English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/211453
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Precipitation and Crystallization Kinetics in Silica Gardens

AuthorsGlaab, F.; Rieder, J.; Klein, R.; Choquesillo Lazarte, Duane; Melero García, Emilio ; García Ruiz, Juan Manuel ; Kunz, W.; Kellermeier, M.
Chemical gardens
Issue Date21-Dec-2016
PublisherJohn Wiley & Sons
CitationChemPhysChem 18: 338-345 (2017)
AbstractSilica gardens are extraordinary plant-like structures resulting from the complex interplay of relatively simple inorganic components. Recent work has highlighted that macroscopic self-assembly is accompanied by the spontaneous formation of considerable chemical gradients, which induce a cascade of coupled dissolution, diffusion, and precipitation processes occurring over timescales as long as several days. In the present study, this dynamic behavior was investigated for silica gardens based on iron and cobalt chloride by means of two synchrotron-based techniques, which allow the determination of concentration profiles and time-resolved monitoring of diffraction patterns, thus giving direct insight into the progress of dissolution and crystallization phenomena in the system. On the basis of the collected data, a kinetic model is proposed to describe the relevant reactions on a fundamental physicochemical level. The results show that the choice of the metal cations (as well as their counterions) is crucial for the development of silica gardens in both the short and long term (i.e. during tube formation and upon subsequent slow equilibration), and provide important clues for understanding the properties of related structures in geochemical and industrial environments.
Publisher version (URL)http://dx.doi.org/10.1002/cphc.201600748
Identifiersdoi: 10.1002/cphc.201600748
issn: 1439-7641
Appears in Collections:(IACT) Artículos
Files in This Item:
File Description SizeFormat 
GarciaRuiz_ChemPubSoc18_338.pdf1,24 MBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.