EXPERIMENTAL AND COMPUTATIONAL CHARACTERIZATION OF SILVER NANOPARTICLES USING MATICO (Piper aduncum) LEAVES EXTRACT AS REDUCING AGENT
Journal Title: Periódico Tchê Química - Year 2017, Vol 14, Issue 27
Abstract
Silver nanoparticles are recognized for numerous physical, biological and pharmaceutical applications. In this study, silver nanoparticles were successfully synthesized by green chemistry alternative reduction method, using Matico (Piper aduncum) leaves extract. The characterization was performed through Ultraviolet/VisibleSpectroscopy to estimatethe particle size; morphology and elemental composition were detected by Scanning Electron Microscopy. Estimated radius was measured by Scanning Transmission Electron Microscopy. The interaction between Matico leaves extract with nanoparticles to determine potential reducing active ingredients was monitored by InfraredSpectroscopy. The reaction yield was determined by Flame Atomic Absorption Spectroscopy. The interaction of clusters of silver nanoparticles (3, 5 and 6 atoms) with quercetin (an active molecule of the Matico leaves), was studiedusing Density Functional Theory and Molecular Dynamics by Gaussian09 and Abalone programs. The particle size was 13.586.25nm. It was found that the nanoparticles are quasi-spherical with 7.2 % of elemental silver and a reaction yield of 96.68 %. The cluster of 6 silver atoms with quercetin was proven to be the most stable complex. Synthesized silver nanoparticles display stability greater than 120 days, confirming that Matico leaves extract is a viable and green reducing agent.Silver nanoparticles would have very good clearance properties because molecular dynamics demonstrated that over a certain period of time, the silver cluster got far away from the quercetin.
Authors and Affiliations
Lorena MENESES
Keywords
Related Articles
- EP ID EP252142
- DOI -
- Views 281
- Downloads 0
POTENTIAL OF NEAR INFRARED SPECTROSCOPY-NIR ALLIED THE MULTIVARIATE ANALYSIS FOR GEOGRAPHICAL DISCRIMINATION OF BURITI (MAURITIA FLEXUOSA L.) AMAZONIAN OIL
Pulp oils from buriti fruit (Mauritia Fleuxosa L.), from the Amazon region, were obtained from different locations of the state of Roraima - Brazil, for the application of Near Infrared Spectrometry with Fourier Transfor...
AUSTEMPERING HEAT TREATMENT STUDY OF CAST DUCTILE IRON: ANALYSIS OF MECHANICAL AND MICROSTRUCTURAL PROPERTIES, ACCORDING TO THE A897M STANDARD SPECIFICATIONS FOR AUSTEMPERED DUCTILE IRON CASTINGS
The objective of this work was to develop heat treatment parameters of an austempered cast iron alloy ASTM 897 / A 897M - 1400/1100/1, aiming at the production of a truck spring support. The austempered nodular cast iron...
STUDY ON METHODS OF DETERMINATION OF AN ECOLOGICAL FLOW FOR THE MANAGEMENT OF WATER RESOURCES OF THE RIVER BASIN ON MARACAÇUMÉ RIVER
The elaboration of a study on methods for the determination of ecological flow for the management of the water resources of the Maracaçumé River Basin is very important for the proposed use and conservation of these reso...
MEASUREMENT UNCERTAINTY EVALUATION OF BRINELL HARDNESS TEST: GUM AND MONTE CARLO METHOD
The Brinell hardness test is one of the most used mechanical tests in the industry to assure the quality of metallurgical processes. Based on the measured values, it is necessary to describe the measurement uncertainty v...
BIOTECHNOLOGICAL APPROACHES IN PROCESSING OF SECONDARY RAW MATERIALS OF MEAT INDUSTRY
The radical change in the quality of the processed meat raw materials, which does not meet the standards, calls for the necessity to apply biotechnology methods in order to improve the quality and obtain high nutritional...