Thermal behavior of Cu-doped TiO2 gels synthesized by the sol-gel method | Zendy

Jeanina Pandele-Cuşu | Zendy; Irina Atkinson | Zendy; Adriana Rusu | Zendy; Nicoleta G. Apostol | Zendy; V. S. Teodorescu | Zendy; Luminița Predoană | Zendy; Imre Miklós Szilágyi | Zendy; György Pokol | Zendy; M. Zaharescu | Zendy

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Thermal behavior of Cu-doped TiO2 gels synthesized by the sol-gel method

Author(s) -

Jeanina Pandele-Cuşu,

Irina Atkinson,

Adriana Rusu,

Nicoleta G. Apostol,

V. S. Teodorescu,

Luminița Predoană,

Imre Miklós Szilágyi,

György Pokol,

M. Zaharescu

Publication year - 2021

Publication title -

revue roumaine de chimie

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.135

H-Index - 21

ISSN - 0035-3930

DOI - 10.33224/rrch.2021.66.3.01

Subject(s) - x ray photoelectron spectroscopy , differential scanning calorimetry , dopant , thermogravimetric analysis , fourier transform infrared spectroscopy , materials science , analytical chemistry (journal) , transmission electron microscopy , sol gel , thermal decomposition , differential thermal analysis , annealing (glass) , infrared spectroscopy , thermal analysis , doping , scanning electron microscope , diffraction , chemistry , chemical engineering , thermal , chromatography , nanotechnology , organic chemistry , optics , composite material , physics , optoelectronics , meteorology , engineering , thermodynamics

The thermal behavior of Cu-doped TiO2 gels obtained by the sol-gel method was investigated by thermogravimetric and differential thermal analysis (TG/DTG/DTA) and differential scanning calorimetry (DSC) measurements. The comparative investigation of the structure and morphology of the as-prepared gels and of the nanopowders obtained by annealing them was realized by transmission electron microscopy (TEM), Fourier transmission infrared spectroscopy (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Significant differences were noticed depending on the amount of dopant (0.5 or 2.0 mol % CuO). A higher dopant concentration resulted in a more complex decomposition of the sample. This behavior was associated with the formation of various molecular species in the sol-gel solutions before gelation, determined by the different amount of the dopant used.

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