Issue 7, 2013

Capping-agent-free synthesis of substrate-supported porous icosahedral gold nanoparticles

Abstract

We report a new capping-agent-free strategy for the synthesis of substrate-supported porous icosahedral Au nanoparticles (NPs) with rough naked surfaces, based on the crystallization from substrate-supported thin solution layers followed by solid-phase thermolysis. The plasmonic properties of icosahedral Au NPs have been studied using single particle dark-field scattering microscopy and spectroscopy. The two distinct localized surface plasmon resonance (LSPR) bands observed in the single particle dark-field spectra can be ascribed to the quadrupole resonance at ca. 425 nm and the size-dependent dipole resonance in the red region (645–708 nm). The unique rough naked surface, the facile synthesis, together with the ability to control the nanoparticle size and to vary the LSPR frequency in the red region, would make the substrate-supported porous icosahedral Au NPs promising on multiple levels in the applications of catalysis, ultrasensitive biosensors, and in surface-enhanced Raman scattering (SERS).

Graphical abstract: Capping-agent-free synthesis of substrate-supported porous icosahedral gold nanoparticles

Supplementary files

Article information

Article type
Paper
Submitted
09 Dec 2012
Accepted
30 Jan 2013
First published
06 Feb 2013

Nanoscale, 2013,5, 2983-2989

Capping-agent-free synthesis of substrate-supported porous icosahedral gold nanoparticles

J. H. Wu, Z. Guan, S. K. Yang, P. Yuan, Q. Xu and G. Q. Xu, Nanoscale, 2013, 5, 2983 DOI: 10.1039/C3NR34000G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements