Publication Type |
Journal Article |
Title |
Synthesis and application of hydroxyapatite nanorods for improving properties of stone consolidants |
Authors |
A. Rodrigues B. Sena da Fonseca A. P. Ferreira Pinto S. Picarra Maria F. Montemor |
Groups |
CSSE |
Journal |
CERAMICS INTERNATIONAL |
Year |
2022 |
Month |
Notice: Undefined index: in /afs/ist.utl.pt/groups/cqe/web/tmp/templates_c/77f86a5f762542dadf50c7f7fefa96acd45c2726_0.file.paper.tpl.html.php on line 163
|
Volume |
48 |
Number |
10 |
Pages |
14606-14617 |
Abstract |
This study aims at preparing novel composite materials for the consolidation of damaged stone in built heritage from tetraethoxysilane(TEOS)based sols with nano-sized hydroxyapatite (HAp) with high crystallinity and high aspect ratio. Synthesis of nanostructures of hydroxyapatite (HAp) was carried out using hydrothermal precipitation methods at different reaction temperatures and periods. Rod-like HAp nanostructures with a diameter around 5-20 nm and length up to 125 nm were obtained. The samples of nano-HAp were characterised using powder X-ray diffraction (XRD), Transmission Electron Microscopy (TEM) and mu-Raman spectroscopy. The derived nanostructures were used to modify TEOS-based formulations after tuning their colloidal stability period to the needs of their application as stone consolidants. The chemical structure (is-Raman), viscosity, macroscopic and microscopic morphologies - Scanning Electron Microscopy (SEM) and EDS - and Shore Hardness of the composite materials were studied. The potential of the composite materials containing nano-HAp-rods as stone consolidants revealed to be superior to the potential of reference materials. |
DOI |
http://dx.doi.org/10.1016/j.ceramint.2022.02.004 |
ISBN |
|
Publisher |
|
Book Title |
|
ISSN |
0272-8842 |
EISSN |
1873-3956 |
Conference Name |
|
Bibtex ID |
WOS:000792739000004 |
Observations |
|