International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 3 | Mar -2017
www.irjet.net
e-ISSN: 2395 -0056 p-ISSN: 2395-0072
Green Synthesis of TiO2 Nanoparticle Using Moringa Oleifera Leaf Extract Vivek Patidar1, Preeti Jain2 1Department 2Head
of Nanotechnology, Medicaps Institute of Science & Technology, Madhya Pradesh, India,
of Department of Chemistry, Medicaps Institute of Science & Technology, Madhya Pradesh, India,
---------------------------------------------------------------------------------------------------------------------------Abstract: The present work describes synthesis and characterization of Titanium dioxide (TiO2) nanoparticles. TiO2 nanoparticles prepared by eco-friendly green synthesis method using Moringa oleifera leaves extract. The synthesized TiO2 nanoparticles were characterized by X-ray diffraction (XRD). Anatase phase TiO2 nanoparticles with mean crystalline size 12.22 nm and Band gap of 3.9 eV was obtained by UV-Visible spectroscopy. Keywords: TiO2, XRD, Moringa oleifera, Band gap, Crystalline size.
1. INTRODUCTION Nanotechnology is a branch of science which deals with matter having at least one dimension sized from 1-100 nm. Nanomaterials are classified into organic and inorganic material. The synthesis of inorganic metal oxide nanoparticles has attracted considerable attention in physical, chemical, biological, medical, optical, mechanical and engineering sciences where novel techniques are being developed to probe and manipulate single atom and molecules [5]. Metal and metal oxide nanoparticles have high surface to volume ratio which is responsible for their fascinating properties such as antimicrobial, magnetic, electronic and catalytic activity. Generally properties of nanoparticles depend on size, shape, composition, morphology and crystalline phase. Among the various metal oxide nanoparticles, TiO2 nanoparticles have wide applications in air and water purification, Dye sensitized solar cell (DSSC) due to their potential oxidation strength, high photo stability and non-toxicity. Traditionally metal oxide nanoparticles were synthesized by various physical and chemical methods. Some commonly used synthetic methods are non-sputtering, Solvothermal, reduction, sol-gel technique and electrochemical technique. But these methods are costly, toxic, high pressure, high energy requirement and potentially hazardous [2]. Hence developing of reliable
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biosynthetic and environment friendly approach has added much importance because of its eco-friendly products, biocompatibility and economic viability in the long run and also to avoid adverse effects during their application especially in medical field. Biosynthesis of nanoparticles is a bottom up approach where the main reaction occurring is reduction/oxidation. The plant phytochemicals with antioxidant or reducing properties are usually responsible for the preparation of metal and metal oxide nanoparticles [4]. The three ecofriendly and green chemistry perspective for the nanoparticle synthesis are the choice of the solvent medium, reducing agent and non-toxic material for the stabilization of nanoparticles. Recently nanoparticle synthesis were achieved using plant extract such as azadirachta indica, camellia sinensis, Nyctanthes arbor-tristis, coriandrum, nelumbo nucifera, ocimum sanctum and several others which is compatible with the green chemistry principles. Among the various biosynthetic approaches, the use of plant extract has advantages such as easily available, safe to handle and possess a broad viability of metabolites. The main phytochemicals responsible for the synthesis of nanoparticles are terpenoids, flavones, ketones, aldehydes, amides [1]. In this paper we have reported green synthesis using Moringa oleifera leaves. Moringa has chosen because of its antibacterial, anti-septic, antifungal and antiinflammatory activities.
2. EXPERIMENT DETAILS The healthy leaves of Moringa oleifera were collected from Agar District, Madhya Pradesh, India. The collected leaves were washed to remove dust. Leaves were shade dried at room temperature for about 7 days in normal atmosphere. Dried leaves were cut into fine pieces, grinded to get the finest powder. Ten gram of the dried leaves were mixed with 100 mL of ethanol and extracted under reflux condition at 50oC. After one hour, the ethanolic leaf extract
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