Photocatalytic Activity of Biosynthesized Silver Nanoparticle from Leaf Extract of Justicia Adhatoda

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Mechanics, Materials Science & Engineering, April 2017 – ISSN 2412-5954

Photocatalytic Activity of Biosynthesized Silver Nanoparticle from Leaf Extract of Justicia Adhatoda17 Latha D.1, C. Arulvasu2, P. Prabu2, V. Narayanan3 1 – Department of Inorganic Chemistry, University of Madras, Guindy campus, Chennai, India 2 – Department of Zoology, University of Madras, Guindy campus, Chennai, Tamil nadu, India 3 – Department of Zoology, Pachaiyappa’s college for men, Kanchipuram Tamil nadu, India DOI 10.2412/mmse.81.72.41 provided by Seo4U.link

Keywords: green synthesis, justicia adhatoda, leaf extract, silver nanoparticle.

ABSTRACT. In the present study, we investigate synthesis of silver nanoparticles from leaf extract of Justicia adhatoda. The synthesized silver nanoparticles showed the Surface Plasmon Resonance peak at 425 nm. The XRD analyzed intense peaks corresponding to (111), (200), (220) and (311) bragg’s reflection based on the face centered cubic structure of silver nanomaterial. In addition, spherical shape topography of nanoparticle was observed by HRSEM and EDAX indicates the presence of silver. Further, biogenic silver nanoparticles are proved its efficient photocatalytic activity against methyl orange dye.

Introduction. Nanoparticles are extremely small in size and high surface to volume ratio, which alter their chemical and physical properties compared to bulk of the same chemical composition [1]. Owing to these beneficial properties, nanomaterial have potential applications in drug delivery, biomedical, electronics, catalysis, photonics, chemical sensing and imaging optics [2]. Various techniques are available to synthesis of nanoparticles like as physical, chemical and biological methods. In green approach, the rate of formation of metal nanoparticles has been faster and eco-friendly compared with other methods [3]. The medicinal plant of J. adhatoda contain bioactive compounds, such as essential oil, quinazoline and alkaloids etc are used for cold and cough etc[4]. Especially, several literature surveys are documented to synthesize of nanoparticles from various parts of plant, Leaf extract of Albizia adianthifolia and which is used for A549 lung cell line activity [5].Gold nanoparticles were synthesized using Acacia nilotica (Babool) leaf extract exhibited remarkable study of its catalytic properties in a reduction reaction. Synthetic organic dyes are widely used in the textile industry. The removal of such kind of non-biodegradable dyes make crucial ecological problem. Numerous techniques are available to remove such kind of dyes, but in recent scenario metal nanoparticle were used to recover this problem. Beside, this work describes biosynthesized silver nanoparticle are treated to degrade the methyl orange by visible illumination. Materials and methods Synthesis of silver nanoparticles. The J.adhatoda plant is collected from local area at Theni district, Tamilnadu. Approximately weighed 10 g of leaf powder are added with 100 ml of double distilled water and boiled it for 20-25 min further centrifuged at 5000 rpm for 15min then collect the supernatant extract. One ml of aqueous extract was poured into 9 ml of 1×10−3M silver nitrate solution and incubates for 25 min, color change was monitored visually (Fig.1). Characterization of nanoparticles. The bioreduction of Ag+ ions was monitored by using spectra of synthesized silver nanoparticle were recorded by UV-visible spectrophotometer (Perkin-Elmer 17

© 2017 The Authors. Published by Magnolithe GmbH. This is an open access article under the CC BY-NC-ND license http://creativecommons.org/licenses/by-nc-nd/4.0/

MMSE Journal. Open Access www.mmse.xyz 75


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