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  Catalytic wet air oxidation of methyl orange onto Pt and Pt–TiO2

Rabelo, A. C., Rosario, A. V., Trapp, M. A., Filho, E. R., Forim, M., & Pereira, E. C. (2016). Catalytic wet air oxidation of methyl orange onto Pt and Pt–TiO2. Journal of Nanoscience and Nanotechnology, 16(9), 10040-10047. doi:10.1166/jnn.2016.12169.

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EXT564.pdf (Publisher version), 2MB
 
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 Creators:
Rabelo, Adriano C., Author
Rosario, Adriane V., Author
Trapp, Marilia A.1, Author              
Filho, Edson Rodrigues, Author
Forim, Moacir, Author
Pereira, Ernesto C., Author
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1External Organizations, ou_persistent22              

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 Abstract: A binary system composed of Pt clusters supported on TiO2 nanoparticles was prepared by Pechini Method and the samples were used in the catalytic wet oxidation of methyl orange. Transmission electron micrographs and X-ray diffraction patterns confirmed the composite formation. Liquid chromatography coupled with mass spectroscopy demonstrated that both nanoparticles, Pt and Pt–TiO2, led to the same reaction products. UV-Vis spectrum of individual reaction products indicate that azo group was attacked and the resonance between rings was broken. We have observed also an important increase in the kinect constant for the reaction of the Pt–TiO2 samples. Normalizing the kinect constants by both surface area and mass, the values obtained for Pt–TiO2 sample is 12 times faster than those obtained for Pt nanoparticles.

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 Dates: 2016-09-01
 Publication Status: Published in print
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 Table of Contents: -
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 Identifiers: Other: EXT564
DOI: 10.1166/jnn.2016.12169
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Title: Journal of Nanoscience and Nanotechnology
  Other : J. Nanosci. Nanotechnol.
Source Genre: Journal
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Publ. Info: Stevenson Ranch, Calif. : American Scientific Publishers
Pages: - Volume / Issue: 16 (9) Sequence Number: - Start / End Page: 10040 - 10047 Identifier: ISSN: 1533-4880
CoNE: https://pure.mpg.de/cone/journals/resource/111002735701026