CICECO » Red ruby glass from gold nanoparticles obtained by LASiS

authors	Almeida, JC; Davim, EJC; Salvado, IMM; Fernandes, MHV; Costa, FM; Rey-Garcia, F; Francisco, LM; Lopes, AB
nationality	International
journal	JOURNAL OF NON-CRYSTALLINE SOLIDS
author keywords	Laser; Ablation; LASiS; Sol-gel; Red glass
keywords	PULSED-LASER ABLATION
abstract	Currently, most of the red colored glasses are still produced using cadmium sulfoselenide, despite its high toxicity. Alternative solutions, more environmentally friendly, have been sought, most of them going through the use of gold or copper nanoparticle, the color being obtained by striking. This work presents a new methodology for production of a red colored glass by the incorporation of gold nanoparticles in the melt, trying to take advantage of an amorphous silica layer involving the nanoparticles. Gold nanoparticles (AuNP) were produced by laser ablation synthesis in solution (LASiS), using a solution of tetra-ethyl orthosilicate (TEOS) and isopropanol (IPA). A xerogel was prepared using the TEOS:IPA:AuNp suspension, mixed with a alkaline-earth aluminosilicate colorless glass and melted at 1350 degrees C producing a glass with an intense and homogeneous ruby red color without the need of a striking stage.
publisher	ELSEVIER
issn	0022-3093
year published	2020
volume	537
digital object identifier (doi)	10.1016/j.jnoncrysol.2020.119987
web of science category	Materials Science, Ceramics; Materials Science, Multidisciplinary
subject category	Materials Science
unique article identifier	WOS:000527029100001