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Zhang R, Santangelo S, Fazio E, et al. Stabilization of Titanium Dioxide Nanoparticles at the Surface of Carbon Nanomaterials Promoted by Microwave Heating. Chemistry. 2015;21(42):14901-10doi: 10.1002/chem.201502433.
Zhang, R., Santangelo, S., Fazio, E., Neri, F., D'Arienzo, M., Morazzoni, F., Zhang, Y., Pinna, N., & Russo, P. A. (2015). Stabilization of Titanium Dioxide Nanoparticles at the Surface of Carbon Nanomaterials Promoted by Microwave Heating. Chemistry (Weinheim an der Bergstrasse, Germany), 21(42), 14901-10. https://doi.org/10.1002/chem.201502433
Zhang, Rui, et al. "Stabilization of Titanium Dioxide Nanoparticles at the Surface of Carbon Nanomaterials Promoted by Microwave Heating." Chemistry (Weinheim an der Bergstrasse, Germany) vol. 21,42 (2015): 14901-10. doi: https://doi.org/10.1002/chem.201502433
Zhang R, Santangelo S, Fazio E, Neri F, D'Arienzo M, Morazzoni F, Zhang Y, Pinna N, Russo PA. Stabilization of Titanium Dioxide Nanoparticles at the Surface of Carbon Nanomaterials Promoted by Microwave Heating. Chemistry. 2015 Oct 12;21(42):14901-10. doi: 10.1002/chem.201502433. Epub 2015 Aug 26. PMID: 26307370.
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Chemistry. 2015 Oct 12;21(42):14901-10. doi: 10.1002/chem.201502433. Epub 2015 Aug 26.

Stabilization of Titanium Dioxide Nanoparticles at the Surface of Carbon Nanomaterials Promoted by Microwave Heating.

Chemistry (Weinheim an der Bergstrasse, Germany)

Rui Zhang, Saveria Santangelo, Enza Fazio, Fortunato Neri, Massimiliano D'Arienzo, Franca Morazzoni, Yihe Zhang, Nicola Pinna, Patrícia A Russo

Affiliations

  1. Humboldt Universität zu Berlin, Institut für Chemie, Berlin (Germany).
  2. Università "Mediterranea", Dip. di Ing. Civile dell'Energia, dell'Ambiente e dei Materiali (DICEAM), Reggio Calabria (Italy).
  3. Università di Messina, Dip. di Fisica e di Scienze della Terra (DFST), Messina (Italy).
  4. INSTM, Università di Milano-Bicocca, Dip. di Scienza dei Materiali, Milano (Italy).
  5. Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing (P. R. China).
  6. Humboldt Universität zu Berlin, Institut für Chemie, Berlin (Germany). [email protected].
  7. Humboldt Universität zu Berlin, Institut für Chemie, Berlin (Germany). [email protected].

PMID: 26307370 DOI: 10.1002/chem.201502433

Abstract

TiO2 is frequently combined with carbon materials, such as reduced graphene oxide (RGO), to produce composites with improved properties, for example for photocatalytic applications. It is shown that heating conditions significantly affect the interface and photocatalytic properties of TiO2 @C, and that microwave irradiation can be advantageous for the synthesis of carbon-based materials. Composites of TiO2 with RGO or amorphous carbon were prepared from reaction of titanium isopropoxide with benzyl alcohol. During the synthesis of the TiO2 nanoparticles, the carbon is involved in reactions that lead to the covalent attachment of the oxide, the extent of which depends on the carbon characteristics, heating rate, and mechanism. TiO2 is more efficiently stabilized at the surface of RGO than amorphous carbon. Rapid heating of the reaction mixture results in a stronger coupling between the nanoparticles and carbon, more uniform coatings, and smaller particles with narrower size distributions. The more efficient attachment of the oxide leads to better photocatalytic performance.

© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords: graphene; microwave-assisted synthesis; non-aqueous sol-gel formation; photocatalysis; titanium dioxide

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