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Acta Physico-Chimica Sinica  2008, Vol. 24 Issue (09): 1724-1728    DOI: 10.3866/PKU.WHXB20080935
Note     
Inhibition Action and Adsorption Behavior of Environment-Friendly Inhibitor Poly-Aspartate on Copper
XU Qun-Jie; ZHU Lv-Jun; CAO Wei-Min; WAN Zong-Yue; ZHOU Guo-Ding; LIN Chang-Jian
Department of Environment Engineering, Shanghai University of Electric Power, Shanghai 200090, P. R. China; Department of Chemistry, Shanghai University, Shanghai 200444, P. R. China; State Key Laboratory of Solid Surface Physical Chemistry, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
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Abstract  The inhibition action and adsorption behavior of an environment-friendly inhibitor poly-aspartate (PASP) on copper in aqueous NaCl (0.02%) solution were investigated by means of electrochemical techniques. The results indicated that the best inhibition efficiency of PASP was 78.3% with the concentration of 15 mg·L-1 at 20 ℃. The adsorption of PASP prevented Cu from being corroded and PASP was an anodic inhibitor. The inhibition efficiency of PASP decreased with the increase in solution temperature, it decreased to 40.4% at 50 ℃. The adsorption behavior of PASP followed Langmuir isotherm, it was spontaneous and exothermic, and belonged to chemical adsorption.

Key wordsInhibitor      PASP      Adsorption      Copper      AC impendence     
Received: 25 February 2008      Published: 24 July 2008
MSC2000:  O646.6  
Corresponding Authors: XU Qun-Jie     E-mail: xuqunjie@shiep.edu.cn
Cite this article:

XU Qun-Jie; ZHU Lv-Jun; CAO Wei-Min; WAN Zong-Yue; ZHOU Guo-Ding; LIN Chang-Jian. Inhibition Action and Adsorption Behavior of Environment-Friendly Inhibitor Poly-Aspartate on Copper. Acta Physico-Chimica Sinica, 2008, 24(09): 1724-1728.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20080935     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2008/V24/I09/1724

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