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

Manikandan, A.; Manikandan, E.; Meenatchi, B.; Vadivel, S.; Jaganathan, S.K.; Ladchumananandasivam, R.; Henini, M.; Maaza, M.; Aanand, Jagathrakshakan Sundeep


A. Manikandan

E. Manikandan

B. Meenatchi

S. Vadivel

S.K. Jaganathan

R. Ladchumananandasivam

M. Maaza

Jagathrakshakan Sundeep Aanand


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.


Manikandan, A., Manikandan, E., Meenatchi, B., Vadivel, S., Jaganathan, S., Ladchumananandasivam, R., …Aanand, J. S. (2017). Rare earth element (REE) lanthanum doped zinc oxide (La: ZnO) nanomaterials: synthesis structural optical and antibacterial studies. Journal of Alloys and Compounds, 723,

Journal Article Type Article
Acceptance Date Jun 30, 2017
Online Publication Date Jul 1, 2017
Publication Date Nov 5, 2017
Deposit Date Jul 11, 2017
Publicly Available Date Jul 11, 2017
Journal Journal of Alloys and Compounds
Print ISSN 0925-8388
Electronic ISSN 1873-4669
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 723
Keywords Chemical route; La-doped ZnO; Nanomaterials; Optical; Structural; Antibacterial activity
Public URL
Publisher URL


JALCOM-D-17-05553R1.pdf (1.9 Mb)

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