Gnidia glauca flower extract mediated synthesis of gold nanoparticles and evaluation of its chemocatalytic potential

Journal of Nanobiotechnology

Research

Sangeeta Kale¹  Jayesh Bellare²  Vaishali Shinde³  Dilip D Dhavale³  Amit M Jabgunde³  Deepanjali D Gurav³  Rohini Kitture⁴  Karishma Pardesi⁵  Sougata Ghosh⁶  Balu A Chopade⁶  Mehul Ahire⁶  Sumersing Patil⁶ 

[1] Department of Applied Physics, Defense Institute of Advanced Technology, Girinagar, 411025, Pune, India;Department of Chemical Engineering, Indian Institute of Technology, Bombay, Powai, 400076, Mumbai, India;Department of Chemistry, Garware Research Centre, University of Pune, 411007, Pune, India;Department of Electronic Science, Fergusson College, 411004, Pune, India;Department of Microbiology, University of Pune, 411007, Pune, India;Institute of Bioinformatics and Biotechnology, University of Pune, 411007, Pune, India;

关键词: Gnidia glauca;    Gold nanoparticles;    UV-Visible spectroscopy;    Transmission electron microscopy;    High resolution transmission electron microscopy;    Elemental mapping;    Energy dispersive spectroscopy;    Dynamic light scattering;    X-ray diffraction;    Chemocatalysis;   

DOI  :  10.1186/1477-3155-10-17

 received in 2012-01-02, accepted in 2012-05-01,  发布年份 2012

来源: Springer

【 摘 要 】

BackgroundNovel approaches for synthesis of gold nanoparticles (AuNPs) are of utmost importance owing to its immense applications in diverse fields including catalysis, optics, medical diagnostics and therapeutics. We report on synthesis of AuNPs using Gnidia glauca flower extract (GGFE), its detailed characterization and evaluation of its chemocatalytic potential.ResultsSynthesis of AuNPs using GGFE was monitored by UV-Vis spectroscopy and was found to be rapid that completed within 20 min. The concentration of chloroauric acid and temperature was optimized to be 0.7 mM and 50°C respectively. Bioreduced nanoparticles varied in morphology from nanotriangles to nanohexagons majority being spherical. AuNPs were characterized employing transmission electron microscopy, high resolution transmission electron microscopy. Confirmation of elemental gold was carried out by elemental mapping in scanning transmission electron microscopic mode, energy dispersive spectroscopy and X-ray diffraction studies. Spherical particles of size ~10 nm were found in majority. However, particles of larger dimensions were in range between 50-150 nm. The bioreduced AuNPs exhibited remarkable catalytic properties in a reduction reaction of 4-nitrophenol to 4-aminophenol by NaBH4 in aqueous phase.ConclusionThe elaborate experimental evidences support that GGFE can provide an environmentally benign rapid route for synthesis of AuNPs that can be applied for various purposes. Biogenic AuNPs synthesized using GGFE exhibited excellent chemocatalytic potential.

【 授权许可】

Unknown   
© Ghosh et al; licensee BioMed Central Ltd. 2012. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.