Rare earth element (REE) lanthanum doped zinc oxide (La: ZnO) nanomaterials: synthesis structural optical and antibacterial studies

Manikandan, A. and Manikandan, E. and Meenatchi, B. and Vadivel, S. and Jaganathan, S.K. and Ladchumananandasivam, R. and Henini, M. and Maaza, M. and Aanand, Jagathrakshakan Sundeep (2017) Rare earth element (REE) lanthanum doped zinc oxide (La: ZnO) nanomaterials: synthesis structural optical and antibacterial studies. Journal of Alloys and Compounds, 723 . pp. 1155-1161. ISSN 1873-4669

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Abstract

Lanthanum (La) doped zinc oxide (ZnO) nanomaterials (LaxZn1-xO, x = 0.0, 0.03, 0.05, 0.07 M) were synthesized via co-precipitation method using zinc acetate, lanthanum nitrate as precursors, octylamine as capping and reducing agent. The structures, morphologies, optical activity and antibacterial properties of LaxZn1-xO were investigated by powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, High resolution scanning electron microscopy (HR-SEM), Energy dispersive X-ray (EDX), UV–Visible, Photoluminescence (PL) spectroscopy. The antibacterial activities of LaxZn1-xO were tested by modified disc diffusion method. The XRD results showed that the La3+ ions were successfully incorporated into the ZnO host, and the products were well-crystalline. The average size of undoped and doped La-doped ZnO was found to be in the ranges from 15.64 to 10.18 nm. In addition, the sphere-like nanoparticles morphology of LaxZn1-xO was confirmed by HR-SEM images. The band gap of La-doped ZnO nanoparticles were varied with the La3+ ions doping concentration. In addition, increasing the doping concentration of La3+ ions in ZnO increases the defects in ZnO lattice and hence resulting red-shift in UV emission, which indicate the presence of narrow band-gap in doped nanoparticles.

Item Type: Article
Keywords: Chemical route; La-doped ZnO; Nanomaterials; Optical; Structural; Antibacterial activity
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: 10.1016/j.jallcom.2017.06.336
Depositing User: Henini, Mohamed
Date Deposited: 11 Jul 2017 13:35
Last Modified: 12 Jul 2017 06:16
URI: http://eprints.nottingham.ac.uk/id/eprint/44066

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