Preparation of highly positively charged silver nanoballs and their stability

Tetsu Yonezawa; Shin Ya Onoue; Nobuo Kimizuka

doi:10.1021/la000186f

Preparation of highly positively charged silver nanoballs and their stability

Tetsu Yonezawa, Shin Ya Onoue, Nobuo Kimizuka

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

81 Citations (Scopus)

Abstract

Reduction of AgNO₃ by sodium borohydride in the presence of quaternary ammonium disulfide gave a stable aqueous dispersion of silver nanoballs. The obtained Ag nanoballs showed a strong plasmon absorption peak, indicating that they consisted of metal Ag, although the counteranion of the stabilizer was Br^-. They are obtainable in a powder form by reprecipitation and can be kept without any change under air. Redispersibility of the obtained powder into water was high, and even in slightly acidic condition, they can be kept stably for more than a week. The stabilization mechanism is also discussed.

Original language	English
Pages (from-to)	5218-5220
Number of pages	3
Journal	Langmuir
Volume	16
Issue number	12
DOIs	https://doi.org/10.1021/la000186f
Publication status	Published - Jun 13 2000

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la000186f

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abstract = "Reduction of AgNO3 by sodium borohydride in the presence of quaternary ammonium disulfide gave a stable aqueous dispersion of silver nanoballs. The obtained Ag nanoballs showed a strong plasmon absorption peak, indicating that they consisted of metal Ag, although the counteranion of the stabilizer was Br-. They are obtainable in a powder form by reprecipitation and can be kept without any change under air. Redispersibility of the obtained powder into water was high, and even in slightly acidic condition, they can be kept stably for more than a week. The stabilization mechanism is also discussed.",

author = "Tetsu Yonezawa and Onoue, {Shin Ya} and Nobuo Kimizuka",

year = "2000",

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T1 - Preparation of highly positively charged silver nanoballs and their stability

AU - Yonezawa, Tetsu

AU - Onoue, Shin Ya

AU - Kimizuka, Nobuo

PY - 2000/6/13

Y1 - 2000/6/13

N2 - Reduction of AgNO3 by sodium borohydride in the presence of quaternary ammonium disulfide gave a stable aqueous dispersion of silver nanoballs. The obtained Ag nanoballs showed a strong plasmon absorption peak, indicating that they consisted of metal Ag, although the counteranion of the stabilizer was Br-. They are obtainable in a powder form by reprecipitation and can be kept without any change under air. Redispersibility of the obtained powder into water was high, and even in slightly acidic condition, they can be kept stably for more than a week. The stabilization mechanism is also discussed.

AB - Reduction of AgNO3 by sodium borohydride in the presence of quaternary ammonium disulfide gave a stable aqueous dispersion of silver nanoballs. The obtained Ag nanoballs showed a strong plasmon absorption peak, indicating that they consisted of metal Ag, although the counteranion of the stabilizer was Br-. They are obtainable in a powder form by reprecipitation and can be kept without any change under air. Redispersibility of the obtained powder into water was high, and even in slightly acidic condition, they can be kept stably for more than a week. The stabilization mechanism is also discussed.

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JF - Langmuir

IS - 12

ER -

Preparation of highly positively charged silver nanoballs and their stability

Abstract

All Science Journal Classification (ASJC) codes

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