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The big problem of small particles : a comparison of methods for determination of particle size in nanocrystalline anatase powders

Weibel, Alicia and Bouchet, Renaud and Boulc'h, Florence and Knauth, Philippe The big problem of small particles : a comparison of methods for determination of particle size in nanocrystalline anatase powders. (2005) Chemistry of materials , vol. 1 (n° 9). pp. 2378-2385. ISSN 0897-4756

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Official URL: http://dx.doi.org/10.1021/cm0403762

Abstract

We compare different methods for particle size determination in nanocrystalline anatase (TiO2) powders: transmission electron microscopy (TEM), nitrogen adsorption measurements, mercury porosimetry, and X-ray diffraction(XRD). The main source of errors in TEM is the sampling of the powder population, whereas in XRD the deconvolution of peak broadening due to instrument, microstrains, and crystalline domain size is delicate and can lead to unreliable results. Different approaches including Scherrer and Williamson-Hall equations are discussed. The presence of mesopores due to agglomerate formation is clearly revealed in adsorption measurements and porosimetry.

Item Type:Article
Additional Information:The original publication is available on http://pubs.acs.org/journals/cmatex/index.html
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Université de Provence - Aix-Marseille I (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By: Thomas Bonnecarere

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