•  
  •  
 

INVESTIGATING THE EFFECTS OF MELTING PARAMETERS AND CERIUM OXIDE MOLARITY ON THE BORATE BASED GLASS STRUCTURE USING RAMAN AND FTIR SPECTROSCOPY

Abstract

This research investigated the effects of the structural properties of cerium oxide evolved with varying cerium ratios contributing to the development of biomaterials. Cerium, a rare earth element with variable valence states (Ce³⁺ and Ce⁴⁺), plays a critical role in enabling the glass to function as a biomaterial. A set of cerium doped tetraborate bioglass was used to examine the structural changes as the molarity of cerium and melting parameters vary, aiming to understand its potential as a biomaterial. The glass was produced by melting a tetraborate composition doped with varying amounts of CeO₂ at different times and temperatures, followed by quenching between metal plates and milling into particles smaller than 38 µm. Structural analysis was performed using Raman spectroscopy with a 532 nm laser and Fourier Transform Infrared (FTIR) spectroscopy to examine the structure of the glass. Data indicate pronounced Ce⁴⁺ peaks at 400 cm⁻¹ and 460 cm⁻¹ and a Ce³⁺ peak at 350 cm⁻¹ at higher CeO₂ concentrations. No correlation between melting time and structural changes was identified, while temperature variations significantly influence the borate glass structure. The FTIR spectra shows a broadening of the boron-oxygen bonds peaks around the 400- 480 cm⁻¹ suggests that Ce³⁺ acts as a modifier and promotes conversion of BO₃ (trigonal) to BO₄ (tetrahedral) with increasing cerium within the glass. These broadening, along the reduction of Ce4+ (Ce-O) peak at 460 cm⁻¹suggests a transformation of Ce4+ into Ce3+ creating a higher Ce³⁺/Ce4⁺ ratio. These findings contribute to understanding how cerium ratios and processing conditions affect bioglass properties, supporting its potential applications in biomaterials..

Acknowledgements

UNG Dept. of Biology

This document is currently not available here.

Share

COinS