Composite nanosilver structures suitable for plasmonic biosensors

AbstractSilver (Ag) nanoparticles dispersed in an amorphous silica (SiO2) matrix or coated by a SiO2 layer were synthesized by flame spray pyrolysis (FSP). The coated nanoparticles were produced by using a modified enclosed FSP setup, in which the SiO2 precursor was injected through a ring above the FSP nozzle at various burner-ring-distances (BRDs), after the core Ag nanoparticles had been formed. The produced nanoparticles were characterized by XRD, BET, TEM and UV/vis analysis. The Ag particle size was possible to be controlled by tuning the FSP parameters. For the SiO2 coated nanoparticles, larger Ag core sizes were obtained for higher BRDs. All the produced nanoparticles exhibited the characteristic plasmon resonance frequency of Ag nanoparticles.

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Gas-phase Synthesis of Silver Nanoparticles for Plasmonic Biosensors

MRS Proceedings ◽

10.1557/opl.2013.527 ◽

2013 ◽

Vol 1509 ◽

Cited By ~ 2

Author(s):

Georgios A. Sotiriou ◽

Christoph O. Blattmann ◽

Sotiris E. Pratsinis

Keyword(s):

Particle Size ◽

Gas Phase ◽

Ag Nanoparticles ◽

Flame Spray Pyrolysis ◽

Flame Spray ◽

Phase Synthesis ◽

The Core ◽

Coated Nanoparticles ◽

Ag Particle ◽

Plasmon Resonance Frequency

ABSTRACTSilver (Ag) nanoparticles dispersed in an amorphous silica (SiO2) matrix or coated by a SiO2 layer were synthesized by flame spray pyrolysis (FSP). The coated nanoparticles were produced by using a modified enclosed FSP setup, in which the SiO2 precursor was injected through a ring above the FSP nozzle at various burner-ring-distances (BRDs), after the core Ag nanoparticles had been formed. The produced nanoparticles were characterized by XRD, BET, TEM and UV/vis analysis. The Ag particle size was possible to be controlled by tuning the FSP parameters. For the SiO2 coated nanoparticles, larger Ag core sizes were obtained for higher BRDs. All the produced nanoparticles exhibited the characteristic plasmon resonance frequency of Ag nanoparticles.

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KARAKTERISTIK FISIK NANOKOMPOSIT ZNO/Fe2O3 YANG DIBUAT MENGGUNAKAN FLAME SPRAY PYROLISIS DENGAN VARIASI LAJU ALIR GAS PEMBAWA

EKUILIBIUM ◽

10.20961/ekuilibrium.v10i1.2222 ◽

2011 ◽

Vol 10 (1) ◽

Author(s):

Arif Jumari ◽

Agus Purwanto ◽

Sperisa Distantina

Keyword(s):

Particle Size ◽

Surface Area ◽

Flow Rate ◽

Gas Flow ◽

Catalytic Performance ◽

Flame Spray Pyrolysis ◽

Flame Spray ◽

Gas Flow Rate ◽

Carrier Gas ◽

Carrier Gas Flow

Abstract: Biodiesel is a very potential alternative energy resources. Producing of Biodiesel was much carried out using homogeneous catalytic esterification of vegetable oil and alcohol. These proces had many disanvantages. ZnO as a transesterification catalyst has given high yield. To improve the catalytic performance, the surface area per mas of catalyst must be increased by decreasing the size of particle. To ease the separation between product and catalyst, the magnetic behaviour should be added to the catalyst. The aim of the research were to obtain nanocomposite ZnO/Fe2O3 and determine physical characteristic as well as catalytic and separation performance. Nanocomposite ZnO/Fe2O3 was synthesized by flame spray pyrolysis method. Assisted by carrier air precursor solution of Zn(NO3)2 and Fe(NO3)3 was nebulized and flowed to the inner tube of the burner. Nebulasation was carried out by varying carrier gas flow rate but at constant rateof nebulization. LPG gas dan oxidant air were flowed to the inner annulus and outer annulus, respectively. The solid produced was separated from gas by particle filter. The solid particle was then examined by XRD , FE-SEM and BET as wel as catalytic performance. The result showed that the crystalinity of samples decreased by increasing the carrier gas flow rate. The particle size was not influenced by carrier gas flow rate and the size were dominantly between 50-100 nm. A part of particle was flowerlike particle. The specific surface area of particle was not inflenced by carrier gas flow rate and its value was 50.5 m2/gram. Keywords : Tran-esterification, nanocomposite ZnO/Fe2O3, flame spray pyrolysis, carrier gas, particle size, particle morphology, specific surface area

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Red shift of plasmon resonance frequency due to the interacting Ag nanoparticles embedded in single crystal SiO2 by implantation

Applied Physics Letters ◽

10.1063/1.121196 ◽

1998 ◽

Vol 72 (15) ◽

pp. 1823-1825 ◽

Cited By ~ 126

Author(s):

Zhengxin Liu ◽

Honghong Wang ◽

Hao Li ◽

Xuemei Wang

Keyword(s):

Single Crystal ◽

Resonance Frequency ◽

Plasmon Resonance ◽

Ag Nanoparticles ◽

Red Shift ◽

Plasmon Resonance Frequency

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PENGARUH LAJU ALIR LPG (SEBAGAI BAHAN BAKAR BURNER) TERHADAP KARAKTERISTIK NANOKOMPOSIT ZnO/Fe2O3 YANG DIBUAT MENGGUNAKAN FLAME SPRAY PYROLISIS

EKUILIBIUM ◽

10.20961/ekuilibrium.v10i1.2224 ◽

2011 ◽

Vol 10 (1) ◽

Author(s):

Agus Purwanto ◽

Arif Jumari ◽

Sperisa Distantina

Keyword(s):

Particle Size ◽

Specific Surface ◽

Spray Pyrolysis ◽

Surface Area ◽

Specific Surface Area ◽

Flow Rate ◽

Catalytic Performance ◽

Side Product ◽

Flame Spray Pyrolysis ◽

Flame Spray

Abstract: Biodiesel is produced through catalytic esterification process of vegetable oil and alcohol. Producing of biodiesel was much carried out using homogeneous catalyst (acid/base). These process had many disanvantages: high energy consumption, side product formed and complicated separation among side product and catalyst. ZnO as transesterification catalyst has given high yield. To improve the catalytic performance, surface area per mas of catalyst must be increased by decreasing size of particle. To ease separation between product and catalyst, magnetic behaviour should be added to the catalyst. Aims of research were to obtain nanocomposite ZnO/Fe2O3 and determine physical characteristic as well as catalytic and separation performance of nanocomposite ZnO/Fe2O3. Nanocomposite ZnO/Fe2O3 was synthesized by flame spray pyrolysis method. Assisted by carrier air precursor solution of Zn(NO3)2 and Fe(NO3)3 was nebulized and flowed to inner tube of burner. Nebulasation was carried out by varying carrier gas flow rate but at constant rate of nebulization. LPG gas dan oxidant air were flowed to the inner annulus and outer annulus, respectively. The solid produced was separated from gas by particle filter. Solid particle obtained was then examined by X Ray Defraction (XRD), FE-SEM and BET as wel as catalytic performance. The result of the research showed that crystalinity of particles increased by increasing LPG flow rate. Particle size of ZnO/Fe2O3 nanocomposite decreased by increasing LPG flow rate and size were dominantly between 50-100 nm. A part of particle was flowerlike particle. Specific surface area of ZnO/Fe2O3 nanocomposite increased by increasing LPG flow rate and its value were between 45-55 m2/gram. Keywords: Tran-esterification, nanocomposite ZnO/Fe2O3, flame spray pyrolysis, carrier gas, particle size, morphology of particle, specific surface area

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Photoluminescence of as an indication of crystal structure and particle size in nanoparticles synthesized by flame spray pyrolysis

Journal of Aerosol Science ◽

10.1016/j.jaerosci.2005.08.009 ◽

2006 ◽

Vol 37 (3) ◽

pp. 402-412 ◽

Cited By ~ 94

Author(s):

Dosi Dosev ◽

Bing Guo ◽

Ian M. Kennedy

Keyword(s):

Crystal Structure ◽

Particle Size ◽

Spray Pyrolysis ◽

Flame Spray Pyrolysis ◽

Flame Spray

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Towards Online Steering of Flame Spray Pyrolysis Nanoparticle Synthesis

2020 IEEE/ACM 2nd Annual Workshop on Extreme-scale Experiment-in-the-Loop Computing (XLOOP) ◽

10.1109/xloop51963.2020.00011 ◽

2020 ◽

Author(s):

Maksim Levental ◽

Ryan Chard ◽

Joseph A. Libera ◽

Kyle Chard ◽

Aarthi Koripelly ◽

...

Keyword(s):

Spray Pyrolysis ◽

Nanoparticle Synthesis ◽

Flame Spray Pyrolysis ◽

Flame Spray

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CuAl2O4–CuO–Al2O3 catalysts prepared by flame-spray pyrolysis for glycerol hydrogenolysis

Molecular Catalysis ◽

10.1016/j.mcat.2021.111426 ◽

2021 ◽

pp. 111426

Author(s):

Naphaphan Kunthakudee ◽

Pongtanawat Khemthong ◽

Chuleeporn Luadthong ◽

Joongjai Panpranot ◽

Okorn Mekasuwandumrong ◽

...

Keyword(s):

Spray Pyrolysis ◽

Flame Spray Pyrolysis ◽

Flame Spray ◽

Glycerol Hydrogenolysis

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Microstructure Characterization of Ag Nanoparticles Prepared by Hydrothermal Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.476-478.1138 ◽

2012 ◽

Vol 476-478 ◽

pp. 1138-1141

Author(s):

Zhi Qiang Wei ◽

Qiang Wei ◽

Li Gang Liu ◽

Hua Yang ◽

Xiao Juan Wu

Keyword(s):

Crystal Structure ◽

Particle Size ◽

Hydrothermal Method ◽

Ag Nanoparticles ◽

Average Particle Size ◽

Average Particle ◽

Face Centered Cubic ◽

Selected Area Electron Diffraction ◽

Transmission Electron ◽

Face Centered

Ag nanoparticles were successfully synthesized by hydrothermal method under the polyol system combined with traces of sodium chloride, Silver nitrate(AgNO3) and polyvinylpyrrolidone (PVP) acted as the silver source and dispersant respectively. The samples by this process were characterized via X-ray powder diffraction (XRD), Brunauer–Emmett–Teller (BET) adsorption equation, transmission electron microscopy (TEM) and the corresponding selected area electron diffraction (SAED) to determine the chemical composition, particle size, crystal structure and morphology. The experiment results indicate that the crystal structure of the samples is face centered cubic (FCC) structure as same as the bulk materials, The specific surface area is 24 m2/g, the particle size distribution ranging from10 to 50 nm, with an average particle size about 26 nm obtained by TEM and confirmed by XRD and BET results.

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