Journal ArticleDOI
Characterization and catalytic activity of gold nanoparticles synthesized using ayurvedic arishtams.
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TLDR
The synthesized gold nanoparticles show good catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol by excess NaBH(4) and are found to exhibit size dependent catalytic property, the smaller nanoparticles showing faster activity.About:
This article is published in Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy.The article was published on 2012-10-01. It has received 73 citations till now. The article focuses on the topics: Colloidal gold & Nanoparticle.read more
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Bioavailability enhancers of herbal origin: An overview
Kritika Kesarwani,Rajiv Gupta +1 more
TL;DR: Various available novel drug delivery technologies which have been developed for delivery of drugs (herbal) are summarized to achieve better therapeutic response and to improve bioavailability of herbal drugs.
Journal ArticleDOI
Simple size-controlled synthesis of Au nanoparticles and their size-dependent catalytic activity.
Petr Suchomel,Libor Kvítek,Robert Prucek,Aleš Panáček,Avik Halder,Stefan Vajda,Stefan Vajda,Radek Zboril +7 more
TL;DR: Eley-Rideal catalytic mechanism emerges as the more probable, in contrary to the Langmuir-Hinshelwood mechanism reported for other noble metal nanocatalysts, for Au nanoparticles in the size range of 6 to 22 nm.
Journal ArticleDOI
Catalytic degradation of methylene blue using biosynthesized gold and silver nanoparticles
V.S. Suvith,Daizy Philip +1 more
TL;DR: A new green method for the synthesis of silver and gold nanoparticles using the Kashayam, Guggulutiktham, an ayurvedic medicine is reported, which is nontoxic and environmentally benign.
Journal ArticleDOI
Review of the methodologies used in the synthesis gold nanoparticles by chemical reduction
TL;DR: A review in gold nanoparticles focusing on chemical reduction synthesis mechanisms is presented in this paper, where the most commonly used synthesis methods are: Turkevich Method, NaBH4 with/without citrate, Seeding-Growth, Synthesis by Ascorbic Acid, Green Synthesis, Brust-Schiffrin, and synthesis using other reducing agents.
Journal ArticleDOI
Eco-friendly synthesis of silver and gold nanoparticles with enhanced bactericidal activity and study of silver catalyzed reduction of 4-nitrophenol.
TL;DR: These synthesized Ag and Au nanoparticles were found to exhibit excellent bactericidal activity against clinically isolated selected pathogens such as Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus.
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Green synthesis of metal nanoparticles using plants
TL;DR: Most of the plants used in metal nanoparticle synthesis are shown in this article, and the advantages of using plant and plant-derived materials for biosynthesis of metal nanoparticles have interested researchers to investigate mechanisms of metal ions uptake and bioreduction by plants, and to understand the possible mechanism of nanoparticle formation in plants.
Journal ArticleDOI
Biological synthesis of metallic nanoparticles.
TL;DR: This review provides an overview of various methods of synthesis of metallic nanoparticles by biological means and indicates that a promising approach to achieve this objective is to exploit the array of biological resources in nature.
Journal ArticleDOI
Formation and Growth of Au Nanoparticles inside Live Alfalfa Plants
Jorge L. Gardea-Torresdey,Jason G. Parsons,E. Gomez,Jose R. Peralta-Videa,Horacio Esteban Troiani,P Santiago,M. José Yacamán,M. José Yacamán +7 more
TL;DR: In this paper, the authors used live plants for the fabrication of nanoparticles and found that the Au nanoparticles are in a crystalline state and showed defects such as twins in the crystal structure and icosahedral nanoparticles were found.
Journal ArticleDOI
Biosynthesis of Au, Ag and Au-Ag nanoparticles using edible mushroom extract.
TL;DR: This report is a report on extracellular synthesis method for the preparation of Au, Ag and Au-Ag nanoparticles in water, using the extract of Volvariella volvacea, a naturally occurring edible mushroom, as reducing and protecting agents.
Journal ArticleDOI
Catalytic Activity of Faceted Gold Nanoparticles Studied by a Model Reaction: Evidence for Substrate-Induced Surface Restructuring
TL;DR: In this paper, the catalytic activity of gold nanoparticles in aqueous solution as a function of temperature was analyzed using the Langmuir-Hinshelwood model.
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