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New approach to nanolime synthesis at ambient temperature

Authors
  • Martínez-Ramírez, Sagrario1
  • Higueruela, Laura R.1
  • Cascales, Ignacio1
  • Martín-Garrido, Moisés1
  • Blanco-Varela, María Teresa2
  • 1 Instituto de Estructura de la Materia (IEM-CSIC), C/Serrano 121, Madrid, 28006, Spain , Madrid (Spain)
  • 2 Instituto de Ciencias de la Construcción “Eduardo Torroja” (IETCC-CSIC), Serrano Galvache 4, Madrid, 28033, Spain , Madrid (Spain)
Type
Published Article
Journal
SN Applied Sciences
Publisher
Springer International Publishing
Publication Date
Dec 17, 2018
Volume
1
Issue
1
Identifiers
DOI: 10.1007/s42452-018-0122-8
Source
Springer Nature
Keywords
License
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Abstract

This study explored the viability of synthesising nanolime at ambient temperature by raising calcium solubility through the formation of complexes with dissolved sugars. Micro-Raman findings confirmed the formation of nanolime particles whilst the percentage of Ca(OH)2 formed, observed to vary with synthesis conditions, was calculated with thermogravimetry. Nanoparticles were synthesised most productively (77%) in a 5% sugary solution at a temperature of 25 °C and a 4 h reaction time. The hexagonal nanoparticles synthesised ranged in size from 200 to 25 nm. Portlandite formation is related to calcium complex formation with less mannitol that sucrose needed to form similar NPs of Ca(OH)2. The sugary media also favoured the formation of amorphous calcium carbonate.

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