Time-resolved Small Angle X-ray Scattering Study of Sol-Gel Precursor Solutions of Lead Zirconate Titanate and Zirconia

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Stawski, T.M. and Besselink, R. and Veldhuis, S.A. and Castricum, H.L. and Blank, D.H.A. and Elshof, J.E. ten (2012) Time-resolved Small Angle X-ray Scattering Study of Sol-Gel Precursor Solutions of Lead Zirconate Titanate and Zirconia. Journal of colloid and interface science, 369 (1). 184 - 192. ISSN 0021-9797

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Abstract:The evolution of nanostructure in sol¿gel derived lead zirconate titanate (PZT) and zirconia precursor sols at different hydrolysis ratios was investigated by small angle X-ray scattering (SAXS). The shape of the clusters in the zirconia sol could be described by the length-polydisperse cylindrical form factor. The zirconia-based clusters were characterized by a cross-sectional radius, r0, of 0.28 nm and a practically monodisperse length of ca. 1.85 nm. These clusters were probably constructed of zirconia-related tetrameric building blocks. Similar cylindrical structural motifs were observed in PZT precursor sols with [H2O]/[Zr + Ti] = 9.26 and 27.6, but the polydispersity in length was much higher. Clear scattering contributions from Ti and Pb centers were not detected, which was interpreted in terms of a homogeneous distribution of unbound lead ions in solution and the relatively low scattering intensity from any Ti-based clusters or oligomers that may have been present in the sols.
Item Type:Article
Copyright:© 2012 Elsevier
Link to this item:http://purl.utwente.nl/publications/81869
Official URL:http://dx.doi.org/10.1016/j.jcis.2011.12.033
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