Mechanism of Sulfur Inclusion in Soft Gold Electrodeposited from the Thiosulfate-Sulfite Bath

T. Osaka; M. Kato; J. Sato; K. Yoshizawa; T. Homma; Y. Okinaka; O. Yoshioka

doi:10.1149/1.1399276

Mechanism of Sulfur Inclusion in Soft Gold Electrodeposited from the Thiosulfate-Sulfite Bath

T. Osaka^*, M. Kato, J. Sato, K. Yoshizawa, T. Homma, Y. Okinaka, O. Yoshioka

^*Corresponding author for this work

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

43 Citations (Scopus)

Abstract

The hardness of the soft gold electrodeposited from the thiosulfate-sulfite mixed ligand with which we developed recently, has previously been found to increase with increasing sulfur content of the gold deposit. In the present study the mechanism of the sulfur inclusion was investigated by analyzing for sulfur gold deposits produced under various experimental conditions and also by observing weight gains resulting from the adsorption of sulfur-containing species on gold using the quartz crystal microbalance (QCM) technique. The results led us to conclude that the origin of the included sulfur is primarily the adsorbed Au(I)-thiosulfate species, (Au ₂S ₂O ₃) _ads, formed as an intermediate in the gold deposition reaction.

Original language	English
Pages (from-to)	C659-C662
Journal	Journal of the Electrochemical Society
Volume	148
Issue number	10
DOIs	https://doi.org/10.1149/1.1399276
Publication status	Published - 2001 Oct 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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abstract = "The hardness of the soft gold electrodeposited from the thiosulfate-sulfite mixed ligand with which we developed recently, has previously been found to increase with increasing sulfur content of the gold deposit. In the present study the mechanism of the sulfur inclusion was investigated by analyzing for sulfur gold deposits produced under various experimental conditions and also by observing weight gains resulting from the adsorption of sulfur-containing species on gold using the quartz crystal microbalance (QCM) technique. The results led us to conclude that the origin of the included sulfur is primarily the adsorbed Au(I)-thiosulfate species, (Au 2S 2O 3) ads, formed as an intermediate in the gold deposition reaction.",

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T1 - Mechanism of Sulfur Inclusion in Soft Gold Electrodeposited from the Thiosulfate-Sulfite Bath

AU - Osaka, T.

AU - Kato, M.

AU - Sato, J.

AU - Yoshizawa, K.

AU - Homma, T.

AU - Okinaka, Y.

AU - Yoshioka, O.

PY - 2001/10/1

Y1 - 2001/10/1

N2 - The hardness of the soft gold electrodeposited from the thiosulfate-sulfite mixed ligand with which we developed recently, has previously been found to increase with increasing sulfur content of the gold deposit. In the present study the mechanism of the sulfur inclusion was investigated by analyzing for sulfur gold deposits produced under various experimental conditions and also by observing weight gains resulting from the adsorption of sulfur-containing species on gold using the quartz crystal microbalance (QCM) technique. The results led us to conclude that the origin of the included sulfur is primarily the adsorbed Au(I)-thiosulfate species, (Au 2S 2O 3) ads, formed as an intermediate in the gold deposition reaction.

AB - The hardness of the soft gold electrodeposited from the thiosulfate-sulfite mixed ligand with which we developed recently, has previously been found to increase with increasing sulfur content of the gold deposit. In the present study the mechanism of the sulfur inclusion was investigated by analyzing for sulfur gold deposits produced under various experimental conditions and also by observing weight gains resulting from the adsorption of sulfur-containing species on gold using the quartz crystal microbalance (QCM) technique. The results led us to conclude that the origin of the included sulfur is primarily the adsorbed Au(I)-thiosulfate species, (Au 2S 2O 3) ads, formed as an intermediate in the gold deposition reaction.

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Mechanism of Sulfur Inclusion in Soft Gold Electrodeposited from the Thiosulfate-Sulfite Bath

Abstract

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