Indian Journal of Science and Technology
Year: 2021, Volume: 14, Issue: 18, Pages: 1442-1451
S Saiganesh1, B Muni Sudhakar2, K Thyagarajan3*, G Narasimha4
1Department of Physics, JNTUA, Ananthapuramu, 515002, India
2Department of Physics, S V College of Engineering, Tirupati, 517507, India
3Department of Physics, JNTU College of Engineering, Pulivendula, 516390, India
4Department of Virology, Sri Venkateswara University, Tirupati, 517502, India
Email: [email protected]
Received Date:09 April 2020, Accepted Date:15 December 2020, Published Date:19 May 2021
Objectives: To study the eco-friendly green synthesis of neodymium doped nickel oxide nanoparticles and to study their structural, optical and antibacterial activities. Method: Sesbania grandiflora herb has been used to synthesize NiO nanoparticles. With the materials present in the plant extract, such as sugar, flavonoid, protein, enzyme, polymer, and organic acid, acting as the reducing agent the green approach takes charge in bio induction of metal ions into nanoparticles. Structural and Optical Properties of nanoparticles were studied by following XRD, SEM, EDAX, FTIR and UV-Vis-NIR (DRS). The antibacterial activity of the resultant neodymium (Nd3+) doped nickel oxide (NiO) was tested on Gram negative and Gram positive bacteria with suitable standard. Findings: From the XRD analysis, it is revealed that the size of the particles is in the order of 9.2 to 23.06 nm. JCPDS data confirmed that Nd3+ ion-doped NiO nanoparticles exhibit phases of (111), (200), (220), and (311). SEM with EDAX proved that existence of Nd3+ ion-doped NiO nanoparticles. Cubical and spherical shapes of the nanoclusters having a size of 20-40 nm are shown by SEM analysis. Most promising peaks at 420 cm-1 and 657 cm-1 associated to Ni-O vibration bond and Ni-O-H stretching bond were analyzed from FTIR graph of the sample before annealing while for the sample at 500oC shows the Ni-O vibration bond at 411cm-1. The direct band gap of Nd3+ ion-doped NiO nanoparticles calculated as 3.08 eV at the concentration of NiONdO3 mol%. By doping with Nd3+ ion, energy gap increases with doping concentration proved by UVDRS spectroscopy that confirms Quantum confinement. The eco-friendly synthesized nanoparticles exhibited good antibacterial activity against pathogenic bacterial strain is an indication of antibacterial efficiency of nanoparticles. Novelty: Eco-friendly synthesis of NiO nanoparticles and characterization and doped nanoparticles exhibited good antibacterial activity.
Keywords: Green synthesis; NiO particles; Characterization; Cubical; spherical shapes; Direct band gap semiconductors; NIR laser; Antibacterial activities
© 2021 Saiganesh et al.This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)
Subscribe now for latest articles and news.