Plasmon mediated shape and size selective synthesis of icosahedral silver nanoparticles via oxidative etching and their 1-D transformation to pentagonal pins

Nanoscale ◽  
2014 ◽  
Vol 6 (14) ◽  
pp. 8045-8051 ◽  
Author(s):  
R. Keunen ◽  
N. Cathcart ◽  
V. Kitaev
Keyword(s):  
Silver Nanoparticles ◽  
Self Assembly ◽  
Shape Selectivity ◽  
Selective Synthesis ◽  
Size And Shape ◽  
Oxidative Etching ◽  
Shape And Size

Silver icosahedral nanoparticles prepared photochemically with high size- and shape-selectivity, icosahedral self-assembly and 1D regrowth have been demonstrated.

Synthesis and characterization of size- and shape-controlled silver nanoparticles

2018 ◽  
Vol 4 (1) ◽  
Author(s):  
Suparna Mukherji ◽  
Sharda Bharti ◽  
Gauri Shukla ◽  
Soumyo Mukherji
Keyword(s):  
Silver Nanoparticles ◽  
Nucleation And Growth ◽  
Detailed Review ◽  
Size And Shape ◽  
Physical Chemical ◽  
Application Potential ◽  
Shape Controlled ◽  
Synthesis Routes ◽  
Shape And Size

Abstract Silver nanoparticles (AgNPs) have application potential in diverse areas ranging from wound healing to catalysis and sensing. The possibility for optimizing the physical, chemical and optical properties for an application by tailoring the shape and size of silver nanoparticles has motived much research on methods for synthesis of size- and shape-controlled AgNPs. The shape and size of AgNPs are reported to vary depending on choice of the Ag precursor salt, reducing agent, stabilizing agent and on the synthesis technique used. This chapter provides a detailed review on various synthesis approaches that may be used for synthesis of AgNPs of desired size and shape. Silver nanoparticles may be synthesized using diverse routes, including, physical, chemical, photochemical, biological and microwave -based techniques. Synthesis of AgNPs of diverse shapes, such as, nanospheres, nanorods, nanobars, nanoprisms, decahedral nanoparticles and triangular bipyramids is also discussed for chemical-, photochemical- and microwave-based synthesis routes. The choice of chemicals used for reduction and stabilization of nanoparticles is found to influence their shape and size significantly. A discussion on the mechanism of synthesis of AgNPs through nucleation and growth processes is discussed for AgNPs of varying shape and sizes so as to provide an insight on the various synthesis routes. Techniques, such as, electron microscopy, spectroscopy, and crystallography that can be used for characterizing the AgNPs formed in terms of their shape, sizes, crystal structure and chemical composition are also discussed in this chapter. Graphical Abstract:

scholarly journals Estudio sobre metodologías aplicadas para la síntesis de nanopartículas de cobre (NPsCU) y plata (NPsAG) en diferentes formas y tamaños

2018 ◽  
Vol 27 (2) ◽  
pp. 45
Author(s):  
Gabriel A. Lopez R. ◽  
Juan C. Ataucuri S.
Keyword(s):  
Silver Nanoparticles ◽  
Copper Nanoparticles ◽  
Scientific Research ◽  
Nanoparticle Synthesis ◽  
Size And Shape ◽  
Palabras Clave ◽  
Methods Of Synthesis ◽  
Potential Applications ◽  
The Subject ◽  
Shape And Size

Actualmente las nanopartículas (NPs) son un área de intensa investigación científica, debido a una amplia variedad de aplicaciones potenciales en campos tales como biomédicos, ópticos, electrónicos, nano química o agricultura. Las propiedades de estas nanoestructuras están en función de su tamaño y forma, obteniendo propiedades específicas de acuerdo a la variedad de dichas características mencionadas. Por ello se realiza un análisis bibliográfico de diferentes investigadores que realizaron un estudio riguroso acerca de los diferentes métodos de síntesis de nanopartículas de cobre (NPsCu) y nanopartículas plata (NPsAg), así como también los factores que modifican la forma y tamaño de partícula. Como conclusión principal podemos señalar que el control de la forma y tamaño de las nanopartículas se debe a factores que puedan ser controlables. Palabras clave.- Síntesis de nanopartículas, nanopartículas de cobre, nanopartículas de plata ABSTRACT Nanoparticles (NPs) are currently the subject of intense scientific research due to a wide variety of potential applications in various fields such as medicine, optics, electronics, nano‐chemistry and agriculture. The properties of these nanostructures depend on their size and shape, and specific properties can be obtained by varying these characteristics. For this reason, a bibliographical analysis was carried out covering different investigators who studied the various methods of synthesis of copper (NPsCu) and silver (NPsAg) nanoparticles, as well as the factors that modify the shape and size of these particles. A main conclusion of this study is that the shape and size of the nanoparticles depend upon factors that can be controlled. Keywords.- nanoparticle synthesis, copper nanoparticles, silver nanoparticles.

scholarly journals In-Liquid Plasma Process for Size- and Shape-Controlled Synthesis of Silver Nanoparticles by Controlling Gas Bubbles in Water

Materials ◽  
2018 ◽  
Vol 11 (6) ◽  
pp. 891 ◽  
Author(s):  
Hyun-Jin Kim ◽  
Jun-Goo Shin ◽  
Choon-Sang Park ◽  
Dae Kum ◽  
Bhum Shin ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Gas Bubbles ◽  
Controlled Synthesis ◽  
Plasma Process ◽  
Size And Shape ◽  
Shape Controlled

Shape and stability of silver nanoparticles and their dependence on the conditions of preparation.

2012 ◽  
Vol 1371 ◽  
Author(s):  
M.I. Hernández-Castillo ◽  
O. Zaca-Moran ◽  
P. Zaca-Moran ◽  
M. Rojas-López ◽  
V.L. Gayou ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Reaction Time ◽  
Ag Nanoparticles ◽  
Reduction Procedure ◽  
Visible Spectrophotometry ◽  
Logical Sequence ◽  
Uv Visible ◽  
Citrate Reduction ◽  
Shape And Size

ABSTRACTBy using the citrate reduction procedure we have synthesized Ag nanoparticles, applying several conditions of preparation, being after characterized by UV-visible spectrophotometry. Following a logical sequence, the starting experiment was realized varying the reaction time, after that it was varied the concentration of the reductor agent, and finally it was varied the volume of the reductor agent. According to this methodology, TEM measurements show that firstly we have nanostructures with different shape and size, whereas in the last part of the experiment we have Ag nanoparticles with homogeneous shape and size.

Estimating the shape and size of supramolecular assemblies by variable temperature diffusion ordered spectroscopy

2014 ◽  
Vol 12 (40) ◽  
pp. 7932-7936 ◽  
Author(s):  
Benjamin M. Schulze ◽  
Davita L. Watkins ◽  
Jing Zhang ◽  
Ion Ghiviriga ◽  
Ronald K. Castellano
Keyword(s):  
Self Assembly ◽  
Variable Temperature ◽  
Supramolecular Assemblies ◽  
The Self ◽  
Conjugated Oligomers ◽  
Photovoltaic Devices ◽  
Temperature Diffusion ◽  
Shape And Size

Reported is characterization of the self-assembly of π-conjugated oligomers, molecules studied recently in photovoltaic devices, using variable temperature diffusion ordered spectroscopy; the approach has allowed estimation of assembly size, shape, and molecularity.

Selective synthesis of CdWO4 short nanorods and nanofibers and their self-assembly

2004 ◽  
Vol 177 (12) ◽  
pp. 4588-4596 ◽  
Author(s):  
Hai-Lin Wang ◽  
Xiao-Dong Ma ◽  
Xue-Feng Qian ◽  
Jie Yin ◽  
Zi-Kang Zhu
Keyword(s):  
Self Assembly ◽  
Selective Synthesis ◽  
Short Nanorods

A ‘Building Block’ Approach To Mixed-Colloid Systems Through Electrostatic Self-Organization

2001 ◽  
Vol 676 ◽  
Author(s):  
Trent H. Galow ◽  
Andrew K. Boal ◽  
Vincent M. Rotello
Keyword(s):  
Particle Size ◽  
Self Assembly ◽  
Building Block ◽  
Acid Base ◽  
Electrostatic Assembly ◽  
Polymer Colloid ◽  
Colloid Systems ◽  
Carboxylic Acid Derivative ◽  
Block Approach ◽  
Shape And Size

ABSTRACTWe have developed a highly modular electrostatically-mediated approach to colloid-colloid and polymer-colloid networks using ‘building block’ and ‘bricks and mortar’ self-assembly methodologies, respectively. The former approach involved functionalization of one type of nanoparticle building block with a primary amine and a counterpart building block with a carboxylic acid derivative. After combining these two systems, acid-base chemistry followed by immediate charge-pairing resulted in the spontaneous formation of electrostatically-bound mixed-nanoparticle constructs. The shape and size of these ensembles were controlled via variation of particle size and stoichiometries. In the ‘bricks and mortar’ approach, a functionalized polymer is combined with complementary nanoparticles to provide mixed polymer-nanoparticle networked structures. A notable feature is the inherent porosity resulting from the electrostatic assembly. The shape and size of these ensembles were controlled via variation of particle size, stoichiometries and the order in which they were added.

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