Glass preparation for investigation and study with Suphan Buri province rice husk ash instead of silicon dioxide doped with praseodymium

Abstract

In this work, the local rice husk ash collected from rice paddy in Suphan Buri province was used to study the utilization as a SiO2 chemical substitute to fabricate the glass samples doped with praseodymium. The ash was calcined at various calcination temperatures and studied its chemical components. The glasses with formular SiO2(RHA)-B2O3-Na2O-CaO-Pr2O3 were prepared by melt - quenching technique and were studied through various scientific instruments to obtain their properties. The measurements revealed that as the Pr2O3 concentration increased, the density along with the molar volume increased. The intensity of all absorption bands increases with Pr2O3 concentration when measuring the absorption spectra of glasses in the 200 - 2,500 nm range. Additionally, using a 444 nm excitation wavelength, the photoluminescence characteristics of Pr3+ doped-SiO2(RHA)-B2O3-Na2O-CaO-Pr2O3 glasses were seen and found the emitted light around the 605 nm band.