scholarly journals Continuous flow synthesis of citrate capped gold nanoparticles using UV induced nucleation

RSC Advances ◽  
2017 ◽  
Vol 7 (16) ◽  
pp. 9632-9638 ◽  
Author(s):  
H. du Toit ◽  
T. J. Macdonald ◽  
H. Huang ◽  
I. P. Parkin ◽  
A. Gavriilidis
Keyword(s):  
Particle Size ◽  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Continuous Flow ◽  
Nanoparticle Synthesis ◽  
Nucleation And Growth ◽  
Reactor System ◽  
Growth Phases ◽  
Flow Synthesis ◽  
Gold Nanoparticle Synthesis

A novel multimodal reactor system for separating the nucleation and growth phases of gold nanoparticle synthesis to control particle size.

Curcumin conjugated gold nanoparticle synthesis and its biocompatibility

RSC Advances ◽  
2014 ◽  
Vol 4 (4) ◽  
pp. 1808-1818 ◽  
Author(s):  
K. Sindhu ◽  
A. Rajaram ◽  
K. J. Sreeram ◽  
Rama Rajaram
Keyword(s):  
Gold Nanoparticles ◽  
Green Chemistry ◽  
Gold Nanoparticle ◽  
Nanoparticle Synthesis ◽  
Gold Nanoparticle Synthesis

Gold nanoparticles have gained much attention due to their widespread biological and technological applications, and consequently their simpler synthesis via green chemistry has also become of foremost importance.

The impact of the polar core size and external organic media composition on micelle–micelle interactions: the effect on gold nanoparticle synthesis

2015 ◽  
Vol 39 (11) ◽  
pp. 8887-8895 ◽  
Author(s):  
Jorge A. Gutierrez ◽  
M. Alejandra Luna ◽  
N. Mariano Correa ◽  
Juana J. Silber ◽  
R. Darío Falcone
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Reverse Micelles ◽  
Nanoparticle Synthesis ◽  
Organic Media ◽  
Core Size ◽  
Media Composition ◽  
Gold Nanoparticle Synthesis ◽  
The Impact

An easy way to modulate reverse micelles as nanoreactors to produce different kinds of gold nanoparticles.

BIOSYNTHESIS AND CHARACTERIZATION OF GOLD NANOPARTICLES USING THE ALGA Kappaphycus alvarezii

2010 ◽  
Vol 09 (05) ◽  
pp. 511-516 ◽  
Author(s):  
P. RAJASULOCHANA ◽  
R. DHAMOTHARAN ◽  
P. MURUGAKOOTHAN ◽  
S. MURUGESAN ◽  
P. KRISHNAMOORTHY
Keyword(s):  
Electron Microscopy ◽  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Kappaphycus Alvarezii ◽  
Nanoparticle Synthesis ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Ft Ir ◽  
Gold Nanoparticle Synthesis

As a part of our ongoing investigation into the use of algae for gold nanoparticle synthesis, we screened the marine alga Kappaphycus alvarezii, to investigate its efficiency to reduce gold ions as well as the formation of gold nanoparticles. In the present work, we report the reaction condition of the alga K. alvarezii with aqueous gold ions for gold nanoparticle synthesis within the biomass extracellularly. The formation of gold nanoparticles was characterized by UV–Vis spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) method. Moreover, we have found that the reaction of gold ions with the K. alvarezii biomass under stationary conditions results in the rapid extracellular formation of gold nanoparticles of spherical morphology. The gold nanoparticles are not toxic to the cells that continued to grow after the biosynthesis of the gold nanoparticles.

scholarly journals Continuous synthesis of gold nanoparticles in micro- and millifluidic systems

2018 ◽  
Vol 6 (3) ◽  
Author(s):  
He Huang ◽  
Hendrik du Toit ◽  
Luca Panariello ◽  
Luca Mazzei ◽  
Asterios Gavriilidis
Keyword(s):  
Gold Nanoparticles ◽  
Nanoparticle Synthesis ◽  
Reactor Operation ◽  
Design Procedures ◽  
Time Control ◽  
Starting Point ◽  
Quantitative Understanding ◽  
Gold Nanomaterials ◽  
Gold Nanoparticle Synthesis ◽  
Flow Devices

Abstract Gold nanomaterials have diverse applications ranging from healthcare and nanomedicine to analytical sciences and catalysis. Microfluidic and millifluidic reactors offer multiple advantages for their synthesis and manufacturing, including controlled or fast mixing, accurate reaction time control and excellent heat transfer. These advantages are demonstrated by reviewing gold nanoparticle synthesis strategies in flow devices. However, there are still challenges to be resolved, such as reactor fouling, particularly if robust manufacturing processes are to be developed to achieve the desired targets in terms of nanoparticle size, size distribution, surface properties, process throughput and robustness. Solutions to these challenges are more effective through a coordinated approach from chemists, engineers and physicists, which has at its core a qualitative and quantitative understanding of the synthesis processes and reactor operation. This is important as nanoparticle synthesis is complex, encompassing multiple phenomena interacting with each other, often taking place at short timescales. The proposed methodology for the development of reactors and processes is generic and contains various interconnected considerations. It aims to be a starting point towards rigorous design procedures for the robust and reproducible continuous flow synthesis of gold nanoparticles. Graphical Abstract:

scholarly journals Enhanced Extracellular Synthesis of Gold Nanoparticles by Soluble Extracts from Escherichia coli Transformed with Rhizobium tropici Phytochelatin Synthase Gene

Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 472
Author(s):  
Qunying Yuan ◽  
Manjula Bomma ◽  
Zhigang Xiao
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Synthesis Method ◽  
Nanoparticle Synthesis ◽  
Morphological Properties ◽  
Phytochelatin Synthase ◽  
Rhizobium Tropici ◽  
Whole Cells ◽  
E Coli ◽  
Recombinant Cells

Phytochelatins, the enzymatic products of phytochelatin synthase, play a principal role in protecting the plants from heavy metal and metalloid toxicity due to their ability to scavenge metal ions. In the present study, we investigated the capacity of soluble intracellular extracts from E. coli cells expressing R. tropici phytochelatin synthase to synthesize gold nanoparticle. We discovered that the reaction mediated by soluble extracts from the recombinant E. coli cells had a higher yield of gold nanoparticles, compared to that from the control cells. The compositional and morphological properties of the gold nanoparticles synthesized by the intracellular extracts from recombinant cells and control cells were similar. In addition, this extracellular nanoparticle synthesis method produced purer gold nanoparticles, avoiding the isolation of nanoparticles from cellular debris when whole cells are used to synthesize nanoparticles. Our results suggested that phytochelatins can improve the efficiency of gold nanoparticle synthesis mediated by bacterial soluble intracellular extracts, and the potential of extracellular nanoparticle synthesis platform for the production of nanoparticles in large quantity and pure form is worth further investigation.

scholarly journals Continuous‐Flow Synthesis of ZIF‐8 Biocomposites with Tunable Particle Size

2020 ◽  
Vol 59 (21) ◽  
pp. 8123-8127 ◽  
Author(s):  
Francesco Carraro ◽  
Jason D. Williams ◽  
Mercedes Linares‐Moreau ◽  
Chiara Parise ◽  
Weibin Liang ◽  
...  
Keyword(s):  
Particle Size ◽  
Continuous Flow ◽  
Flow Synthesis
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