Electrocrystallizations of copper on glassy carbon in CuCl2 silica sol and aqueous solutions |
| |
Authors: | Yan Yan Feng Min Gu Yun Gui Du |
| |
Institution: | State and Local Joint Engineering Laboratory of Methane Drainage in Complex Coal Gas Seam, State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China |
| |
Abstract: | Electrocrystallizations of copper from both CuCl2 silica sol and aqueous solutions were studied by the chronoamperometry technique. It was found that current density contributions of the double-layer charging (iDL) in current-time transients (CTTs) from both of the solutions were large. An adsorption-nucleation based model was proposed to analyze quantitatively the CTTs, by which copper electrocrystallization mechanism was characterized as progressive nucleation with 3D growth (3DP) under diffusion control. The diffusion coefficient of copper ions and the AN∝ products in aqueous solutions were larger than that in silica sols, which indicated that copper nucleation was inhibited in sol solution. The large iDLmay be resulted from the adsorption of chloride ions on the electrode surface. |
| |
Keywords: | " target="_blank">2zz')" href="#">   CuCl2 Silica sol Aqueous Current-time transients (CTTs) Copper Electrocrystallization |
本文献已被 CNKI ScienceDirect 等数据库收录! |
| 点击此处可从《中国化学快报》浏览原始摘要信息 |
| 点击此处可从《中国化学快报》下载免费的PDF全文 |