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Defects at Oxide Surfaces pp 273–301Cite as

Defects in Metal Oxide Nanoparticle Powders

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Part of the book series: Springer Series in Surface Sciences ((SSSUR,volume 58))

Abstract

Metal oxides are mainly used in powder or particulate form for their application as functional materials . Insights into functional as well as unwanted properties of different defect types ranging from oxygen vacancies to grain boundaries and pores require an integrated characterization approach and are extremely difficult to establish. After a brief introduction into the complexity of particle systems and related heterogeneities, we discuss examples where for defects and other distinct structural features of MgO or TiO2 particle systems firm structure-property relationships have been established. Moreover, we want to point out that processing of particle matters. Related microstructural changes can induce the formation of solid-solid interfaces upon transformation of nanoparticle powders into mesoporous nanoparticle networks. This change in aggregation level and microstructure can substantially modify the electronic, optical and spectroscopic properties of metal oxide nanoparticle ensembles and, for this reason, plays a critical role for the generation of structural and—at the same time—functional defects inside particle ensembles.

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Acknowledgments

We acknowledge support from the Austrian Fonds zur Förderung der Wissenschaftlichen Forschung FWF-PI312 (ERA Chemistry). We also thank Dr. Nicolas Siedl for his help in the preparation of figures. We are particularly grateful for various fruitful discussions with Alexander L. Shluger, Peter V. Sushko and Keith McKenna.

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  1. Department of Materials Science and Physics, University of Salzburg, Hellbrunnerstrasse 34/III, 5020, Salzburg, Austria

    Thomas Berger & Oliver Diwald

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  1. Paris Institute of Nanoscience, University Pierre and Marie Curie, Paris, France

    Jacques Jupille

  2. Department of Chemistry, University College London, London, United Kingdom

    Geoff Thornton

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Berger, T., Diwald, O. (2015). Defects in Metal Oxide Nanoparticle Powders. In: Jupille, J., Thornton, G. (eds) Defects at Oxide Surfaces. Springer Series in Surface Sciences, vol 58. Springer, Cham. https://doi.org/10.1007/978-3-319-14367-5_9

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