Red ruby glass from gold nanoparticles obtained by LASiS - a new approach


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.




Materials Science


Almeida, JC; Davim, EJC; Salvado, IMM; Fernandes, MHV; Costa, FM; Rey-Garcia, F; Francisco, LM; Lopes, AB

nossos autores


This work was developed within the scope of the project DecorGlass - Decoration Techniques for the Glass, PT2020 - SI I&DT - I&D copromotion n degrees 3485, and by the project CICECO-Aveiro Institute of Materials, POCI-01-0145-FEDER-007679 (FCT Ref. UID/CTM/50011/2013), financed by national funds through the FCT/MEC and when appropriate cofinanced by FEDER under the PT2020 Partnership Agreement.

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