Structural and Optical Properties of ZnO Nanorods Synthesized via Tulshi (Ocimum tenuiflorum) Extract: A Green Approach
| Authors | K. Barman1,2, P. Chakraborty2, P.K. Samanta3 |
| Affiliations |
1Department of Physics, Sri Ramkrishna Sarada Vidya Mahapitha, Hooghly-713102, West Bengal, India 2Department of Physics, Raiganj University, Uttar Dinajpur-733134, West Bengal, India 3Department of Physics, Prabhat Kumar College, Contai-721404, Purba Medinipur, West Bengal, India |
| Е-mail | pijush.samanta@gmail.com |
| Issue | Volume 18, Year 2026, Number 2 |
| Dates | Received 04 August 2025; revised manuscript received 19 April 2026; published online 29 April 2026 |
| Citation | K. Barman, P. Chakraborty, P.K. Samanta, J. Nano- Electron. Phys. 18 No 2, 02030 (2026) |
| DOI | https://doi.org/10.21272/jnep.18(2).02030 |
| PACS Number(s) | 81.16.Ta, 03.65.Ta, 78.55.Qr |
| Keywords | Zinc-oxide, Green-synthesis, Absorption (17) , Bandgap (5) , Quantum-confinement. |
| Annotation |
A simple wet-chemical method has been used to synthesized ZnO nanorods inspired from the green approach using Ocimum tenuiflorum extract. X-ray diffraction data revealed the formation of crystalline nanostructures with crystallite size ~ 18 nm. The nanorods are polycrystalline in nature and are attached together via electrostatic attraction between the charged facets of ZnO nanocrystals. Fourier transformed infrared spectra revealed the formation of Zn-O bond along with various aromatic bonds also due to the molecules of O.tenuiflorum extract. Strong UV absorption and emission was observed owing to the band edge transition of the direct band gap of 3.85 eV. Band gap enhancement is the evidence of occurrence of quantum confinement in the synthesized ZnO nanorods. The synthesized nanorods exhibit strong antimicrobial activity against E. Coli as found from the optical density measurement after bacterial incubation with the nanorods. |
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List of References |
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