Morphology-Controlled Growth of Crystalline Ag-Pt-Alloyed Shells onto Au Nanotriangles and Their Plasmonic Properties

Xiaobin Xie; Marijn A. van Huis; Alfons van Blaaderen

doi:10.1021/acs.jpcc.3c02897

Morphology-Controlled Growth of Crystalline Ag-Pt-Alloyed Shells onto Au Nanotriangles and Their Plasmonic Properties

Xiaobin Xie^*, Marijn A. van Huis, Alfons van Blaaderen^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

The surface plasmon resonance of noble-metal nanoparticles depends on nanoscale size, morphology, and composition, and provides great opportunities for applications in biomedicine, optoelectronics, (photo)catalysis, photovoltaics, and sensing. Here, we present the results of synthesizing ternary metallic or trimetallic nanoparticles, Au nanotriangles (Au NTs) with crystalline Ag-Pt alloyed shells, the morphology of which can be adjusted from a yolk-shell to a core-shell structure by changing the concentration of AgNO₃ or the concentration of Au NT seeds, while the shell thickness can be precisely controlled by adjusting the concentration of K₂PtCl₄. By monitoring the growth process with UV-vis spectra and scanning transmission electron microscopy (STEM), the shells on the Au NT-Ag-Pt yolk-shell nanoparticles were found to grow via a galvanic replacement synergistic route. The plasmonic properties of the as-synthesized nanoparticles were investigated by optical absorbance measurements.

Original language	English
Pages (from-to)	16052-16060
Number of pages	9
Journal	Journal of Physical Chemistry C
Volume	127
Issue number	32
DOIs	https://doi.org/10.1021/acs.jpcc.3c02897
Publication status	Published - 17 Aug 2023

Keywords

Epitaxial-growth
Gold nanorods
Hydrogen generation
Anisotropic growth
Single-particle
Nanostructures
Ternary
Nanoparticles
Pd
Nanoprisms

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@article{80935a923ffb497d82dcb9dd0c5e0bda,

title = "Morphology-Controlled Growth of Crystalline Ag-Pt-Alloyed Shells onto Au Nanotriangles and Their Plasmonic Properties",

abstract = "The surface plasmon resonance of noble-metal nanoparticles depends on nanoscale size, morphology, and composition, and provides great opportunities for applications in biomedicine, optoelectronics, (photo)catalysis, photovoltaics, and sensing. Here, we present the results of synthesizing ternary metallic or trimetallic nanoparticles, Au nanotriangles (Au NTs) with crystalline Ag-Pt alloyed shells, the morphology of which can be adjusted from a yolk-shell to a core-shell structure by changing the concentration of AgNO3 or the concentration of Au NT seeds, while the shell thickness can be precisely controlled by adjusting the concentration of K2PtCl4. By monitoring the growth process with UV-vis spectra and scanning transmission electron microscopy (STEM), the shells on the Au NT-Ag-Pt yolk-shell nanoparticles were found to grow via a galvanic replacement synergistic route. The plasmonic properties of the as-synthesized nanoparticles were investigated by optical absorbance measurements.",

keywords = "Epitaxial-growth, Gold nanorods, Hydrogen generation, Anisotropic growth, Single-particle, Nanostructures, Ternary, Nanoparticles, Pd, Nanoprisms",

author = "Xiaobin Xie and {van Huis}, {Marijn A.} and {van Blaaderen}, Alfons",

note = "Funding Information: X.X. and A.v.B. acknowledge financial support from EU H2020-MSCA-ITN-2015 project “MULTIMAT” (Project Number: 676045). Publisher Copyright: {\textcopyright} 2023 The Authors. Published by American Chemical Society.",

year = "2023",

month = aug,

day = "17",

doi = "10.1021/acs.jpcc.3c02897",

language = "English",

volume = "127",

pages = "16052--16060",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

number = "32",

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AU - Xie, Xiaobin

AU - van Huis, Marijn A.

AU - van Blaaderen, Alfons

N1 - Funding Information: X.X. and A.v.B. acknowledge financial support from EU H2020-MSCA-ITN-2015 project “MULTIMAT” (Project Number: 676045). Publisher Copyright: © 2023 The Authors. Published by American Chemical Society.

PY - 2023/8/17

Y1 - 2023/8/17

N2 - The surface plasmon resonance of noble-metal nanoparticles depends on nanoscale size, morphology, and composition, and provides great opportunities for applications in biomedicine, optoelectronics, (photo)catalysis, photovoltaics, and sensing. Here, we present the results of synthesizing ternary metallic or trimetallic nanoparticles, Au nanotriangles (Au NTs) with crystalline Ag-Pt alloyed shells, the morphology of which can be adjusted from a yolk-shell to a core-shell structure by changing the concentration of AgNO3 or the concentration of Au NT seeds, while the shell thickness can be precisely controlled by adjusting the concentration of K2PtCl4. By monitoring the growth process with UV-vis spectra and scanning transmission electron microscopy (STEM), the shells on the Au NT-Ag-Pt yolk-shell nanoparticles were found to grow via a galvanic replacement synergistic route. The plasmonic properties of the as-synthesized nanoparticles were investigated by optical absorbance measurements.

AB - The surface plasmon resonance of noble-metal nanoparticles depends on nanoscale size, morphology, and composition, and provides great opportunities for applications in biomedicine, optoelectronics, (photo)catalysis, photovoltaics, and sensing. Here, we present the results of synthesizing ternary metallic or trimetallic nanoparticles, Au nanotriangles (Au NTs) with crystalline Ag-Pt alloyed shells, the morphology of which can be adjusted from a yolk-shell to a core-shell structure by changing the concentration of AgNO3 or the concentration of Au NT seeds, while the shell thickness can be precisely controlled by adjusting the concentration of K2PtCl4. By monitoring the growth process with UV-vis spectra and scanning transmission electron microscopy (STEM), the shells on the Au NT-Ag-Pt yolk-shell nanoparticles were found to grow via a galvanic replacement synergistic route. The plasmonic properties of the as-synthesized nanoparticles were investigated by optical absorbance measurements.

KW - Epitaxial-growth

KW - Gold nanorods

KW - Hydrogen generation

KW - Anisotropic growth

KW - Single-particle

KW - Nanostructures

KW - Ternary

KW - Nanoparticles

KW - Pd

KW - Nanoprisms

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DO - 10.1021/acs.jpcc.3c02897

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SN - 1932-7447

VL - 127

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EP - 16060

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 32

ER -

Morphology-Controlled Growth of Crystalline Ag-Pt-Alloyed Shells onto Au Nanotriangles and Their Plasmonic Properties

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Keywords

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