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VIS-active TiO2 films decorated by expanded graphite: impact of the exfoliation time on the photocatalytic behaviour.
Bento, Rodrigo Teixeira; Correa, Olandir Vercino; Gastelois, Pedro Lana; Pillis, Marina Fuser.
Afiliação
  • Bento RT; Nuclear and Energy Research Institute, IPEN-CNEN/SP, University of São Paulo, São Paulo, Brazil.
  • Correa OV; Nuclear and Energy Research Institute, IPEN-CNEN/SP, University of São Paulo, São Paulo, Brazil.
  • Gastelois PL; Nuclear Technology Development Center, CDTN-CNEN/MG, Federal University of Minas Gerais, Belo Horizonte, Brazil.
  • Pillis MF; Nuclear and Energy Research Institute, IPEN-CNEN/SP, University of São Paulo, São Paulo, Brazil.
Environ Technol ; 45(10): 2022-2033, 2024 Apr.
Article em En | MEDLINE | ID: mdl-36576790
TiO2/C nanocomposite films were applied on water treatment. Expanded graphite nanosheets (EG) were obtained by UVC-assisted liquid-phase exfoliation technique, without the addition of acids, surfactants, or aggressive oxidizing agents, which characterizes the process as an eco-friendly method. The carbon nanosheets were synthesized directly from graphite bulk at different times and deposited on TiO2 films surface by airbrush spray coating method, forming a TiO2/C heterojunction. The increase in the exfoliation time promoted a more efficient photocatalytic dye removal under visible light. Morphological modifications, changes in the electronic structure, and wide range of light absorption were observed from the TiO2/C heterojunction formation. The results showed that hybrid TiO2/C supported photocatalyst is a promise alternative for practical photocatalytic applications under sunlight.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Nanocompostos / Grafite Idioma: En Revista: Environ Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Nanocompostos / Grafite Idioma: En Revista: Environ Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido