Multifunctional nanomaterials base on inorganic hydroxides: a look from the atomic scale
| Autor: | Gómez Villalba, Luz Stella, Sierra-Fernández, Aránzazu, Fort González, Rafael, Rabanal, M. Eugenia |
|---|---|
| Přispěvatelé: | Ministerio de Economía y Competitividad (España), Comunidad de Madrid |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 2013-4746 |
| Popis: | Trabajo presentado en VII Serbian Ceramic Society Conference, celebrado en Belgrado (Serbia), del 17 al 19 de septiembre de 2018 Nanomaterials with brucite structure have aroused interest in a wide range of applications due to its structure in layers which allows capturing inorganic and organic ions. Among them, Ca(OH)2 and Mg(OH)2 stand out for their alkalinity which can be used for controlling acidification processes, in wall paintings or paper surfaces, in a wide field within cultural heritage conservation. The capability of capturing CO2 in the structure causes its carbonation, allowing the application in consolidation and restoration of building materials, including lime mortars and carbonate stones. Environmentally, Ca/Mg hydroxides can be used as CO2 gas and nuclear waste collectors and also for elimination of liquid contaminants. Also, they are used as flame retardants and antibacterial agents. A comprehensive control of the structure is important to determine the stability and phase transformation processes. TEM-HRTEM results of diverse nanoparticles obtained from different synthesis routes are discussed in terms of morpho-structural properties, performing a detailed atomic-scale analysis of the defects and their role in dehydration processes, optical properties and crystal shape variations using TEM-EELS, SEM-EDS, Electron diffraction, image analysis, XRD and ESEM-Cathodoluminescence spectroscopy. Results show how depending on the synthesis conditions, besides of environmental parameters such as relative humidity, time or in-situ radiation effects, give rise to microstructural variations which modify their properties. This work was funded by the Innovation and Education Ministry (CLIMORTEC, BIA2014- 53911-R, GEOMATERIALES 2 (S2013/MIT_2914, MAT2013-47460-C5-5-P projects). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|