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Citation: WANG Ming-Yong, WANG Zhi, GUO Zhan-Cheng. Regularity and Mechanism of Pb Electrodeposition Intensified by Super Gravity Field[J]. Acta Physico-Chimica Sinica, ;2009, 25(05): 883-889. doi: 10.3866/PKU.WHXB20090511 shu

Regularity and Mechanism of Pb Electrodeposition Intensified by Super Gravity Field

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

Corresponding author: WANG Zhi, GUO Zhan-Cheng, guozc@home.ipe.ac.cn
Received Date: 19 December 2008
Available Online: 10 March 2009

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.
- Super gravity,
- Electrodeposition,
- Hydrogen evolution reaction,
- Pb
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