Electrodeposition of bismuth from nitric acid electrolyte
Electrodeposition of bismuth from nitric acid electrolyte
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DOI：
10.1016/j.electacta.2007.04.002
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发表时间：
2007-06-20
影响因子：
6.6
通讯作者：
Stafford, G. R.
中科院分区：
文献类型：
--
作者：
Sandnes, E.;Williams, M. E.;Stafford, G. R.
研究了从酸性硝酸盐溶液中电沉积铋的工艺。铋沉积被确定为准可逆的Au，与100%的电流效率，基于沉积和溶出伏安波的整合。Bi和Au电极上未发现硝酸盐还原的干扰，而W和Cu电极上发生硝酸盐还原。电流-时间瞬变的分析清楚地表明Au上的成核是瞬时的。场发射扫描电镜显示结节状沉积物具有中等的表面粗糙度。根据沉积潜力和存款厚度，沉积物的大小从1到5 μ m不等。所有沉积物的X射线衍射（XRD）图案均为菱面体铋。在高沉积过电位下，镀层显示出较强的（012）织构。(c)2007爱思唯尔有限公司保留所有权利。
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.