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Acta Physico-Chimica Sinica  2002, Vol. 18 Issue (10): 956-960    DOI: 10.3866/PKU.WHXB20021019
Note     
Mechanism of Na2SeO3 Reduction and Adsorption on Fe Electrode
Fu De-Xue;Miao Juan;Wang Yun-Yan;Shu Yu-De
Department of Chemical Engineering, Jiaozuo University, Jiaozuo 454100;Jiaozuo Technology College, Jiaozuo 454100;Department of Metallurgical Science and Engineering, Central South University, Changsha 410083
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Abstract  It is found by experiment that Na2SeO3 can improve the current efficiency remarkably. The reaction mechanism of the promotion of the current efficiency of electro-deposition of Zn-Mn alloy by the addition of Na2SeO3 to the cathode has been studied by cyclic voltammetry, linear sweep voltammetry, chronopotentiometry and electro-chemical impedance methods. It is found that under the conditions of Zn-Mn alloys electro-deposition, Na2SeO3 is reduced to Se32-, which is adsorbed on the surface of cathode, because of the adsorption of Se32-, the adsorption of H is prevented, the partial potential curve of hydrogen moves to negative region about 0.2 V in the presence of 0.1 g•L-1 Na2SeO3.

Key wordsNa2SeO3      Reduce and adsorption      Mechanism     
Received: 15 January 2002      Published: 15 October 2002
Corresponding Authors: Miao Juan     E-mail: miaojuan@jzit.edu.cn
Cite this article:

Fu De-Xue;Miao Juan;Wang Yun-Yan;Shu Yu-De. Mechanism of Na2SeO3 Reduction and Adsorption on Fe Electrode. Acta Physico-Chimica Sinica, 2002, 18(10): 956-960.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20021019     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2002/V18/I10/956

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