Formation mechanisms for gold nanoparticles in a redesigned Ultrasonic Spray Pyrolysis

2017 ◽  
Vol 28 (3) ◽  
pp. 876-883 ◽  
Author(s):  
Peter Majerič ◽  
Darja Jenko ◽  
Bernd Friedrich ◽  
Rebeka Rudolf
Keyword(s):  
Gold Nanoparticles ◽  
Spray Pyrolysis ◽  
Ultrasonic Spray Pyrolysis ◽  
Formation Mechanisms ◽  
Ultrasonic Spray

scholarly journals Advances in Ultrasonic Spray Pyrolysis Processing of Noble Metal Nanoparticles—Review

Materials ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 3485
Author(s):  
Peter Majerič ◽  
Rebeka Rudolf
Keyword(s):  
Metal Nanoparticles ◽  
Spray Pyrolysis ◽  
Noble Metal ◽  
Ultrasonic Spray Pyrolysis ◽  
Noble Metal Nanoparticles ◽  
Formation Mechanisms ◽  
Nanoparticle Formation ◽  
Ultrasonic Spray ◽  
Sensing Applications ◽  
Mechanisms Of Formation

In the field of synthesis and processing of noble metal nanoparticles, the study of the bottom-up method, called Ultrasonic Spray Pyrolysis (USP), is becoming increasingly important. This review analyses briefly the features of USP, to underline the physical, chemical and technological characteristics for producing nanoparticles and nanoparticle composites with Au and Ag. The main aim is to understand USP parameters, which are responsible for nanoparticle formation. There are two nanoparticle formation mechanisms in USP: Droplet-To-Particle (DTP) and Gas-To-Particle (GTP). This review shows how the USP process is able to produce Au, Ag/TiO2, Au/TiO2, Au/Fe2O3 and Ag/(Y0.95 Eu0.05)2O3 nanoparticles, and presents the mechanisms of formation for a particular type of nanoparticle. Namely, the presented Au and Ag nanoparticles are intended for use in nanomedicine, sensing applications, electrochemical devices and catalysis, in order to benefit from their properties, which cannot be achieved with identical bulk materials. The development of new noble metal nanoparticles with USP is a constant goal in Nanotechnology, with the objective to obtain increasingly predictable final properties of nanoparticles.

Cytotoxicity of Gold Nanoparticles Prepared by Ultrasonic Spray Pyrolysis

2010 ◽  
Vol 26 (5) ◽  
pp. 595-612 ◽  
Author(s):  
R. Rudolf ◽  
B. Friedrich ◽  
S. Stopić ◽  
I. Anžel ◽  
S. Tomić ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Spray Pyrolysis ◽  
Ultrasonic Spray Pyrolysis ◽  
Ultrasonic Spray

scholarly journals The Effect of Stabilisation Agents on the Immunomodulatory Properties of Gold Nanoparticles Obtained by Ultrasonic Spray Pyrolysis

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4121 ◽  
Author(s):  
Marina Bekić ◽  
Sergej Tomić ◽  
Rebeka Rudolf ◽  
Marijana Milanović ◽  
Dragana Vučević ◽  
...  
Keyword(s):  
Immune Response ◽  
Gold Nanoparticles ◽  
Spray Pyrolysis ◽  
Inflammatory Cytokines ◽  
Mononuclear Cells ◽  
Biological Fluids ◽  
Ultrasonic Spray Pyrolysis ◽  
Drug Carriers ◽  
Ultrasonic Spray ◽  
Pro Inflammatory Cytokines

Gold nanoparticles (GNPs) have been investigated extensively as drug carriers in tumour immunotherapy in combination with photothermal therapy. For this purpose, GNPs should be stabilised in biological fluids. The goal of this study was to examine how stabilisation agents influence cytotoxicity and immune response in vitro. Spherical GNPs, 20 nm in size, were prepared by ultrasonic spray pyrolysis (USP). Three types of stabilising agents were used: sodium citrate (SC), polyvinyl-pyrrolidone (PVP), and poly-ethylene glycol (PEG). Pristine, non-stabilised GNPs were used as a control. The culture models were mouse L929 cells, B16F10 melanoma cells and human peripheral blood mononuclear cells (PBMNCs), obtained from healthy donors. Control SC- and PEG-GNPs were non-cytotoxic at concentrations (range 1–100 µg/mL), in contrast to PVP-GNPs, which were cytotoxic at higher concentrations. Control GNPs inhibited the production of IFN-ϒ slightly, and augmented the production of IL-10 by PHA-stimulated PBMNC cultures. PEG-GNPs inhibited the production of pro-inflammatory cytokines (IL-1, IL-6, IL-8, TNF-α) and Th1-related cytokines (IFN-ϒ and IL-12p70), and increased the production of Th2 cytokines (IL-4 and IL-5). SC-PEG inhibited the production of IL-8 and IL-17A. In contrast, PVP-GNPs stimulated the production of pro-inflammatory cytokines, Th1 cytokines, and IL-17A, but also IL-10. When uptake of GNPs by monocytes/macrophages in PBMNC cultures was analysed, the ingestion of PEG- GNPs was significantly lower compared to SC- and PVP-GNPs. In conclusion, stabilisation agents modulate biocompatibility and immune response significantly, so their adequate choice for preparation of GNPs is an important factor when considering the use of GNPs for application in vivo.

Application of Gold(III) Acetate as a New Precursor for the Synthesis of Gold Nanoparticles in PEG Through Ultrasonic Spray Pyrolysis

2017 ◽  
Vol 28 (3) ◽  
pp. 1647-1665 ◽  
Author(s):  
Mohammed Shariq ◽  
Peter Majerič ◽  
Bernd Friedrich ◽  
Bojan Budic ◽  
Darja Jenko ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Spray Pyrolysis ◽  
Ultrasonic Spray Pyrolysis ◽  
Ultrasonic Spray

scholarly journals In SituSynthesis and Deposition of Gold Nanoparticles with Different Morphologies on Glass and ITO Substrate by Ultrasonic Spray Pyrolysis

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
María de la Garza ◽  
Israel López ◽  
Idalia Gómez
Keyword(s):  
Gold Nanoparticles ◽  
Spray Pyrolysis ◽  
Indium Tin Oxide ◽  
Average Particle Size ◽  
Ultrasonic Spray Pyrolysis ◽  
Average Particle ◽  
Particle Sizes ◽  
Ultrasonic Spray ◽  
Ito Film

Gold nanoparticles were synthesized and depositedin situby ultrasonic spray pyrolysis on glass and indium tin oxide (ITO) substrates. This technique led to the formation of gold nanoparticles with different morphologies without the use of any capping agent. The gold nanoparticles deposited on glass substrate were obtained as nanospheres with an average particle size of 30 nm with some agglomerates; however, the nanoparticles deposited on ITO substrate were obtained with different morphologies, such as triangular nanoprisms, nanorods, nanocubes, and nanorhombus, with particle sizes between 40 and 100 nm. The ITO substrate influenced the morphology of the gold nanoparticles obtained due to changes in the deposition temperature, which also change the crystalline structure of the ITO film on the substrate.

scholarly journals Successful Synthesis of Gold Nanoparticles through Ultrasonic Spray Pyrolysis from a Gold(III) Nitrate Precursor and Their Interaction with a High Electron Beam

ChemistryOpen ◽  
2018 ◽  
Vol 7 (7) ◽  
pp. 533-542 ◽  
Author(s):  
Mohammed Shariq ◽  
Bernd Friedrich ◽  
Bojan Budic ◽  
Nejc Hodnik ◽  
Francisco Ruiz-Zepeda ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Electron Beam ◽  
Spray Pyrolysis ◽  
Ultrasonic Spray Pyrolysis ◽  
High Electron ◽  
Ultrasonic Spray ◽  
Nitrate Precursor

scholarly journals SYNTHESIS OF GOLD NANOPARTICLES THROUGH ULTRASONIC SPRAY PYROLYSIS AND ITS APPLICATION IN PRINTED ELECTRONICS

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Rebeka Rudolf ◽  
Mohammed Shariq ◽  
Valentina Veselinovic ◽  
Tijana Adamovic ◽  
Rajko Bobovnik ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Spray Pyrolysis ◽  
Process Parameters ◽  
Printed Electronics ◽  
Ultrasonic Spray Pyrolysis ◽  
Precursor Solution ◽  
Second Step ◽  
Synthesis Mechanism ◽  
Ultrasonic Spray ◽  
Edx Analyses

This work presents a review of Ultrasonic Spray Pyrolysis (USP) as a technique for the synthesis of gold nanoparticle (AuNPs). The synthesis mechanism involved the preparation of the precursor solution from Au (III) Acetate and the study of the process parameters. AuNPs were characterized with different techniques, such as DLS, UV-vis and SEM-EDX analyses. In the second step, the AuNPs` ink was prepared with the following procedure: (i) Concentration of the AuNPs through Rotavapor, (ii) Filtration of the concentrated AuNPs through Amicon Ultra 15 Centrifugal Filters. Then, it was used directly for printing on an Ag plate. In the final part, we present some information about AuNPs` future applications, which could be in printed electronics with conducted patterns.

Deposition of gold nanoparticles on glass substrate by ultrasonic spray pyrolysis

2010 ◽  
Vol 174 (1-3) ◽  
pp. 9-12 ◽  
Author(s):  
María de la Garza ◽  
Tomás Hernández ◽  
Rafael Colás ◽  
Idalia Gómez
Keyword(s):  
Gold Nanoparticles ◽  
Spray Pyrolysis ◽  
Glass Substrate ◽  
Ultrasonic Spray Pyrolysis ◽  
Ultrasonic Spray
Sign in / Sign up

Export Citation Format

Share Document