiO2 nanofibers was examined by SEM and the fiber diameter found to be 360–540 nm. The optical bandgap of the calcined TiO2 nanofibers was found in the range of 3.29–3.24 eV. The photocatalytic activity of the TiO2 nanofibers as examined for uncalcinated and calcined nanofibers, methyl orange (MO) dye degraded up to 98 and 78%, respectively in 180 min under the exposure of UV light. Uncalcinated TiO2 nanofibers were found more suitable for degradation of MO dye as compared to calcined nanofibers.
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Affiliation(s)
- Naveen Thakur
- Department of Physics , Career Point University , Hamirpur , HP , India
| | - Nikesh Thakur
- Department of Physics , Career Point University , Hamirpur , HP , India
| | - Viplove Bhullar
- Department of Physics , Guru Nanak Dev University , Amritsar , Punjab , India
| | - Saurabh Sharma
- Department of Chemistry , Career Point University , Hamirpur , HP , India
| | - Aman Mahajan
- Department of Physics , Guru Nanak Dev University , Amritsar , Punjab , India
| | - Kuldeep Kumar
- Department of Chemistry , Career Point University , Hamirpur , HP , India
| | - Davinder Pal Sharma
- Department of Physics , University of the West Indies , Trinidad , West Indies
| | - Dinesh Pathak
- School of Physics and Materials Science , Shoolini University of Biotechnology & Management Sciences , Bajhol , Solan 173212 , HP , India
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