Zinc ferrite (ZnFe2O4) magnetic nanoparticles (NPs) were important due to their biological applications. In this work, zinc ferrite nanoparticles were synthesised by green method using Aegle marmelos leaves extract antimicrobial activity and drug delivery were studied. The synthesized magnetic nanoparticles were characterized by powder x-ray diffraction method (XRD), Fourier transform infrared spectroscopy (FTIR), vibrating sample magnetometer (VSM) and scanning electron microscopy (FE-SEM). XRD pattern of the synthesised ferrite samples showed cubic structure and matched with JCPDS no: 82-1042. FTIR spectroscopy revealed the characteristic functional group of ferrite nanoparticles. Magnetic properties of synthesised ferrite nanoparticles were studied using VSM. Agglomerated and irregular shaped particles were noticed from SEM. The synthesized ZnFe2O4 nanoparticles released 95% of carfilzomib (cancer drug) drug in 360 min. Furthermore, antibacterial activity was studied by well diffusion method against Escherichia coli (17 nm), Pseudomonas aeruginosa (25 nm), and Staphylococcus aureus (22 nm) and Bacillus subtilis (23 nm). Higher zone of inhibition was noted against pseudomonas aeruginosa compared to other organisms. © 2018 IOP Publishing Ltd.

Sumathi S

Department of Chemistry

School of Advanced Sciences

Vellore Campus

Sriramulu M

Shukla D

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Materials Research Express

Nanocrystalline ZnFe2O4 samples were synthesized by both conventional combustion method (CCM) and microwave assisted combustion method (MCM) using Hibiscus rosa-sinensis plant extract for comparison purpose. The prepared ZnFe2O4 samples were characterized by X-ray diffraction (XRD), Rietveld analysis, Fourier transform-infrared spectrophotometer (FT-IR), high resolution scanning electron microscopy (HR-SEM), energy dispersive X-ray analysis (EDX), diffuse reflectance spectroscopy (DRS), photoluminescence (PL) spectroscopy, and vibrating sample magnetometer (VSM). The formation of single phase ZnFe2O4 was confirmed by XRD and FT-IR. The lattice parameter was calculated by Rietveld analysis. The change in the particle size ranges from 372.0 to 541.7 nm and 23.4 to 48.5 nm respectively for the conventional and microwave methods and has been clearly shown by HRSEM. UV-visible diffuse reflectance spectroscopy is used to measure the band gaps of ZnFe2O4, which is about 2.1 eV. Single phase ZnFe2O4 emits the photoluminescence bands at 486, 530, 542, and 566 nm. The magnetic properties of the synthesized ZnFe2O4 nanoparticles were investigated by VSM studies and the hysteresis loops were studied at room temperature. The saturation magnetization (Ms) of ZnFe2O4-CCM (63.61 emu/g) is lesser than that of ZnFe2O4-MCM (255.7 emu/g). ZnFe2O4 nanoparticles prepared by the microwave assisted combustion method were found to have higher surface area and lower crystallite size than ZnFe2O4 nanoparticles prepared by the conventional combustion method. © 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Ceramics International

Studies on the microwave assisted and conventional combustion synthesis of Hibiscus rosa-sinensis plant extract based ZnFe2O4 nanoparticles and their optical and magnetic properties

Acta Tropica

In-vitro anti-inflammatory and mosquito larvicidal efficacy of nickel nanoparticles phytofabricated from aqueous leaf extracts of Aegle marmelos Correa

Magnesium oxide (MgO) was synthesised by a simple microwave-assisted combustion route without using any template, catalyst or surfactant. For the purpose of comparison, it was also prepared using conventional method. The as-synthesized MgO was characterized by powder X-ray diffraction (XRD), Fourier Transform infrared spectra (FT-IR), high resolution scanning electron microscopy (HR-SEM), transmission electron microscopy (TEM), Energy Dispersive X-ray analysis (EDX), diffuse reflectance spectroscopy (DRS) and Photoluminescence (PL) spectroscopy. The XRD results confirmed the formation of cubic phase MgO. FT-IR was used to investigate the adsorption of water and CO2 on MgO surface and confirm the formation of Mg-O phase. The formation of MgO micro cubes structures was confirmed by HR-SEM. The formation of MgO nanosheets was confirmed by HR-SEM and TEM and their possible formation mechanisms were also proposed. The optical absorption and photoluminescence emissions were determined by DRS and PL spectra respectively. An attempt has been made to compare the lattice parameter and the PL intensity. © 2011 Elsevier B.V.

Journal of Alloys and Compounds

Comparative study of microwave and conventional methods for the preparation and optical properties of novel MgO-micro and nano-structures

Journal of Physics and Chemistry of Solids

Structural, magnetic, optical, dielectric, electrical and modulus spectroscopic characteristics of ZnFe 2 O 4 spinel ferrite nanoparticles synthesized via honey-mediated sol-gel combustion method

Materials Research

Potency of ZnFe2O4 Nanoparticles as Corrosion Inhibitor for Stainless Steel; the Pigment Extract Study

Aegle marmelos leaves extract mediated synthesis of zinc ferrite: Antibacterial activity and drug delivery

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ISSN	20531591
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