Electrodeposition of bismuth from nitric acid electrolyte

被引：82

作者：

Sandnes, E. ^{[1
]}

Williams, M. E. ^{[1
]}

Bertocci, U. ^{[1
]}

Vaudin, M. D. ^{[1
]}

Stafford, G. R. ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Mat Sci & Engn Lab, Gaithersburg, MD 20899 USA

来源：

ELECTROCHIMICA ACTA | 2007年 / 52卷 / 21期

关键词：

electrodeposition; bismuth; nucleation; texture; thin film; SCANNING-TUNNELING-MICROSCOPY; QUARTZ-CRYSTAL MICROBALANCE; X-RAY-SCATTERING; FORMIC-ACID; LARGE MAGNETORESISTANCE; MASS SENSITIVITY; BI; AU(111); FILMS; POLYCRYSTALLINE;

D O I：

10.1016/j.electacta.2007.04.002

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrodeposition of Bi from acidic nitrate solution was examined. Bismuth deposition was determined to be quasi-reversible on Au, with a current efficiency of 100%, based on integration of deposition and stripping voltammetric waves. No interference from nitrate reduction was found on Bi and Au, whereas nitrate reduction occurred on W and Cu electrodes. Analysis of current-time transients clearly shows nucleation on Au to be instantaneous. Field emission SEM revealed nodular deposits with moderate surface roughness. Nodule size varied from 1 to 5 mu m depending on deposition potential and deposit thickness. X-ray diffraction (XRD) patterns for all deposits were indexed to rhombohedral bismuth. The deposits showed fairly strong (012) crystallographic texture at high deposition overpotentials. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：6221 / 6228

页数：8