Structure of Solution of Colloid and Hydrogen Bonding Fluid Near a Semipermeable Membrane  

作　　者：ZHAO Meng CHEN Hanfei GU Fang WANG Haijun 

机构地区：[1]College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P. R. China [2]Chemical Biology Key Laboratory of Hebei Province, Hebei University, Baoding 071002, P. R. China [3]Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding 071002, P. R. China

出　　处：《Chemical Research in Chinese Universities》2017年第2期248-254,共7页高等学校化学研究（英文版）

摘　　要：The local fluid structure of a solution consisting of colloid particles and hydrogen bonding（HB） fluid se-parated from pure solvent by a semipermeable membrane was investigated, where the colloid particles and HB fluidserve as solute and solvent, respectively. In this paper, the semipermeable membrane allows the passage of solventmolecules but not solute particles, and therefore, it provides a nano-confinement for colloid particles. The densityprofiles of the two species near the semipermeable membrane were determined via density functional theory（DFT）for classical fluids. Based on the predicted density profiles under various conditions, the effects of HB strength, func-tionality, total bulk density, density fraction and the size ratio of two species on the fluid structure were discussed. Asan application, the osmotic pressures of the system were also presented. It is shown that the local structure andosmotic pressure can be efficiently regulated by these factors due to the competition between the excluded volumeinteractions and the FIB interaction. The present results are expected to be helpful to study the osmotic phenomenaand relevant problems on the nanoscale.

关 键 词：Hydrogen BONDING FLUID Semipermeable MEMBRANE OSMOTIC pressure Density functional theory 

分 类 号：O[理学]