Sonochemical preparation of ultrafine palladium particles

被引：171

作者：

Okitsu, K ^{[1
]}

Bandow, H ^{[1
]}

Maeda, Y ^{[1
]}

Nagata, Y ^{[1
]}

机构：

[1] UNIV OSAKA PREFECTURE,ADV SCI & TECHNOL RES INST,SAKAI,OSAKA 593,JAPAN

来源：

CHEMISTRY OF MATERIALS | 1996年 / 8卷 / 02期

关键词：

D O I：

10.1021/cm950285s

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Stable palladium particles were found to be readily prepared from aqueous solutions of palladium(II) chloride by ultrasonic irradiation (200 kHz, 6.0 W/cm(2)) in the presence of protective agents (RH). The average sizes of particles were 6 and 7.5 nm from solutions of 0.1 and 0.5 mM of Pd(II)-containing poly(vinylpyrrolidone), respectively. It is suggested that the main sonolytic reduction of Pd(II) takes place as shown in eqs 1-3: protective agents are subjected to pyrolysis at the interfacial region between cavitation bubbles and bulk solution, producing eventually reducing radicals, which may react with Pd(II) to form Pd(0).

引用

页码：315 / &

共 24 条

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