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Title in Portuguese: New ZnO@Cardanol porphyrin composite nanomaterials with enhanced photocatalytic capability under solar light irradiation
Author: Ribeiro, Viviane Gomes Pereira
Marcelo, Ana Maria Pereira
Silva, Kássia Teixeira da
Silva, Fernando Luiz Firmino da
Mota, João Paulo Ferreira
Nascimento, João Paulo Costa do
Sombra, Antônio Sérgio Bezerra
Clemente, Claudenilson da Silva
Mele, Giuseppe
Carbone, Luigi
Mazzetto, Selma Elaine
Keywords: Fotocatálise
Radiação solar
Issue Date: 2017
Publisher: Materials
Citation: RIBEIRO, V. G. P.; MARCELO, A. M. P.; SILVA, K. T.; SILVA, F. L. F.; MOTA, J. P. F.; NASCIMENTO, J. P. C.; SOMBRA, A. S. B.; CLEMENTE, C. S.; MELE, G.; CARBONE, L.; MAZZETTO, S. E. Nanomaterials with enhanced photocatalytic capability under solar light irradiation. Materials, Basel, v. 10, n. 10, 1114, 2017.
Abstract: This work describes the synthesis, characterization, and photocatalytic activity of new composite nanomaterials based on ZnO nanostructures impregnated by lipophlilic porphyrins derived from cashew nut shell liquid (CNSL). The obtained nanomaterials were characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (DRS), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and steady-state photoluminescence spectra (PL). The results confirm nanostructures showing average diameter of 55 nm and an improved absorption in the visible region. Further, the FTIR analysis proved the existence of non-covalent interactions between the porphyrin molecules and ZnO. The photocatalytic activity of prepared photocatalysts was investigated by degradation of rhodamine B (RhB) in aqueous solution under visible light irradiation and natural sunlight. It was demonstrated that the photocatalytic activity increases in the presence of the porphyrins and, also, depends on the irradiation source. The development of composite photocatalysts based on porphyrins derived from CNSL provides an alternative approach to eliminate efficiently toxic wastes from water under ambient conditions.
metadata.dc.type: Artigo de Periódico
Appears in Collections:DFI - Artigos publicados em revista científica

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