Artigo de periodico

Evaluation of ZnO/Carbon Xerogel Composite as a Photocatalyst for Solar and Visible Light Degradation of the Rhodamine B Dye (2021)

• Authors:
  • Santos, Gabriela Spirandelli dos
  • Goes, Clarice Moreira
  • Sousa, Juliana Giancoli Martins de
  • Moraes, Nícolas Perciani de
  • Carvalho, Lívia Chaguri e
  • Rodrigues, Liana Alvares
• USP affiliated authors: RODRIGUES, LIANA ALVARES - EEL ; CARVALHO, LIVIA CHAGURI E - EEL ; GOES, CLARICE MOREIRA - EEL ; SANTOS, GABRIELA SPIRANDELLI DOS - EEL ; SOUSA, JULIANA GIANCOLI MARTINS DE - EEL ; MORAES, NÍCOLAS PERCIANI DE - EEL
• Unidade: EEL
• DOI: 10.1166/jnn.2021.18962
• Subjects: FOTOCATÁLISE; ENGENHARIA QUÍMICA
• Keywords: Carbon Xerogel; Photocatalysis; Rhodamine B; Zinc Oxide
• Language: Inglês
• Abstract: This study is focused on the evaluation of the Rhodamine B photodegradation using ZnO/carbon xerogel composite as a photocatalyst, in order to enhance the photocatalytic process efficiency under visible light. The proposed synthesis employs tannin as a precursor for the carbon xerogel, which enhances the economic and environmental aspect of the composite. The synthesized materials have the hexagonal structure of the zinc oxide (wurtzite), which is homogeneously distributed on the carbonaceous matrix. The diffuse reflectance test shows that light absorption was significantly enhanced for the composite. The solar light-driven photodegradation results revealed that the synthesized composite achieved virtually complete degradation of the dye present in the solution in less than 3 h, in all concentrations tested. The results of visible light driven photocatalysis showed that the carbonaceous material presents better photoactivity than the pure oxide (70% and 40% degradation of Rhodamine B, respectively), due to the synergistic effect between the carbon xerogel and zinc oxide on the properties of the composite. The photocatalytic mechanism main active species are the photogenerated vacancies and superoxide radicals.
• Imprenta:
  • Publisher: ASP
  • Publisher place: Valencia-CA
  • Date published: 2021
• Source:
  • Título: Journal of nanoscience and nanotechnology
  • ISSN: 1533-4880
  • Volume/Número/Paginação/Ano: v.21, n.4, p.2292-2301, 2021

Informações sobre o DOI: 10.1166/jnn.2021.18962 (Fonte: oaDOI API)
• Este periódico é de acesso aberto
• Este artigo NÃO é de acesso aberto
  

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• ABNT

  SANTOS, Gabriela Spirandelli dos et al. Evaluation of ZnO/Carbon Xerogel Composite as a Photocatalyst for Solar and Visible Light Degradation of the Rhodamine B Dye. Journal of nanoscience and nanotechnology, v. 21, n. 4, p. 2292-2301, 2021Tradução . . Disponível em: https://doi.org/10.1166/jnn.2021.18962. Acesso em: 10 fev. 2026.

• APA

  Santos, G. S. dos, Goes, C. M., Sousa, J. G. M. de, Moraes, N. P. de, Carvalho, L. C. e, & Rodrigues, L. A. (2021). Evaluation of ZnO/Carbon Xerogel Composite as a Photocatalyst for Solar and Visible Light Degradation of the Rhodamine B Dye. Journal of nanoscience and nanotechnology, 21( 4), 2292-2301. doi:10.1166/jnn.2021.18962

• NLM

  Santos GS dos, Goes CM, Sousa JGM de, Moraes NP de, Carvalho LC e, Rodrigues LA. Evaluation of ZnO/Carbon Xerogel Composite as a Photocatalyst for Solar and Visible Light Degradation of the Rhodamine B Dye [Internet]. Journal of nanoscience and nanotechnology. 2021 ;21( 4): 2292-2301.[citado 2026 fev. 10 ] Available from: https://doi.org/10.1166/jnn.2021.18962

• Vancouver

  Santos GS dos, Goes CM, Sousa JGM de, Moraes NP de, Carvalho LC e, Rodrigues LA. Evaluation of ZnO/Carbon Xerogel Composite as a Photocatalyst for Solar and Visible Light Degradation of the Rhodamine B Dye [Internet]. Journal of nanoscience and nanotechnology. 2021 ;21( 4): 2292-2301.[citado 2026 fev. 10 ] Available from: https://doi.org/10.1166/jnn.2021.18962

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