Size-selective electrodeposition of meso-scale metal particles: a general method

被引：136

作者：

Liu, H

Favier, F

Ng, K

Zach, MP

Penner, RM ^{[1
]}

机构：

[1] Univ Calif Irvine, Inst Surface & Interface Sci, Irvine, CA 92679 USA

[2] Univ Calif Irvine, Dept Chem, Irvine, CA 92679 USA

[3] Univ Montpellier 2, CNRS, UMR 5072, F-34095 Montpellier, France

来源：

ELECTROCHIMICA ACTA | 2001年 / 47卷 / 05期

基金：

美国国家科学基金会;

关键词：

electrodeposition; nano and micro particles; slow-growth method;

D O I：

10.1016/S0013-4686(01)00747-2

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Metal nano- and microparticles that are narrowly dispersed in diameter can be electrodeposited on graphite basal plane surfaces using the two-step method: First, a voltage pulse with a duration of 5 ms and an overpotential, eta = - 500 mV was used to nucleate metal particles on the graphite surface. Then, a growth pulse with an overpotential, ij, of - 20 to - 250 mV was applied to grow the metal particles obtained in step 1 to the desired final diameter. For a variety of metals, including silver, gold, platinum, molybdenum, and nickel, this 'slow-growth' method yielded dispersions of particles ranging in diameter from 50 nm to 2 mum having a relative standard deviation (RSDdia = sigma (dia)/< dia >) as low as 7%. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：671 / 677

页数：7