Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (11): 1776-1780.doi: 10.3866/PKU.WHXB20071123

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Study on the Interaction between Two Identical Parallel Plates with Iteration Method in Functional Theory

ZHOU Ming; WANG Zheng-Wu; XU Zu-Min   

  1. Department of Food Science&Technology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 201101, P. R. China; School of Chemical and Material Engineering , Southern Yangtze University, Wuxi 214122, Jiangsu Province, P. R. China
  • Received:2007-05-09 Revised:2007-06-14 Published:2007-11-01
  • Contact: WANG Zheng-Wu

Abstract: By introducing the functional theory into the calculation of electric double layer (EDL) interaction, the interaction energies of two identical parallel plates were calculated at 128, 77, and 25 mV potentials, respectively. Compared with the results from the Debye-Huckel (DH), Langmuir, and numerical methods, respectively, the results showed that DH and Langmuir methods were applicable just for the critical potentials, but the functional approach with quite accurate and simple analytic expression held true at any potential.

Key words: Interaction energy, Parallel plates, Electric double layer, Functional theory


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