Structural Role of CeO<sub>2</sub> in the Modified Borate Glass-Ceramics
- 1 Glass Research Group, Faculty of Science, Physics Department, Mansoura University, Mansoura, Egypt
- 2 Glass Research Group, Faculty of Science, Physics Department, Mansoura University, Mansoura, Egypt
- 3 Spectroscopy Department, Physics Division, National Research Centre, Giza, Egypt
Abstract
A new type of cerium borate glass-ceramic is prepared and studied. The microstructure and crystallization behaviors of the glass samples were investigated by X-ray diffraction (XRD), electron diffraction (ED), and 31 P NMR spectroscopy. The microstructures of samples contain <1 mol% CeO 2 are amorphous in nature. More addition of CeO 2 transforms the glass to glass-ceramics without thermal annealing. The morphological change of the microstructure of these materials was followed by transmission electron microscopy (TEM). The obtained results have revealed that the addition of more than 0.8 mol% CeO 2 can promote nucleation and crystallization routes that are combined with the establishment of diverse crystalline phases. Glasses with lower contents of CeO 2 showed no tendency to crystallization. The crystals of CeO 2 containing glasses were spheroid like morphology that was assigned to the three-dimensional fast growth of the well-formed structural species in the boro-apatite phase. In addition, the cerium free glass is characterized by particle-like morphology. Then the growth of spheroid species in three-dimension plays better compatibility and bioactivity behavior than that of the other types of morphology. This is may because the spherical shape has a higher surface area than that of the needle-like morphology. Accumulation and aggregation of small-sized spheres from cerium borate phases played the role of enhancing the hardness of the studied materials.
- Ning, C.Q. and Zhou, Y. (2002) In Vitro Bioactivity of a Biocomposite Fabricated from HA and Ti Powders by Powder Metallurgy Method. Biomaterials, 23, 2909-2915. https://doi.org/10.1016/S0142-9612(01)00419-7
- Wu, Y., Hench, L.L., Du, J., Choy, K.L. and Guo, J. (2004) Preparation of Hydroxyapatite Fibers by Electrospinning Technique. Journal of the American Ceramic Society, 87, 1988-1991. https://doi.org/10.1111/j.1151-2916.2004.tb06351.x
- Gautier, S., Champion, E., Bernache-Assollant, D. and Chartier, T. (1999) Rheological Characteristics of Alumina Platelet-Hydroxyapatite Composite Suspensions. Journal of the European Ceramic Society, 19, 469-477. https://doi.org/10.1016/S0955-2219(98)00224-6
- Cao, W. and Hench, L.L. (1996) Bioactive Materials. Ceramics International, 22, 493-507. https://doi.org/10.1016/0272-8842(95)00126-3
- Boccaccini, A.R., Erol, M., Stark, W.J., Mohn, D., Hong, Z. and Mano, J.F. (2010) Polymer/Bioactive Glass Nanocomposites for Biomedical Applications: A Review. Composites Science and Technology, 70, 1764-1776. https://doi.org/10.1016/j.compscitech.2010.06.002
- Arcos, D. and Vallet-Regí, M. (2010) Sol-Gel Silica-Based Biomaterials and Bone Tissue Regeneration. Acta Biomaterialia, 6, 2874-2888. https://doi.org/10.1016/j.actbio.2010.02.012
- Rahaman, M.N., Day, D.E., Bal, B.S., Fu, Q., Jung, S.B., Bonewald, L.F. and Tomsia, A.P. (2011) Bioactive Glass in Tissue Engineering. Acta Biomaterialia, 7, 2355-2373. https://doi.org/10.1016/j.actbio.2011.03.016
- Hoppe, A., Güldal, N.S. and Boccaccini, A.R. (2011) A Review of the Biological Response to Ionic Dissolution Products from Bioactive Glasses and Glass-Ceramics. Biomaterials, 32, 2757-2774. https://doi.org/10.1016/j.biomaterials.2011.01.004
- ElBatal, H.A., El-Kheshen, A.A., Ghoneim, N.A., Marzouk, M.A., ElBatal, F.H., Fayad, A.M., El-Beih, A.A., et al. (2019) In Vitro Bioactivity Behavior of Some Borophosphate Glasses Containing Dopant of ZnO, CuO or SrO Together with Their Glass-Ceramic Derivatives and Their Antimicrobial Activity. Silicon, 11, 197-208. https://doi.org/10.1007/s12633-018-9845-9
- Kaur, P., Singh, K.J., Yadav, A.K., Kaur, S., Kaur, R. and Kaur, S. (2020) Growth of Bone like Hydroxyapatite and Cell Viability Studies on CeO2 Doped CaO-P2O5-MgO-SiO2 Bioceramics. Materials Chemistry and Physics, 243, Article ID: 122352. https://doi.org/10.1016/j.matchemphys.2019.122352
- Eslami, M., Hamnabard, Z. and Nemati, A. (2013) Synthesis and Spectral Properties of Nd-Doped Glass-Ceramics in SiO2-CaO-MgO System Prepared by Sol-Gel Method. Journal of Rare Earths, 31, 595-599. https://doi.org/10.1016/S1002-0721(12)60326-3