Bio-Synthesis of Gold Nanoparticles Through Bioreduction using the Aqueous Extract of Muntingia Calabura L. LEAF

Abstract

One of the plants with many functions as tradisional drug is Muntingia calabura L. leaves. It caused the leaves has high content of tannins, saponins and flavonoids. The presence of these compounds is great potential as bioreductor to produce gold nanoparticles (AuNPs). In this study has been done biosynthesis and characterization of AuNPs using the aqueus extract of Muntingia calabura L. leaves. The AuNPs obtained were characterized by UV-Visible spectra, Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD). Based on the results of the bioreduction process of HAuCl 4 into AuNPs can be known that the AuNPs are successfully produced with optimum time 5 hours. Surface Plasmon resonance synthesis of AuNPs was done at a wavelength of 543.4 nm. At wavelength 660 nm is known as Longitudinal Plasma Resonance characteristic of one of AuNPs crystal form that is Au-nanorod, triangular or hexagonal. The IR band analysis shows that there are three functional groups that play a role in bioreduction process of gold nanoparticle formation are C=O, C-N and -OH group. XRD difractogram showed that AuNPs is formed at 2θ = 37,82 o (1 1 1), 44.05 o (2 0 0), 64.43 o (2 2 0) and 77.55 o (3 1 1). The average crystal size using XRD analysis and PSA (Particles Size Analyzer) test are 36.93 nm and 78.2 nm respectively. The AuNPs crystals are mostly oriented (3 1 1) with an average crystal lattice length of 0.4 nm.

Green synthesis and characterization of Ag nanoparticles using fresh and dry Portulaca Oleracea leaf extracts: Enhancing light reflectivity properties of ITO glass

“…extract at room temperature. The lonely band at 2358 cm −1 , only appeared using fresh P. oleracea L. leaf extract, is possibly resulting from the distortion vibration C─H delimited in the acetyl collection [97]. The peaks at 1655 cm −1 , using fresh P. oleracea L. leaf extract, and 1648 cm −1 , using dry P. oleracea L. leaf extract, match up with the N─H bend primary amines.…”

<i>In Vitro</i> Studies on Antioxidant Potential of Apple (<i>Malus domestica</i>) Fructus Extract Nanoparticle

“…The velocity of the particles in the medium then coincides with the particle size of the silver nanoparticles. The laser beam illuminated into the sample will experience intensity fluctuations due to particle light scattering 20 . In the present study, apple extract nanoparticles have an average particle size of 562.3 nm with three repetitions (Table 1).…”