Staff View: Carbon nitride nanosheets magnetically decorated with Fe3O4 nanoparticles by homogeneous precipitation : adsorption-photocatalytic performance and acute toxicity assessment

Carbon nitride nanosheets magnetically decorated with Fe3O4 nanoparticles by homogeneous precipitation : adsorption-photocatalytic performance and acute toxicity assessment

In the present study, graphitic carbon nitride (g-C3N4) was decorated with Fe3O4 nanoparticles by using an alternative, simple and environmentally friendly method of homogeneous precipitation with urea. The magnetic nanocomposite was characterized by transmission electron microscopy (TEM), scanning...

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Main Authors:	Rosa, Eliane V., Fascineli, Maria L., Silva, Izabel C. R. da, Rodrigues, Marcelo O., Chaker, Juliano Alexandre, Grisolia, Cesar Koppe, Moya, Sergio E., Campos, Alex F. C., Sousa, Marcelo Henrique
Format:	Artigo
Language:	Inglês
Published:	Elsevier B. V. 2021
Subjects:	Nanocompósitos Síntese verde Fotocatálise Fotodegradação
Online Access:	https://repositorio.unb.br/handle/10482/42160 https://doi.org/10.1016/j.enmm.2021.100549
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spelling	ir-10482-421602021-10-20T22:29:43Z Carbon nitride nanosheets magnetically decorated with Fe3O4 nanoparticles by homogeneous precipitation : adsorption-photocatalytic performance and acute toxicity assessment Rosa, Eliane V. Fascineli, Maria L. Silva, Izabel C. R. da Rodrigues, Marcelo O. Chaker, Juliano Alexandre Grisolia, Cesar Koppe Moya, Sergio E. Campos, Alex F. C. Sousa, Marcelo Henrique Nanocompósitos Síntese verde Fotocatálise Fotodegradação In the present study, graphitic carbon nitride (g-C3N4) was decorated with Fe3O4 nanoparticles by using an alternative, simple and environmentally friendly method of homogeneous precipitation with urea. The magnetic nanocomposite was characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM-EDS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller isotherms (BET), Zetametry, vibrating sample magnetometry, UV–vis absorption spectroscopy, and photoluminescence spectroscopy (PL). The acute toxicological effects of nanomaterials were evaluated in embryos/larvae of the zebrafish (Danio rerio). The performance of the nanocomposite for removal of methylene blue (MB), as a model pollutant, from water in different pH conditions was compared to that of pure g-C3N4 and a magnetic composite elaborated using conventional coprecipitation with NH4OH. The results showed that the nanocomposite synthesized with the new approach showed the best performance, corresponding to a removal rate of 98.3% in the alkaline medium. Regeneration studies showed that the proposed nanocomposite can be easily recovered by magnetic assistance and can be reused, keeping a good removal efficiency. The toxicological results showed that nanomaterials, pure and decorated, presented no acute toxicological effects in zebrafish at the concentrations recommended by OECD 236. 2021-10-20T22:20:12Z 2021-10-20T22:20:12Z 2021-08-08 Artigo ROSA, Eliane V. et al. Carbon nitride nanosheets magnetically decorated with Fe3O4 nanoparticles by homogeneous precipitation: adsorption-photocatalytic performance and acute toxicity assessment. Environmental Nanotechnology, Monitoring & Management, v. 16, 100549, dez. 2021. DOI: https://doi.org/10.1016/j.enmm.2021.100549. https://repositorio.unb.br/handle/10482/42160 https://doi.org/10.1016/j.enmm.2021.100549 Inglês https://www.sciencedirect.com/science/article/abs/pii/S2215153221001240?via%3Dihub Acesso Restrito Elsevier B. V.
institution	REPOSITORIO UNB
collection	REPOSITORIO UNB
language	Inglês
topic	Nanocompósitos Síntese verde Fotocatálise Fotodegradação
spellingShingle	Nanocompósitos Síntese verde Fotocatálise Fotodegradação Rosa, Eliane V. Fascineli, Maria L. Silva, Izabel C. R. da Rodrigues, Marcelo O. Chaker, Juliano Alexandre Grisolia, Cesar Koppe Moya, Sergio E. Campos, Alex F. C. Sousa, Marcelo Henrique Carbon nitride nanosheets magnetically decorated with Fe3O4 nanoparticles by homogeneous precipitation : adsorption-photocatalytic performance and acute toxicity assessment
description	In the present study, graphitic carbon nitride (g-C3N4) was decorated with Fe3O4 nanoparticles by using an alternative, simple and environmentally friendly method of homogeneous precipitation with urea. The magnetic nanocomposite was characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM-EDS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller isotherms (BET), Zetametry, vibrating sample magnetometry, UV–vis absorption spectroscopy, and photoluminescence spectroscopy (PL). The acute toxicological effects of nanomaterials were evaluated in embryos/larvae of the zebrafish (Danio rerio). The performance of the nanocomposite for removal of methylene blue (MB), as a model pollutant, from water in different pH conditions was compared to that of pure g-C3N4 and a magnetic composite elaborated using conventional coprecipitation with NH4OH. The results showed that the nanocomposite synthesized with the new approach showed the best performance, corresponding to a removal rate of 98.3% in the alkaline medium. Regeneration studies showed that the proposed nanocomposite can be easily recovered by magnetic assistance and can be reused, keeping a good removal efficiency. The toxicological results showed that nanomaterials, pure and decorated, presented no acute toxicological effects in zebrafish at the concentrations recommended by OECD 236.
format	Artigo
author	Rosa, Eliane V. Fascineli, Maria L. Silva, Izabel C. R. da Rodrigues, Marcelo O. Chaker, Juliano Alexandre Grisolia, Cesar Koppe Moya, Sergio E. Campos, Alex F. C. Sousa, Marcelo Henrique
author_sort	Rosa, Eliane V.
title	Carbon nitride nanosheets magnetically decorated with Fe3O4 nanoparticles by homogeneous precipitation : adsorption-photocatalytic performance and acute toxicity assessment
title_short	Carbon nitride nanosheets magnetically decorated with Fe3O4 nanoparticles by homogeneous precipitation : adsorption-photocatalytic performance and acute toxicity assessment
title_full	Carbon nitride nanosheets magnetically decorated with Fe3O4 nanoparticles by homogeneous precipitation : adsorption-photocatalytic performance and acute toxicity assessment
title_fullStr	Carbon nitride nanosheets magnetically decorated with Fe3O4 nanoparticles by homogeneous precipitation : adsorption-photocatalytic performance and acute toxicity assessment
title_full_unstemmed	Carbon nitride nanosheets magnetically decorated with Fe3O4 nanoparticles by homogeneous precipitation : adsorption-photocatalytic performance and acute toxicity assessment
title_sort	carbon nitride nanosheets magnetically decorated with fe3o4 nanoparticles by homogeneous precipitation : adsorption-photocatalytic performance and acute toxicity assessment
publisher	Elsevier B. V.
publishDate	2021
url	https://repositorio.unb.br/handle/10482/42160 https://doi.org/10.1016/j.enmm.2021.100549
_version_	1715958326212165632
score	13.657419

Carbon nitride nanosheets magnetically decorated with Fe3O4 nanoparticles by homogeneous precipitation : adsorption-photocatalytic performance and acute toxicity assessment

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