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Comparison Study of the Electrochemical Behavior of Vanadate in NaOH and KOH Solutions
Liu, B.; Zheng, S. L.; Liu, H. B.; Du, H.; Wang, S. N.; Chen, D. H.; Bai, R. G.
2012
Conference NameInternational Conference on Chemical, Material and Metallurgical Engineering (ICCMME 2011)
Source PublicationADVANCES IN METALLURGICAL AND MINING ENGINEERING Book Series: Advanced Materials Research
Pages66-73
Conference DateDEC 23-25, 2011
Conference PlaceBeihai, PEOPLES R CHINA
PublisherTrans Tech Publications Ltd
AbstractThe redox behavior of vanadate ions at glassy carbon electrode in KOH solutions with concentration ranging from 0.1M to 1M had been studied using cyclic voltammetry method. It is found out that vanadate ions experience similar redox reactions in both NaOH and KOH solutions, which involve a single cathodic reduction and two oxidation reactions in one cyclic sweep. Nearly same currents are obtained under the same reaction conditions in both solutions. However, vanadate ions appear more difficult to be reduced in KOH solutions than in NaOH solutions, and the reduction reaction exhibits higher irreversibility. The reduction potential is influenced by vanadate ions concentration, and is more negative in KOH solutions. The reversibility of reduction reaction is greatly dependent on alkalinity, and the reduction potential obviously decreases with the increase of alkalinity in KOH solutions. However, only a slight decrease was observed in NaOH solution, which may be due to the fact that OH- exhibits higher activity in KOH solutions.
KeywordRedox Mechanisms Vanadium Noh And Koh Cyclic Voltammetry Vanadium Electrodes Aqueous-solutions Electroreduction Polarization Mechanism Ammonia Water Ions Cell Ph
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Indexed ByCPCI
Language英语
Document Type会议论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11167
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
Liu, B.,Zheng, S. L.,Liu, H. B.,et al. Comparison Study of the Electrochemical Behavior of Vanadate in NaOH and KOH Solutions[C]:Trans Tech Publications Ltd,2012:66-73.
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