Observation of Sulfur on the Surface of Giant Aurothiol Nanoclusters

C. Gutierrez-Wing; J. A. Ascencio; W. De la Cruz; L. Cota; M. Jose-Yacaman

doi:10.1166/jnn.2002.069

Observation of Sulfur on the Surface of Giant Aurothiol Nanoclusters

C. Gutierrez-Wing, J. A. Ascencio, W. De la Cruz, L. Cota, M. Jose-Yacaman

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

2 Scopus citations

Abstract

We report the study of aurothiol nanoclusters using high-resolution electron microscopy, energy loss spectroscopy, X-ray photoelectron spectroscopy, Auger spectroscopy, and microscopy. It is concluded that the sulfur atoms are located on the surface of the gold nanoparticles in both (100) and (111) microfacets. The X-ray photoelectron spectroscopy data show that there is a Au-Au bond as well as a Au-S bond. Auger depth profile measurements made by sputtering of the nanoparticles corroborates that the sulfur is located on the surface of the nanoparticle. Quantitative Auger analysis indicates a ratio Au/S between ≈1.79 and 1.98.

Original language	English (US)
Pages (from-to)	101-105
Number of pages	5
Journal	Journal of Nanoscience and Nanotechnology
Volume	2
Issue number	1
DOIs	https://doi.org/10.1166/jnn.2002.069
State	Published - 2002
Externally published	Yes

Keywords

Auger analysis
Aurothiol nanoclusters
EELS
HREM
Microscopy
Sulfur
XPS

ASJC Scopus subject areas

Bioengineering
General Chemistry
Biomedical Engineering
General Materials Science
Condensed Matter Physics

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title = "Observation of Sulfur on the Surface of Giant Aurothiol Nanoclusters",

abstract = "We report the study of aurothiol nanoclusters using high-resolution electron microscopy, energy loss spectroscopy, X-ray photoelectron spectroscopy, Auger spectroscopy, and microscopy. It is concluded that the sulfur atoms are located on the surface of the gold nanoparticles in both (100) and (111) microfacets. The X-ray photoelectron spectroscopy data show that there is a Au-Au bond as well as a Au-S bond. Auger depth profile measurements made by sputtering of the nanoparticles corroborates that the sulfur is located on the surface of the nanoparticle. Quantitative Auger analysis indicates a ratio Au/S between ≈1.79 and 1.98.",

keywords = "Auger analysis, Aurothiol nanoclusters, EELS, HREM, Microscopy, Sulfur, XPS",

author = "C. Gutierrez-Wing and Ascencio, \{J. A.\} and \{De la Cruz\}, W. and L. Cota and M. Jose-Yacaman",

year = "2002",

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T1 - Observation of Sulfur on the Surface of Giant Aurothiol Nanoclusters

AU - Gutierrez-Wing, C.

AU - Ascencio, J. A.

AU - De la Cruz, W.

AU - Cota, L.

AU - Jose-Yacaman, M.

PY - 2002

Y1 - 2002

N2 - We report the study of aurothiol nanoclusters using high-resolution electron microscopy, energy loss spectroscopy, X-ray photoelectron spectroscopy, Auger spectroscopy, and microscopy. It is concluded that the sulfur atoms are located on the surface of the gold nanoparticles in both (100) and (111) microfacets. The X-ray photoelectron spectroscopy data show that there is a Au-Au bond as well as a Au-S bond. Auger depth profile measurements made by sputtering of the nanoparticles corroborates that the sulfur is located on the surface of the nanoparticle. Quantitative Auger analysis indicates a ratio Au/S between ≈1.79 and 1.98.

AB - We report the study of aurothiol nanoclusters using high-resolution electron microscopy, energy loss spectroscopy, X-ray photoelectron spectroscopy, Auger spectroscopy, and microscopy. It is concluded that the sulfur atoms are located on the surface of the gold nanoparticles in both (100) and (111) microfacets. The X-ray photoelectron spectroscopy data show that there is a Au-Au bond as well as a Au-S bond. Auger depth profile measurements made by sputtering of the nanoparticles corroborates that the sulfur is located on the surface of the nanoparticle. Quantitative Auger analysis indicates a ratio Au/S between ≈1.79 and 1.98.

KW - Auger analysis

KW - Aurothiol nanoclusters

KW - EELS

KW - HREM

KW - Microscopy

KW - Sulfur

KW - XPS

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Observation of Sulfur on the Surface of Giant Aurothiol Nanoclusters

Abstract

Keywords

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