Comparative Study on the Optical Properties of Sm3+ Doped Glasses with Shell-Based and Commercial Calcium Oxide Modifiers

Nuchjaree Kiwsakunkran; Natthakridta  Chanthima; Nakarin  Singkiburin; Anon  Angnanon

doi:10.53848/ssstj.v13i1.1285

Authors

Nuchjaree Kiwsakunkran Nakhon Pathom Rajabhat Universit
Natthakridta Chanthima Nakhon Pathom Rajabhat University
Nakarin Singkiburin Nakhon Pathom Rajabhat University
Anon Angnanon Chiang Mai University

DOI:

https://doi.org/10.53848/ssstj.v13i1.1285

Keywords:

Glass, , Samarium,, Shell-derived calcium oxide, , Optical properties

Abstract

This study focuses on the optical and basic physical properties of samarium (Sm³⁺)-doped glasses prepared using calcium oxide (CaO) derived from mussel and cockle shells as glass network modifiers, and compares them with commercial CaO. X-ray fluorescence (XRF) analysis showed that the shell-derived CaO possessed high purity, with CaO content exceeding 99% after calcination at 900°C for 5 hours. X-ray diffraction (XRD) results revealed that prior to calcination, the primary phase in the shells was calcium carbonate (CaCO₃), while after heat treatment, the dominant phase transformed into calcium oxide (CaO). This indicates successful thermal decomposition of CaCO₃ and effective phase transition under the given conditions. In terms of optical properties, the shell-derived glass samples exhibited higher emission intensity and longer lifetimes compared to the commercial CaO sample. The density, refractive index, and molar volume values were comparable across all samples, suggesting that the use of shell-derived CaO does not significantly alter the physical properties of the glass. These results demonstrate the potential of shell-derived CaO as a sustainable alternative raw material for the production of luminescent glasses, contributing to environmentally friendly and cost-effective materials development.

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