Effect of Doping With Copper (II) and Nickel (II) Oxides on Morphological Properties of Silica/Titania Nanocomposites

Authors

  • M. A. Nazarkovsky Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
  • E. V. Goncharuk Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
  • E. M. Pakhlov Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
  • E. Skwarek Maria Curie-Skłodowska University
  • J. Skubiszewska-Zięba Maria Curie-Skłodowska University
  • R. Leboda Maria Curie-Skłodowska University
  • W. Janusz Maria Curie-Skłodowska University
  • V. M. Gun'ko Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine

Abstract

Morphological characteristics of CuO- and NiO-doped silica/titania nanocomposites are analyzed using atomic force microscopy and low-temperature nitrogen adsorption. The different types of pores (nano-, meso- and macropores) in the powder composites are modeled as voids between spherical nanoparticles packed in random aggregates. It is shown that specific surface area, total pore volume, average pore radius, incremental pore size distribution and changes in relationships between these characteristics of the composites reveal a non-linear behavior depended on the presence of the dopants. The textural and atomic force microscopy investigations suggest that processes of aggregation differ from each other depending on the type of doping oxide. Fractal dimension, estimated according to Frenkel-Halsey-Hill equation using the adsorption branch, has values about 2.50–2.60 and indicates the aggregate formation.

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(1)
Nazarkovsky, M. A.; Goncharuk, E. V.; Pakhlov, E. M.; Skwarek, E.; Skubiszewska-Zięba, J.; Leboda, R.; Janusz, W.; Gun’ko, V. M. Effect of Doping With Copper (II) and Nickel (II) Oxides on Morphological Properties of Silica Titania Nanocomposites. Him. Fiz. Tehnol. Poverhni 2012, 3, 386-394.

Issue

Vol. 3 No. 4 (2012): Chemistry, Physics and Technology of Surface / Himia, Fizika ta Tehnologia Poverhni

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