Structure of the {111} NaCl crystal surface grown from solution in the presence of CdCl2

Radenovic, N.; Enckevort, Willem van; Kamiński, Daniel; Heijna, M.; Vlieg, E.

doi:10.1016/j.susc.2005.10.004

Cited by 22 publications

(27 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be seen that mostly KCl crystals are strip. The possible reason of forming strip crystal habit is that Cd 2+ tends to bind with anion of cylindrical surface and is absorbed on the surface of KCl crystals because of its smaller ionic radius and higher charge, which restrains the growth of crystal face and changes the relative growth rate of each surface [8][9][10].…”

Section: Resultsmentioning

confidence: 99%

Influences of additives on the crystal habit of potassium chloride

Guo

Yuan

et al. 2010

Front. Chem. Eng. China

View full text Add to dashboard Cite

By means of constant control speed cooling crystallization, the influences of four additives, including lead chloride, cadmium chloride, sodium salicylate, and quaternary ammonium salt, on the crystal habit of KCl were investigated. The results show that the crystal habit of KCl is cube without additives, the crystal habit of KCl is ellipsoid-like in the presence of Pb 2+ , the crystal habit of KCl is strip in the presence of Cd 2+ , and the crystal habit of KCl is cavate cube in the presence of sodium salicylate. Xray diffractometry analysis reveals that these additives can change the crystal habit of KCl but not its crystal structure.

show abstract

Section: Resultsmentioning

confidence: 99%

Influences of additives on the crystal habit of potassium chloride

Guo

Yuan

et al. 2010

Front. Chem. Eng. China

View full text Add to dashboard Cite

show abstract

“…We have no direct data for the urea case, but we know that such an epitaxial layer is not present when formamide or CdCl 2 are used as additives. 8 We find that for the cases of pure water solutions, and for formamide or Cd 2+ additives, the main stabilization mechanism is the formation of a charge-compensating layer in the liquid, i.e., the formation of an electrochemical double layer. For charged surfaces in solution, this may be a common mechanism, because typically there are several ionic species present in the solution.…”

Section: B Stabilization Of Theˆ111‰ Facementioning

confidence: 81%

“…The analytical approach of calculating the properties of the electrical double layer on top of a NaCl ͕111͖ surface is described in Ref. 8. The calculations further show that about 80% of the chargecompensating Cl − ions are confined to the first liquid layer.…”

Section: Discussionmentioning

confidence: 99%

“…Results obtained for NiO͑111͒ in vacuum confirmed these predictions. 7 In the case of growth from solution, recent work carried out in our group using formamide or CdCl 2 as impurities 8 has shown that no reconstruction or faceting occurs for ͕111͖ NaCl surfaces. For the CdCl 2 case, it was concluded that the surface is Cl − terminated and that a disordered layer containing 1 4 ML Cd 2+ and 3 4 ML H 2 O stabilizes this surface.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Stability of the polar {111} NaCl crystal face

Radenovic

Kamiński

Enckevort

et al. 2006

The Journal of Chemical Physics

Self Cite

View full text Add to dashboard Cite

We present a surface x-ray diffraction determination of the ͕111͖ NaCl-liquid interface structure. Using ultrathin water or formamide liquid layers we ascertained that the crystal surface is smooth at an atomic level and is not reconstructed. Our results reveal surprisingly small differences in surface structure between the two cases, which nevertheless lead to dramatic differences in crystal morphology. We determined that the rocksalt ͕111͖ surface is Na + terminated for both environmental conditions. A quarter to half a monolayer of laterally disordered Cl − ions is located on top of a fully ordered Na + crystal surface with occupancy 0.75-1.0. This means that the polar surface is stabilized through the formation of an electrochemical double layer.

show abstract

“…Consequently, in recent years there is an increasing interest in the understanding of the structure of the interface between crystal and medium as well as the composition of complexes in the concentrated solutions of ionic salts containing cationic impurities [3,9,10].…”

Section: Introductionmentioning

confidence: 99%

In situ study of growth and dissolution kinetics of ammonium oxalate monohydrate single crystals from aqueous solutions containing cationic impurities

Sangwal

Wójcik

Borc

2007

Cryst. Res. Technol.

View full text Add to dashboard Cite

The results of an in situ investigation of the effect of four different bi-and trivalent cations (Fe(III), Cu(II), Mn(II) and Cr(III)) on the displacement velocity of individual growth steps on the (110) face of ammonium oxalate monohydrate crystals as a function of supersaturation are described and discussed. It was observed that: (1) at a particular temperature of pure solutions and solutions containing impurities, the velocity v of movement of the [110] growth steps is always greater than that of the [111] steps, (2) fluctuations in the velocity of individual growth steps occur in all solutions containing similar concentrations of different impurities, (3) the value of kinetic coefficient β for growth steps decreases with an increase in the concentration c i of Cu(II) impurity, but that for dissolution steps does not depend on c i ; moreover, the value of kinetic coefficient β for growth steps is higher than that of dissolution steps, and (4) in the presence of Mn(II) and Cr(III) impurities, the kinetic coefficient β for dissolution steps is several times greater than that for growth steps. The results are explained from the standpoint of Kubota-Mullin model of adsorption of impurities at kinks in the steps and the stability of dominating complexes present in solutions. Analysis of the results revealed that: (1) the effectiveness of different impurities in inhibiting growth increases in the order: Fe(III), Cu(II), Mn(II), and Cr(III), and this behavior is directly connected with the stability and chemical constitution of dominating complexes in saturated solutions, (2) fluctuations in the velocity of growth steps is associated with the effectiveness of an impurity for adsorption; the stronger the adsorption of an impurity, the higher is the fluctuation in step velocity v, and (3) depending on the nature of the impurity, the kinetic coefficient for the dissolution steps can remain unchanged or can be higher than that of the growth steps.

show abstract

Structure of the {111} NaCl crystal surface grown from solution in the presence of CdCl2

Cited by 22 publications

References 25 publications

Influences of additives on the crystal habit of potassium chloride

Influences of additives on the crystal habit of potassium chloride

Stability of the polar {111} NaCl crystal face

In situ study of growth and dissolution kinetics of ammonium oxalate monohydrate single crystals from aqueous solutions containing cationic impurities

Contact Info

Product

Resources

About