物理化学学报 >> 2009, Vol. 25 >> Issue (05): 883-889.doi: 10.3866/PKU.WHXB20090511

研究论文 上一篇    下一篇

超重力场强化铅电沉积的规律与机理

王明涌 王志 郭占成   

  1. 中国科学院过程工程研究所, 多相复杂系统国家重点实验室, 北京 100190; 中国科学院研究生院, 北京 100049; 北京科技大学循环与生态冶金教育部重点实验室, 北京 100083
  • 收稿日期:2008-12-19 修回日期:2009-01-21 发布日期:2009-05-04
  • 通讯作者: 郭占成 E-mail:guozc@home.ipe.ac.cn

Regularity and Mechanism of Pb Electrodeposition Intensified by Super Gravity Field

WANG Ming-Yong, WANG Zhi, GUO Zhan-Cheng   

  1. State Key Laboratory of Mutiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China; Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China; Key Laboratory of Ecological & Recycle Metallurgy, Ministry of Education, University of Science and Technology Beijing, Beijing 100083, P. R. China
  • Received:2008-12-19 Revised:2009-01-21 Published:2009-05-04
  • Contact: GUO Zhan-Cheng E-mail:guozc@home.ipe.ac.cn

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摘要：

采用循环伏安法(CV)、线性扫描法(LSV)、计时电流法研究了超重力场(超重力系数和作用方向)对铅电沉积过程(包括欠电位沉积、本体沉积和析氢副反应)的影响. 结果表明, Pb(NO3)2溶液中, 在所有超重力条件下, 铅的本体沉积和欠电位沉积均得到一定程度的强化, 析氢副反应得到抑制; 当超重力作用方向为垂直背向时(VBD), 超重力对电沉积过程的强化程度最大; 在超重力场中对废水中的铅进行电化学处理后, 溶液中的残余Pb2+浓度要远远小于常重力条件下的Pb2+浓度.

关键词: 超重力, 电沉积, 析氢反应, 铅

Abstract:

The effects of super gravity field (super gravity coefficient and working direction) on the electrodeposition process of Pb (underpotential deposition, bulk deposition and hydrogen evolution reaction) were investigated by cyclic voltammetry (CV), linear sweep voltammetry (LSV) and chronoamperometry. Results indicated that, in Pb(NO3)2 aqueous solution, both the bulk deposition and the underpotential deposition of Pb2+ can be intensified under all super gravity conditions and the hydrogen evolution reaction is depressed. When the working direction of super gravity is in the vertical-back-direction (VBD), the largest effect of super gravity on the electrodeposition process is achieved. After electrolytic removal of Pb2+ from wastewater under super gravity field, the residual concentration of Pb2+ was much lower than that under the normal gravity condition.

Key words: Super gravity, Electrodeposition, Hydrogen evolution reaction, Pb

MSC2000: 

  • O646