Direction specific interactions of 1,4-dicarboxylic acid with calcite surfaces.
Interactions of succinic acid (SUC) with the {104} cleavage faces of calcite show a strong preference in crystallographic directions. In situ atomic force microscopy revealed that the morphology of etch pits on the crystal surfaces experienced a transition from the common rhombus to a hexagon upon the introduction of SUC. The pit shape further evolved from 6-sided to 7-sided and eventually to 5-sided with increasing concentrations of SUC. Analysis indicates that the morphology changes may result from SUC preferentially binding to the [42] and [010] edges of the (104) plane to selectively slow down their step speed.
Teng
H Henry
HH
Department of Chemistry, George Washington University, Washington, D.C. 20052, USA. hteng@gwu.edu
Chen
Yang
Y
Pauli
Elli
E
D002119:Calcium Carbonate / Q000737:chemistry*; D003998:Dicarboxylic Acids / Q000737:chemistry*; D018625:Microscopy, Atomic Force
D003998:Dicarboxylic Acids; D002119:Calcium Carbonate