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Crystals 2018, 8(2), 69; https://doi.org/10.3390/cryst8020069

Effect of Alginate from Chilean Lessonia nigrescens and MWCNTs on CaCO3 Crystallization by Classical and Non-Classical Methods

1
Department of Biological and Animal Sciences, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago, P.O. Box 2-15, Chile
2
Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago, S. Livingstone 1007, Chile
3
Department of Material Chemistry, Electrocatalysis Laboratory, Faculty of Chemistry and Biology, University of Santiago de Chile, Santiago, P.O. Box 40-33, Chile
*
Author to whom correspondence should be addressed.
Received: 23 December 2017 / Revised: 27 January 2018 / Accepted: 29 January 2018 / Published: 31 January 2018
(This article belongs to the Special Issue Carbonates)
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Abstract

In our crystallization experiments, the influence of alginate from Chilean Lessonia nigrescens and functionalized multi-walled carbon nanotubes (MWCNTs) was tested through electrocrystallization (EC) and gas diffusion (GD) methods on the crystal growth of calcium carbonate (CaCO3) and their possible stabilization of proto-structures in amorphous CaCO3 (ACC) state through pre-nucleation clusters (PNC) essays with automatic potentiometric titrations were performed. CaCO3 crystals obtained in the in vitro above-mentioned crystallization systems were characterized by scanning electron microscope (SEM), energy-dispersive X-ray spectrometry (EDS) and powder X-ray diffractometer (XRD). Our experimental findings showed that ALG and functionalized MWCNTs stabilized truncated and agglomerated vaterite-like particles through GD and EC methods. While, on the other hand, we obtained qualitative information about induction or inhibition of CaCO3 nucleation that was provided by potentiometric titrations. View Full-Text
Keywords: calcium carbonate; alginate; Lessonia nigrescens; electrocrystallization; multi-wall carbon nanotubes; potentiometric titration calcium carbonate; alginate; Lessonia nigrescens; electrocrystallization; multi-wall carbon nanotubes; potentiometric titration
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Sánchez, M.; Vásquez-Quitral, P.; Butto, N.; Díaz-Soler, F.; Yazdani-Pedram, M.; Silva, J.F.; Neira-Carrillo, A. Effect of Alginate from Chilean Lessonia nigrescens and MWCNTs on CaCO3 Crystallization by Classical and Non-Classical Methods. Crystals 2018, 8, 69.

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