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 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

In situ attachment and its hydrophobicity of size- and shape-controlled silver nanoparticles on fabric surface for bioapplication

2017 ◽  
Vol 47 (8) ◽  
pp. 1196-1203 ◽  
Author(s):  
Krishnamoorthy Rajavel ◽  
Rajkumar Gomathi ◽  
Ramanathaswamy Pandian ◽  
Ramasamy Thangavelu Rajendra Kumar
Keyword(s):  
Silver Nanoparticles ◽  
Size And Shape ◽  
Shape Controlled ◽  
Fabric Surface

scholarly journals High-resolution insights into the early stages of silver nucleation and growth

2015 ◽  
Vol 179 ◽  
pp. 59-77 ◽  
Author(s):  
Cornelia M. Völkle ◽  
Denis Gebauer ◽  
Helmut Cölfen
Keyword(s):  
Experimental Data ◽  
Silver Nanoparticles ◽  
Early Growth ◽  
Nucleation And Growth ◽  
Silver Clusters ◽  
Computational Tools ◽  
Analytical Characterization ◽  
Titration Assay ◽  
First Time

Nucleation and growth of silver nanoparticles has already been investigated with various experimental and computational tools. However, owing to inherent problems associated with the analytical characterization of nucleation processes, there is a general lack of experimental data regarding the earliest precursors and smallest Ag(0) clusters. Here, we address this problem by the application of Synthetic Boundary Crystallization Ultracentrifugation, utilizing a multiwavelength detector for the first time, complemented by a specialized titration assay. These techniques shed new light on silver nanoparticle precursors existing in the pre-nucleation regime, and the initially nucleated ensemble of nanoclusters. For the first time, we present experimental data of UV-Vis spectra for fractionated silver clusters. These allow for unsurpassed insights into the sequence of nucleation and early growth species as well as their optical properties.

Fabrication and Characterization of Size- and Shape-Controlled C60 Nano/microcrystals by Solvent-Induced Reprecipitation Process (SIRP)

2007 ◽  
Vol 1054 ◽  
Author(s):  
Akito Masuhara ◽  
Zhenquan Tan ◽  
Hitoshi Kasai ◽  
Hachiro Nakanishi ◽  
Hidetoshi Oikawa
Keyword(s):  
Crystal Structure ◽  
Molar Ratio ◽  
Hexagonal Crystal Structure ◽  
Hexagonal Crystal ◽  
Crystal Solvates ◽  
Integrated Devices ◽  
Shape Controlled ◽  
Fabrication And Characterization ◽  
Shape And Size

ABSTRACTWe have first developed useful Solvent-Induced Reprecipitation Process, and have first succeeded in fabricating C60 nano/microcrystals with various shape and size, using m-xylene and 2-propanol as good and poor solvents, respectively.It was found that the resulting C60 nano/microcrystals had a hexagonal crystal structure, and that were a kind of crystal solvates in which the molar ratio of C60 to m-xylene was 3:2. C60 nano/microcrystals could be said to be important nano components of integrated devices in electronics.

Synthesis of Size and Shape Controlled Silver Nanoparticles Coated by a Thin Layer of Gold and Their Use as Ultrasensitive Biomolecular Probes

2010 ◽  
Vol 1253 ◽  
Author(s):  
Derrick Mott ◽  
Nguyen Thi Bich Thuy ◽  
Yoshiya Aoki ◽  
Shinya Maenosono
Keyword(s):  
Silver Nanoparticles ◽  
Au Nanoparticles ◽  
Particle Properties ◽  
Size And Shape ◽  
Wet Chemical Synthesis ◽  
Nanoparticle Probes ◽  
Dna Oligonucleotides ◽  
Nano Structures ◽  
Wet Chemical ◽  
Shape Controlled

AbstractSilver nanoparticles coated by a layer of gold (Ag@Au) have received much attention because of their potential application as ultra sensitive probes for the detection of biologically important molecules such as DNA, proteins, amino acids and many others. However, the ability to control the size, shape, and monodispersity of the Ag@Au structure has met with limited success. In our own research we have addressed this challenge by creating an aqueous wet chemical synthesis technique towards size and shape controllable Ag@Au nanoparticles. These materials are highly interesting because of the tunable silver core size, and the tunable gold shell thickness, opening many avenues to the modification of the particle properties in terms of bio-molecular sensing. The resulting nanoparticle probes were functionalized with two complementary stranded DNA oligonucleotides. When combined, the complementary strands hybridized, causing the Ag@Au nanoparticles to assemble into large nano-structures. The presence of the oligonucleotide was confirmed through a series of techniques including UV-Vis and RAMAN spectroscopy, as well as HR-TEM, XPS, DLS, and many others. The results reflect the role that the nanoparticle physical properties play in the detection of the bio-molecules, as well as elucidate the characteristics of the bio-molecule/nanoparticle interaction.

scholarly journals Enhancement of Polymer Cytocompatibility by Nanostructuring of Polymer Surface

2012 ◽  
Vol 2012 ◽  
pp. 1-17 ◽  
Author(s):  
Petr Slepička ◽  
Nikola Slepičková Kasálková ◽  
Lucie Bačáková ◽  
Zdeňka Kolská ◽  
Václav Švorčík
Keyword(s):  
Amino Acids ◽  
Surface Relief ◽  
Polymer Surface ◽  
Plasma Discharge ◽  
Synthetic Polymers ◽  
Active Structures ◽  
Mechanical And Electrical Properties ◽  
Physical Chemical ◽  
Application Potential

Polymers with their advantageous physical, chemical, mechanical, and electrical properties and easy manufacturing are widely used in biology, tissue engineering, and medicine, for example, as prosthetic materials. In some cases the polymer usage may be impeded by low biocompatibility of common synthetic polymers. The biocompatibility can be improved by modification of polymer surface, for example, by plasma discharge, irradiation with ionizing radiation, and sometime subsequent grafting with suitable organic (e.g., amino-acids) or inorganic (e.g., gold nanoparticles) agents. In this way new chemically active structures are created on the polymer surface, and in some cases new surface relief is created. Recent advances in nanotechnology and in characterization of nanostructured objects open the way to development of new polymer-based materials with better bio-properties and higher application potential in biomedicine. Some of recent results obtained in the field are summarized and discussed in this paper.

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.

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