Lantana camara Linn leaf extract mediated green synthesis of gold nanoparticles and study of its catalytic activity

Shib Shankar Dash,Braja Gopal Bag,Poulami Hota

doi:10.1007/s13204-014-0323-4

Shib Shankar Dash, Braja Gopal Bag + Show 1 more

Open Access

https://doi.org/10.1007/s13204-014-0323-4

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Journal: Applied nanoscience	Publication Date: May 31, 2014
Citations: 35	License type: CC BY 4.0

Affiliation: Vidyasagar University

Abstract

A facile one-step green synthesis of stable gold nanoparticles (AuNPs) has been described using chloroauric acid (HAuCl4) and the leaf extract of Lantana camara Linn (Verbenaceae family) at room temperature. The leaf extract enriched in various types of plant secondary metabolites is highly efficient for the reduction of chloroaurate ions into metallic gold and stabilizes the synthesized AuNPs without any additional stabilizing or capping agents. Detailed characterizations of the synthesized gold nanoparticles were carried out by surface plasmon resonance spectroscopy, transmission electron microscopy, dynamic light scattering, Zeta potential, X-ray diffraction and Fourier transform-infrared spectroscopy studies. The synthesized AuNPs have been utilized as a catalyst for the sodium borohydride reduction of 4-nitrophenol to 4-aminophenol in water at room temperature under mild reaction condition. The kinetics of the reduction reaction has been studied spectrophotometrically.

Highlights

Creation of nanoscale objects having at least one of their dimensions in the size range of 1–100 nm and theirElectronic supplementary material The online version of this article contains supplementary material, which is available to authorized users.Appl Nanosci (2015) 5:343–350(Jain et al 2011)
The AuNPs were characterized by surface plasmon resonance (SPR) spectroscopy, high-resolution transmission electron microscopy (HRTEM), X-ray diffraction, energy dispersive X-ray (EDX) and Fourier transform-infrared spectroscopy (FTIR) studies
It occurred to us that the oxidizable phytochemicals present in the leaf extract of L. camara can be utilized for the reduction of chloroaurate ions having very high reduction potential to atomic gold

Summary

Introduction

Creation of nanoscale objects having at least one of their dimensions in the size range of 1–100 nm and theirElectronic supplementary material The online version of this article (doi:10.1007/s13204-014-0323-4) contains supplementary material, which is available to authorized users.Appl Nanosci (2015) 5:343–350(Jain et al 2011). Syntheses of AuNPs from the extracts of Acacia nilotica leaves (Majumdar and Bag 2013), Punica granatum juice (Dash and Bag 2014), Saraca indica bark (Dash et al 2014), Ananas comosus L. During our investigations on the utilization of triterpenoids (C30 s) as renewable functional nanoentities (Bag and Dash 2011; Bag and Majumdar 2012; Bag and Paul 2012; Bag et al 2012, 2013), it occurred to us that the medicinally important leaf extract of L. camara, rich in polyphenolic compounds, can be utilized for the synthesis of AuNPs from HAuCl4 (Mittal et al 2013). We report a very mild and environment friendly method for the synthesis of AuNPs from the leaf extract of L. camara without any additional capping or stabilizing agents. Catalytic application of the synthesized AuNPs has been demonstrated for the sodium borohydride reduction of 4-nitrophenol to 4-aminophenol, and the reduction kinetics have been investigated spectrophotometrically

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