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Microfluidic-based continuous flow formation of triangular silver nanoprisms with tunable surface plasmon resonance

Microfluidic-based continuous flow formation of triangular silver nanoprisms with tunable surface plasmon resonance
Microfluidic-based continuous flow formation of triangular silver nanoprisms with tunable surface plasmon resonance
Controlled synthesis of nanoparticles with desired geometries can provide a direct approach for the formation of nanomaterials with tuneable size/shape-dependent characteristics, vastly expanding their range of applications in catalysis, electronics and optics, biology and medicine. In this report, we demonstrate the development of a microfluidics-based process for the direct synthesis (without seed-mediated growth) of silver nanoprisms in a continuous flow format using a flow focusing microreactor, coupled with UV-Vis-NIR spectroscopy for real time monitoring of optical properties of the produced nanoprisms. By adjusting microfluidic conditions, the nanomaterial's absorbance spectral position and peak broadness can be fine-tuned. TEM analysis of the produced nanoparticles quantitatively correlates the characteristics of absorbance spectra with the shape/geometry of nanoparticles. Furthermore, faster kinetics for the formation of nanoparticles has been observed in the microreactor compared to those in traditional batch reactors, and the microreactor's capability of synthesising homogenous nanoparticles over a prolonged operation time is demonstrated.
2050-7526
7540-7546
Carboni, Michele
b5083518-f695-4409-8c0b-82ee410702a0
Capretto, Lorenzo
0f3586b5-1560-49c1-a76b-59e74ea600ef
Carugo, Dario
0a4be6cd-e309-4ed8-a620-20256ce01179
Stulz, Eugen
9a6c04cf-32ca-442b-9281-bbf3d23c622d
Zhang, Xunli
d7cf1181-3276-4da1-9150-e212b333abb1
Carboni, Michele
b5083518-f695-4409-8c0b-82ee410702a0
Capretto, Lorenzo
0f3586b5-1560-49c1-a76b-59e74ea600ef
Carugo, Dario
0a4be6cd-e309-4ed8-a620-20256ce01179
Stulz, Eugen
9a6c04cf-32ca-442b-9281-bbf3d23c622d
Zhang, Xunli
d7cf1181-3276-4da1-9150-e212b333abb1

Carboni, Michele, Capretto, Lorenzo, Carugo, Dario, Stulz, Eugen and Zhang, Xunli (2013) Microfluidic-based continuous flow formation of triangular silver nanoprisms with tunable surface plasmon resonance. Journal of Materials Chemistry C, 1 (45), 7540-7546. (doi:10.1039/C3TC31335B).

Record type: Article

Abstract

Controlled synthesis of nanoparticles with desired geometries can provide a direct approach for the formation of nanomaterials with tuneable size/shape-dependent characteristics, vastly expanding their range of applications in catalysis, electronics and optics, biology and medicine. In this report, we demonstrate the development of a microfluidics-based process for the direct synthesis (without seed-mediated growth) of silver nanoprisms in a continuous flow format using a flow focusing microreactor, coupled with UV-Vis-NIR spectroscopy for real time monitoring of optical properties of the produced nanoprisms. By adjusting microfluidic conditions, the nanomaterial's absorbance spectral position and peak broadness can be fine-tuned. TEM analysis of the produced nanoparticles quantitatively correlates the characteristics of absorbance spectra with the shape/geometry of nanoparticles. Furthermore, faster kinetics for the formation of nanoparticles has been observed in the microreactor compared to those in traditional batch reactors, and the microreactor's capability of synthesising homogenous nanoparticles over a prolonged operation time is demonstrated.

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More information

Accepted/In Press date: 23 September 2013
Published date: 25 September 2013
Organisations: Chemistry, Bioengineering Group, Mechatronics

Identifiers

Local EPrints ID: 357407
URI: https://eprints.soton.ac.uk/id/eprint/357407
ISSN: 2050-7526
PURE UUID: 620b1768-e5c0-4f94-871b-0fa758b1a9fb
ORCID for Eugen Stulz: ORCID iD orcid.org/0000-0002-5302-2276

Catalogue record

Date deposited: 03 Oct 2013 10:37
Last modified: 06 Jun 2018 12:40

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