Journal ArticleDOI
Rapid synthesis of Au, Ag, and bimetallic Au core-Ag shell nanoparticles using Neem (Azadirachta indica) leaf broth.
TLDR
The rates of reduction of the metal ions by Neem leaf extract are much faster than those observed by us in earlier studies using microorganisms such as fungi, highlighting the possibility that nanoparticle biological synthesis methodologies will achieve rates of synthesis comparable to those of chemical methods.About:
This article is published in Journal of Colloid and Interface Science.The article was published on 2004-07-15. It has received 2339 citations till now. The article focuses on the topics: Silver nanoparticle & Silver nitrate.read more
Citations
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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
Silver nanoparticles: mechanism of antimicrobial action, synthesis, medical applications, and toxicity effects
S. Prabhu,Eldho K Poulose +1 more
TL;DR: A comprehensive view on the mechanism of action, production, applications in the medical field, and health and environmental concerns that are allegedly caused due to these nanoparticles is provided in this paper.
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.
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Synthesis of metallic nanoparticles using plant extracts.
TL;DR: The methods of making nanoparticles using plant extracts are reviewed, methods of particle characterization are reviewed and potential applications of the particles in medicine are discussed.
Journal ArticleDOI
Biosynthesis of silver and gold nanoparticles by novel sundried Cinnamomum camphora leaf
Jiale Huang,Qingbiao Li,Daohua Sun,Yinghua Lu,Yuanbo Su,Xin Yang,Huixuan Wang,Yuanpeng Wang,Wenyao Shao,Ning He,Jinqing Hong,Cuixue Chen +11 more
TL;DR: In this article, a sundried biomass of Cinnamomum camphora leaf with aqueous silver or gold precursors at ambient temperature was used for simple synthesis of nanoparticles.
References
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Journal ArticleDOI
The Optical Properties of Metal Nanoparticles: The Influence of Size, Shape, and Dielectric Environment
TL;DR: In this paper, the authors describe recent progress in the theory of nanoparticle optical properties, particularly methods for solving Maxwell's equations for light scattering from particles of arbitrary shape in a complex environment.
Journal ArticleDOI
Surface Plasmon Spectroscopy of Nanosized Metal Particles
TL;DR: In this paper, the use of optical measurements to monitor electrochemical changes on the surface of nanosized metal particles is discussed within the Drude model, and the absorption spectrum of a metal sol in water is shown to be strongly affected by cathodic or anodic polarization, chemisorption, metal adatom deposition, and alloying.
Journal ArticleDOI
Extracellular biosynthesis of silver nanoparticles using the fungus Fusarium oxysporum
Absar Ahmad,Priyabrata Mukherjee,Satyajyoti Senapati,Deendayal Mandal,M. Islam Khan,Rajiv Kumar,Murali Sastry +6 more
TL;DR: It is observed that aqueous silver ions when exposed to the fungus Fusarium oxysporum are reduced in solution, thereby leading to the formation of an extremely stable silver hydrosol, creating the possibility of developing a rational, fungal-based method for the synthesis of nanomaterials over a range of chemical compositions, which is currently not possible by other microbe-based methods.
Journal ArticleDOI
Polycationic Peptides from Diatom Biosilica That Direct Silica Nanosphere Formation
TL;DR: A set of polycationic peptides isolated from diatom cell walls were shown to generate networks of silica nanospheres within seconds when added to a solution of silicic acid.
Journal ArticleDOI
Fungus-mediated synthesis of silver nanoparticles and their immobilization in the mycelial matrix: a novel biological approach to nanoparticle synthesis
Priyabrata Mukherjee,Absar Ahmad,Deendayal Mandal,Satyajyoti Senapati,Sudhakar R. Sainkar,Mohammad Imran Khan,Renu Parishcha,P. V. Ajaykumar,Mansoor Alam,Rajiv Kumar,Murali Sastry +10 more
TL;DR: Electron microscopy analysis of thin sections of the fungal cells indicated that the silver particles were formed below the cell wall surface, possibly due to reduction of the metal ions by enzymes present in the cell walls membrane.
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