Electrocrystallizations of copper on glassy carbon in CuCl<sub>2</sub> silica sol and aqueous solutions

引用本文: Yan Yan Feng, Min Gu, Yun Gui Du. Electrocrystallizations of copper on glassy carbon in CuCl₂ silica sol and aqueous solutions[J]. Chinese Chemical Letters, 2012, 23(2): 249-252. doi: 10.1016/j.cclet.2011.11.020 shu

Citation: Yan Yan Feng, Min Gu, Yun Gui Du. Electrocrystallizations of copper on glassy carbon in CuCl₂ silica sol and aqueous solutions[J]. Chinese Chemical Letters, 2012, 23(2): 249-252. doi: 10.1016/j.cclet.2011.11.020 shu

Electrocrystallizations of copper on glassy carbon in CuCl₂ silica sol and aqueous solutions

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
基金项目:
This work was supported by Academic Program of Natural Science Foundation Project of CQ CSTC (No. 2008BC4003) and the Foundation of State Key Laboratory of Physical Chemistry of Solid Surfaces of Xiamen University (No. 2007).

摘要: 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 (i_DL) 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 i_DLDL may be resulted from the adsorption of chloride ions on the electrode surface.

关键词:

English

Electrocrystallizations of copper on glassy carbon in CuCl₂ silica sol and aqueous solutions

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
Received Date: 30 August 2011
Fund Project:
This work was supported by Academic Program of Natural Science Foundation Project of CQ CSTC (No. 2008BC4003) and the Foundation of State Key Laboratory of Physical Chemistry of Solid Surfaces of Xiamen University (No. 2007).

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 (i_DL) 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 i_DLDL may be resulted from the adsorption of chloride ions on the electrode surface.

Key words:

扫一扫看文章

计量

PDF下载量: 0
文章访问数: 807
HTML全文浏览量: 6

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Electrocrystallizations of copper on glassy carbon in CuCl₂ silica sol and aqueous solutions

English

Electrocrystallizations of copper on glassy carbon in CuCl₂ silica sol and aqueous solutions

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

计量

通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

Electrocrystallizations of copper on glassy carbon in CuCl2 silica sol and aqueous solutions

English

Electrocrystallizations of copper on glassy carbon in CuCl2 silica sol and aqueous solutions

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

计量

文章相关

通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

Electrocrystallizations of copper on glassy carbon in CuCl₂ silica sol and aqueous solutions

Electrocrystallizations of copper on glassy carbon in CuCl₂ silica sol and aqueous solutions

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs