Chemical transformation of au-tipped CdS nanorods into AuS/Cd core/shell particles by electron beam irradiation

Marijn A. Van Huis; Albert Figuerola; Changming Fang; Armand Béché; Henny W. Zandbergen; Liberato Manna

doi:10.1021/nl2030823

Chemical transformation of au-tipped CdS nanorods into AuS/Cd core/shell particles by electron beam irradiation

Marijn A. Van Huis^*, Albert Figuerola, Changming Fang, Armand Béché, Henny W. Zandbergen, Liberato Manna

^*Corresponding author for this work

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

34 Scopus citations

Abstract

We demonstrate that electron irradiation of colloidal CdS nanorods carrying Au domains causes their evolution into AuS/Cd core/shell nanoparticles as a result of a concurrent chemical and morphological transformation. The shrinkage of the CdS nanorods and the growth of the Cd shell around the Au tips are imaged in real time, while the displacement of S atoms from the CdS nanorod to the Au domains is evidenced by high-sensitivity energy-dispersive X-ray (EDX) spectroscopy. The various nanodomains display different susceptibility to the irradiation, which results in nanoconfigurations that are very different from those obtained after thermal annealing. Such physical manipulations of colloidal nanocrystals can be exploited as a tool to access novel nanocrystal heterostructures.

Original language	English (US)
Pages (from-to)	4555-4561
Number of pages	7
Journal	Nano Letters
Volume	11
Issue number	11
DOIs	https://doi.org/10.1021/nl2030823
State	Published - Nov 9 2011
Externally published	Yes

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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title = "Chemical transformation of au-tipped CdS nanorods into AuS/Cd core/shell particles by electron beam irradiation",

abstract = "We demonstrate that electron irradiation of colloidal CdS nanorods carrying Au domains causes their evolution into AuS/Cd core/shell nanoparticles as a result of a concurrent chemical and morphological transformation. The shrinkage of the CdS nanorods and the growth of the Cd shell around the Au tips are imaged in real time, while the displacement of S atoms from the CdS nanorod to the Au domains is evidenced by high-sensitivity energy-dispersive X-ray (EDX) spectroscopy. The various nanodomains display different susceptibility to the irradiation, which results in nanoconfigurations that are very different from those obtained after thermal annealing. Such physical manipulations of colloidal nanocrystals can be exploited as a tool to access novel nanocrystal heterostructures.",

author = "{Van Huis}, {Marijn A.} and Albert Figuerola and Changming Fang and Armand B{\'e}ch{\'e} and Zandbergen, {Henny W.} and Liberato Manna",

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doi = "10.1021/nl2030823",

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T1 - Chemical transformation of au-tipped CdS nanorods into AuS/Cd core/shell particles by electron beam irradiation

AU - Van Huis, Marijn A.

AU - Figuerola, Albert

AU - Fang, Changming

AU - Béché, Armand

AU - Zandbergen, Henny W.

AU - Manna, Liberato

PY - 2011/11/9

Y1 - 2011/11/9

N2 - We demonstrate that electron irradiation of colloidal CdS nanorods carrying Au domains causes their evolution into AuS/Cd core/shell nanoparticles as a result of a concurrent chemical and morphological transformation. The shrinkage of the CdS nanorods and the growth of the Cd shell around the Au tips are imaged in real time, while the displacement of S atoms from the CdS nanorod to the Au domains is evidenced by high-sensitivity energy-dispersive X-ray (EDX) spectroscopy. The various nanodomains display different susceptibility to the irradiation, which results in nanoconfigurations that are very different from those obtained after thermal annealing. Such physical manipulations of colloidal nanocrystals can be exploited as a tool to access novel nanocrystal heterostructures.

AB - We demonstrate that electron irradiation of colloidal CdS nanorods carrying Au domains causes their evolution into AuS/Cd core/shell nanoparticles as a result of a concurrent chemical and morphological transformation. The shrinkage of the CdS nanorods and the growth of the Cd shell around the Au tips are imaged in real time, while the displacement of S atoms from the CdS nanorod to the Au domains is evidenced by high-sensitivity energy-dispersive X-ray (EDX) spectroscopy. The various nanodomains display different susceptibility to the irradiation, which results in nanoconfigurations that are very different from those obtained after thermal annealing. Such physical manipulations of colloidal nanocrystals can be exploited as a tool to access novel nanocrystal heterostructures.

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JO - Nano Letters

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Chemical transformation of au-tipped CdS nanorods into AuS/Cd core/shell particles by electron beam irradiation

Abstract

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