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Title: Facet control of gold nanorods

Abstract

While great success has been achieved in fine-tuning the aspect ratios and thereby the plasmon resonances of cylindrical Au nanorods, facet control with atomic level precision on the highly curved nanorod surfaces has long been a significantly more challenging task. The intrinsic structural complexity and lack of precise facet control of the nanorod surfaces remain the major obstacles for the atomic-level elucidation of the structure–property relationships that underpin the intriguing catalytic performance of Au nanorods. Here we demonstrate that the facets of single-crystalline Au nanorods can be precisely tailored using cuprous ions and cetyltrimethylammonium bromide as a unique pair of surface capping competitors to guide the particle geometry evolution during nanorod overgrowth. By deliberately maneuvering the competition between cuprous ions and cetyltrimethylammonium bromide, we have been able to create, in a highly controllable and selective manner, an entire family of nanorod-derived anisotropic multifaceted geometries whose surfaces are enclosed by specific types of well-defined high-index and low-index facets. This facet-controlled nanorod overgrowth approach also allows us to fine-tune the particle aspect ratios while well-preserving all the characteristic facets and geometric features of the faceted Au nanorods. Furthermore, taking full advantage of the combined structural and plasmonic tunability, we have further studiedmore » the facet-dependent heterogeneous catalysis on well-faceted Au nanorods using surface-enhanced Raman spectroscopy as an ultrasensitive spectroscopic tool with unique time-resolving and molecular finger-printing capabilities.« less

Authors:
 [1];  [2];  [1];  [1];  [1];  [2];  [1]
+ Show Author Affiliations
  1. Univ. of South Carolina, Columbia, SC (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1246784
Report Number(s):
BNL-111794-2016-JA
Journal ID: ISSN 1936-0851; KC0403020
Grant/Contract Number:  
SC00112704
Resource Type:
Accepted Manuscript
Journal Name:
ACS Nano
Additional Journal Information:
Journal Volume: 10; Journal Issue: 2; Journal ID: ISSN 1936-0851
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; nanorod; gold; plasmonics; Center for Functional Nanomaterials gold nanorods; high-index facets; low-index facets; overgrowth; plasmon resonances; nanocatalysis; surface-enhanced Raman spectroscopy

Citation Formats

Zhang, Qingfeng, Han, Lili, Jing, Hao, Blom, Douglas A., Lin, Ye, Xin, Huolin L., and Wang, Hui. Facet control of gold nanorods. United States: N. p., 2016. Web. doi:10.1021/acsnano.6b00258.
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Zhang, Qingfeng, Han, Lili, Jing, Hao, Blom, Douglas A., Lin, Ye, Xin, Huolin L., & Wang, Hui. Facet control of gold nanorods. United States. https://doi.org/10.1021/acsnano.6b00258
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Zhang, Qingfeng, Han, Lili, Jing, Hao, Blom, Douglas A., Lin, Ye, Xin, Huolin L., and Wang, Hui. Thu . "Facet control of gold nanorods". United States. https://doi.org/10.1021/acsnano.6b00258. https://www.osti.gov/servlets/purl/1246784.
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@article{osti_1246784,
title = {Facet control of gold nanorods},
author = {Zhang, Qingfeng and Han, Lili and Jing, Hao and Blom, Douglas A. and Lin, Ye and Xin, Huolin L. and Wang, Hui},
abstractNote = {While great success has been achieved in fine-tuning the aspect ratios and thereby the plasmon resonances of cylindrical Au nanorods, facet control with atomic level precision on the highly curved nanorod surfaces has long been a significantly more challenging task. The intrinsic structural complexity and lack of precise facet control of the nanorod surfaces remain the major obstacles for the atomic-level elucidation of the structure–property relationships that underpin the intriguing catalytic performance of Au nanorods. Here we demonstrate that the facets of single-crystalline Au nanorods can be precisely tailored using cuprous ions and cetyltrimethylammonium bromide as a unique pair of surface capping competitors to guide the particle geometry evolution during nanorod overgrowth. By deliberately maneuvering the competition between cuprous ions and cetyltrimethylammonium bromide, we have been able to create, in a highly controllable and selective manner, an entire family of nanorod-derived anisotropic multifaceted geometries whose surfaces are enclosed by specific types of well-defined high-index and low-index facets. This facet-controlled nanorod overgrowth approach also allows us to fine-tune the particle aspect ratios while well-preserving all the characteristic facets and geometric features of the faceted Au nanorods. Furthermore, taking full advantage of the combined structural and plasmonic tunability, we have further studied the facet-dependent heterogeneous catalysis on well-faceted Au nanorods using surface-enhanced Raman spectroscopy as an ultrasensitive spectroscopic tool with unique time-resolving and molecular finger-printing capabilities.},
doi = {10.1021/acsnano.6b00258},
journal = {ACS Nano},
number = 2,
volume = 10,
place = {United States},
year = {Thu Jan 21 00:00:00 EST 2016},
month = {Thu Jan 21 00:00:00 EST 2016}
}
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