Free energy of adsorption of water and calcium on the {10(1)over-bar-4} calcite surface

被引:64
作者
Kerisit, S [1 ]
Parker, SC [1 ]
机构
[1] Univ Bath, Dept Chem, Bath BA2 7AY, Avon, England
基金
英国自然环境研究理事会;
关键词
D O I
10.1039/b311928a
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Molecular dynamics simulations of the calcite-water interface have shown that the free energy of adsorption of water is relatively small compared to the previously calculated enthalpy of adsorption implying a large entropy change and that the free energy profile of a calcium adsorbing on the surface correlates with the solvent density; these calculations allow us to begin to address the rates of adsorption and desorption which are essential for studying growth and dissolution.
引用
收藏
页码:52 / 53
页数:2
相关论文
共 12 条
[1]  
BURGESS J, 1988, IONS SOLUTION BASIC
[2]   Molecular-scale density oscillations in water adjacent to a mica surface [J].
Cheng, L ;
Fenter, P ;
Nagy, KL ;
Schlegel, ML ;
Sturchio, NC .
PHYSICAL REVIEW LETTERS, 2001, 87 (15) :156103-156103
[3]   Atomistic computer simulation of the clay-fluid interface in colloidal laponite [J].
de Carvalho, RJFL ;
Skipper, NT .
JOURNAL OF CHEMICAL PHYSICS, 2001, 114 (08) :3727-3733
[4]   Molecular dynamics simulation of crystal dissolution from calcite steps [J].
de Leeuw, NH ;
Parker, SC ;
Harding, JH .
PHYSICAL REVIEW B, 1999, 60 (19) :13792-13799
[5]   Surface structure and morphology of calcium carbonate polymorphs calcite, aragonite, and vaterite: An atomistic approach [J].
de Leeuw, NH ;
Parker, SC .
JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (16) :2914-2922
[6]   Molecular-dynamics simulation of MgO surfaces in liquid water using a shell-model potential for water [J].
de Leeuw, NH ;
Parker, SC .
PHYSICAL REVIEW B, 1998, 58 (20) :13901-13908
[7]   Atomistic simulation of the dissociative adsorption of water on calcite surfaces [J].
Kerisit, S ;
Parker, SC ;
Harding, JH .
JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (31) :7676-7682
[8]   Structure and dynamics of the water/MgO interface [J].
McCarthy, MI ;
Schenter, GK ;
Scamehorn, CA ;
Nicholas, JB .
JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (42) :16989-16995
[9]   MOLECULAR MODELING OF CARBONATE MINERALS - STUDIES OF GROWTH AND MORPHOLOGY [J].
PARKER, SC ;
TITILOYE, JO ;
WATSON, GW .
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1993, 344 (1670) :37-48
[10]  
Pavese A, 1996, PHYS CHEM MINER, V23, P89, DOI 10.1007/BF00202303