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  • %0 ART
  • %T Effects of alginic acid from marine algae on calcium carbonate electrodeposited coating
  • %A PAVEZ Jorge
  • %A SILVA Juan F.
  • %A MELO Francisco
  • %G 0022-0248
  • %I Elsevier
  • %C Amsterdam, PAYS-BAS
  • %D 2005
  • %V 282
  • %N 3-4
  • %P 438-447
  • %P 10
  • %O Anglais
  • %K Mg
  • %K Inorganic compounds
  • %K Composé minéral
  • %K Phase transformations
  • %K Transformation phase
  • %K Calcite
  • %K Calcite
  • %K Magnesium
  • %K Magnésium
  • %K Electrolytes
  • %K Electrolyte
  • %K X-ray microscopy
  • %K Microscopie RX
  • %K Scanning electron microscopy
  • %K Microscopie électronique balayage
  • %K Electrodes
  • %K Electrode
  • %K Transparent material
  • %K Matériau transparent
  • %K Tin oxides
  • %K Etain oxyde
  • %K Indium oxides
  • %K Indium oxyde
  • %K Electrocrystallization
  • %K Electrocristallisation
  • %K Coatings
  • %K Revêtement
  • %K Electrodeposition
  • %K Dépôt électrolytique
  • %K Calcium carbonates
  • %K Calcium carbonate
  • %K Algae
  • %K Algae
  • %K 81.10.Dn
  • %K 81.15.Pq
  • %K 83.80.Lz
  • %K 87.64.Bx
  • %K 87.64.Dz A2. Electrodeposit
  • %K Bl. Alginate
  • %K Bl. Calcite
  • %K Bl. Calcium Carbonate
  • %K Bl. Magnesium calcite
  • %X The effect of alginic acid, extracted from the Lessonia trabeculata calcareous marine algae, was studied in the electrocrystallization of calcium carbonate (CaCO[3]) on indium tin oxide (ITO) transparent electrodes. Scanning electron microscopy, X-ray diffraction-collected data and microscopic observations show that the presence of Mg[2+] at the electrolyte induces the magnesium calcite and aragonite phase formation along with the changes in morphology and crystal orientation. Addition of alginic acid strongly inhibits the effect of Mg[2+] on the crystallization, receiving in favor of the nucleation and growth of calcite phase of CaCO[3]. These results suggest that the alginic acid acts as an organic template in the electrocrystallization of CaCO[3], controlling the crystallographic orientation of crystal growth, and as a consequence, the crystal morphology. 
  • %S Journal of crystal growth

Bas