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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
08/12/2017 |
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Data da última atualização: |
23/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CÔA, F.; STRAUSS, M.; CLEMENTE, Z.; RODRIGUES NETO, L. L.; LOPES, J. R.; ALENCAR, R. S.; SOUZA FILHO, A. G.; ALVES, O. L.; CASTRO, V. L. S. S. de; BARBIERI, E.; MARTINEZ, D. S. T. |
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Afiliação: |
FRANCINE COA, LNNano-CNPEM; MATHIAS STRAUSS, LNNano-CNPEM; ZAIRA CLEMENTE, LNNano-CNPEM; LAIS LUZ RODRIGUES NETO, LNNano-CNPEM; JOSIAS ROGERIO LOPES, LNNano-CNPEM; RAFAEL SILVA ALENCAR, UFC; ANTONIO GOMES SOUZA FILHO, UFC; OSWALDO LUIZ ALVES, IQ-UNICAMP; VERA LUCIA SCHERHOLZ S DE CASTRO, CNPMA; EDSON BARBIERI, Instituto de Pesca - APTA Cananeía; DIEGO STEGANI TEODORO MARTINEZ, LNNano-CNPEM. |
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Título: |
Coating carbon nanotubes with humic acid using an eco-friendly mechanochemical method: Application for Cu(II) ions removal from water and aquatic ecotoxicity. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Science of the Total Environment, v. 607-608, p. 1479-1486, 2017. |
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DOI: |
http://dx.doi.org/10.1016/j.scitotenv.2017.07.045 |
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Idioma: |
Inglês |
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Conteúdo: |
In this work, industrial grade multi-walled carbon nanotubes (MWCNT) were coated with humic acid (HA) for the first time by means of a milling process, which can be considered an eco-friendly mechanochemical method to prepare materials and composites. The HA-MWCNT hybrid material was characterized by atomic force micros- copy (AFM), scanning electron microscopies (SEM and STEM), X-ray photoelectron spectroscopy (XPS), termogravimetric analysis (TGA), and Raman spectroscopy. STEM and AFM images demonstrated that the MWCNTs were efficiently coated by the humic acid, thus leading to an increase of 20% in the oxygen content at the nanotube surface as observed by the XPS data. After the milling process, the carbon nanotubes were short- ened as unveiled by SEM images and the values of ID/IG intensity ratio increased due to shortening of the nano- tubes and increasing in the number defects at the graphitic structure of carbon nanotubes walls. The analysis of TGA data showed that the quantity of the organic matter of HA on the nanotube surface was 25%. The HA coating was responsible to favor the dispersion of MWCNTs in ultrapure water (i.e. −42 mV, zeta-potential value) and to improve their capacity for copper removal. HA-MWCNTs hybrid material adsorbed 2.5 times more Cu(II) ions than oxidized MWCNTs with HNO3, thus evidencing that it is a very efficient adsorbent material for removing copper ions from reconstituted water. The HA-MWCNTs hybrid material did not show acute ecotoxicity to the tested aquatic model organisms (Hydra attenuata, Daphnia magna, and Danio rerio embryos) up to the highest concentration evaluated (10 mg L−1). The results allowed concluding that the mechanochemical method is effec- tive to coat carbon nanotubes with humic acid, thus generating a functional hybrid material with low aquatic tox- icity and great potential to be applied in environmental nanotechnologies such as the removal of heavy metal ions from water. MenosIn this work, industrial grade multi-walled carbon nanotubes (MWCNT) were coated with humic acid (HA) for the first time by means of a milling process, which can be considered an eco-friendly mechanochemical method to prepare materials and composites. The HA-MWCNT hybrid material was characterized by atomic force micros- copy (AFM), scanning electron microscopies (SEM and STEM), X-ray photoelectron spectroscopy (XPS), termogravimetric analysis (TGA), and Raman spectroscopy. STEM and AFM images demonstrated that the MWCNTs were efficiently coated by the humic acid, thus leading to an increase of 20% in the oxygen content at the nanotube surface as observed by the XPS data. After the milling process, the carbon nanotubes were short- ened as unveiled by SEM images and the values of ID/IG intensity ratio increased due to shortening of the nano- tubes and increasing in the number defects at the graphitic structure of carbon nanotubes walls. The analysis of TGA data showed that the quantity of the organic matter of HA on the nanotube surface was 25%. The HA coating was responsible to favor the dispersion of MWCNTs in ultrapure water (i.e. −42 mV, zeta-potential value) and to improve their capacity for copper removal. HA-MWCNTs hybrid material adsorbed 2.5 times more Cu(II) ions than oxidized MWCNTs with HNO3, thus evidencing that it is a very efficient adsorbent material for removing copper ions from reconstituted water. The HA-MWCNTs hybrid material did not show acute ecoto... Mostrar Tudo |
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Palavras-Chave: |
Ácido húmico; Ball milling; Despoluição da água; Functionalization; Mechanochemistry; Nanoecotoxicology; Nanotubos de carbono. |
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Thesagro: |
Toxidez; Tratamento da água. |
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Thesaurus Nal: |
Carbon nanotubes; Humic acids; Nanotechnology. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 03222naa a2200397 a 4500
001 2081952
005 2018-01-23
008 2017 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.scitotenv.2017.07.045$2DOI
100 1 $aCÔA, F.
245 $aCoating carbon nanotubes with humic acid using an eco-friendly mechanochemical method$bApplication for Cu(II) ions removal from water and aquatic ecotoxicity.$h[electronic resource]
260 $c2017
520 $aIn this work, industrial grade multi-walled carbon nanotubes (MWCNT) were coated with humic acid (HA) for the first time by means of a milling process, which can be considered an eco-friendly mechanochemical method to prepare materials and composites. The HA-MWCNT hybrid material was characterized by atomic force micros- copy (AFM), scanning electron microscopies (SEM and STEM), X-ray photoelectron spectroscopy (XPS), termogravimetric analysis (TGA), and Raman spectroscopy. STEM and AFM images demonstrated that the MWCNTs were efficiently coated by the humic acid, thus leading to an increase of 20% in the oxygen content at the nanotube surface as observed by the XPS data. After the milling process, the carbon nanotubes were short- ened as unveiled by SEM images and the values of ID/IG intensity ratio increased due to shortening of the nano- tubes and increasing in the number defects at the graphitic structure of carbon nanotubes walls. The analysis of TGA data showed that the quantity of the organic matter of HA on the nanotube surface was 25%. The HA coating was responsible to favor the dispersion of MWCNTs in ultrapure water (i.e. −42 mV, zeta-potential value) and to improve their capacity for copper removal. HA-MWCNTs hybrid material adsorbed 2.5 times more Cu(II) ions than oxidized MWCNTs with HNO3, thus evidencing that it is a very efficient adsorbent material for removing copper ions from reconstituted water. The HA-MWCNTs hybrid material did not show acute ecotoxicity to the tested aquatic model organisms (Hydra attenuata, Daphnia magna, and Danio rerio embryos) up to the highest concentration evaluated (10 mg L−1). The results allowed concluding that the mechanochemical method is effec- tive to coat carbon nanotubes with humic acid, thus generating a functional hybrid material with low aquatic tox- icity and great potential to be applied in environmental nanotechnologies such as the removal of heavy metal ions from water.
650 $aCarbon nanotubes
650 $aHumic acids
650 $aNanotechnology
650 $aToxidez
650 $aTratamento da água
653 $aÁcido húmico
653 $aBall milling
653 $aDespoluição da água
653 $aFunctionalization
653 $aMechanochemistry
653 $aNanoecotoxicology
653 $aNanotubos de carbono
700 1 $aSTRAUSS, M.
700 1 $aCLEMENTE, Z.
700 1 $aRODRIGUES NETO, L. L.
700 1 $aLOPES, J. R.
700 1 $aALENCAR, R. S.
700 1 $aSOUZA FILHO, A. G.
700 1 $aALVES, O. L.
700 1 $aCASTRO, V. L. S. S. de
700 1 $aBARBIERI, E.
700 1 $aMARTINEZ, D. S. T.
773 $tScience of the Total Environment$gv. 607-608, p. 1479-1486, 2017.
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Embrapa Meio Ambiente (CNPMA) |
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| Registros recuperados : 28 | |
| 3. |  | BRAZ FILHO, R.; GOTTLIEB, O. R.; MAGALHAES, M. T.; MORAES, A. A. Isoflavonoides de Osteophleum plalyspermum. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA PARA O PROGRESSO DA CIENCIA, 28., Brasilia, 1976. Resumos... Ciencia e Cultura, v. 28, n. 9, p. 185, 1976. Suplemento.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 7. | | ALMEIDA, M. E. L.; BRAZ FILHO, R.; GOTTLIEB, O. R.; MAGALHAES, M. T. Fenilpropanoides de Piper aduncum. ln: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA PARA O PROGESSO DA CIENCIA, 29., 1977, Sao Paulo. Resumos... Ciencia e Cultura, v. 29, n. 10, p. 440, 1977. Suplemento.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 8. | | MAGALHAES, M. T.; MENDES, P. H.; WILBERG, V. C.; BRAZ FILHO, R.; ANDRADE, C. M. S.; GOTTLIEB, O. R. Comparative study of essential oils from Brazilian Lauraceae and Piperaceae. ln: INTERNATIONAL CONGRESS OF ESSENTIAL OILS, 8., 1977, Kyoto, Japao, 1977. Abstracts. Kyoto, 1977.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 9. | | VIANE, M. C. E.; ALVES, L. V.; ALEGRIO, L. V.; BRAZ FILHO, R.; CASTRO, N. R.; GODOY, R. L. O. Atividade antimicrobiana e composicao quimica do oleo essencial de Eugenia speciosa Camb. (Myrtaceae). In: SIMPOSIO DE PLANTAS MEDICINAIS DO BRASIL, 15., 1998, Aguas de Lindoia. Programa... Aguas de Lindoia, 1998. p.45.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 10. | | CUNHA, C. P.; FELBERG, I.; GODOY, R. L. O.; FERREIRA, J. N.; OLIVEIRA, D. R.; PACHECO, S.; BRAZ FILHO, R. Avaliação da estabilidade das isoflavonas em extrato de soja. In: CONGRESSO BRASILEIRO DE SOJA, 6., 2012, Cuiabá. Soja: integração nacional e desenvolvimento sustentável: anais. Brasília, DF: Embrapa, 2012. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 11. | | CUNHA, C. P. da; BRAZ FILHO, R.; GODOY, R. L. de O.; FELBERG, I.; PACHECO, S.; OLIVEIRA, D. R. de; PEREIRA, J. de N. Avaliação de diferentes colunas cromatográficas na separação de isoflavonas de extrato de soja. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE QUÍMICA, 35., 2012, Águas de Lindóia. Responsabilidade, ética e progresso social: trabalhos. São Paulo: SBQ, 2012. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 12. | | BRAZ FILHO, R.; GOTTLIEB, O. R.; MAGALHAES, M. T.; MAlA, J. G. S.; MENDES, P. H.; OLIVEIRA, A. B.; OLIVEIRA, G. G.; WILBERG, V. C. Isoflavonas e constituintes de oleo essencial de duas especies do genero Monopterix. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA PARA O PROGRESSO DA CIENCIA, 28., Brasilia, 1976. Resumos... Ciencia e Cultura, v. 28, n. 9, p. 186, 1976. Suplemento.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 13. | | ALBUQUERQUE, F. B.; BRAZ FILHO, R.; GOTTLIEB, O. R.; MAGALHAES, M. T.; MAlA, J. G. S.; OLIVEIRA, G G.; WILBERG, V. C. Isoflavone evolution In Monopterix. Phytochemistry, New York, v. 20, p. 235-6, 1981.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 14. | | CUNHA, C. P. da; BRAZ FILHO, R.; GODOY, R. L. de O.; FELBERG, I.; PACHECO, S.; OLIVEIRA, D. R. de; PEREIRA, J. de N. Isolamento de isoflavonas da soja por CLAE e identificação por ressonância magnética nuclear e espectrometria de massas. In: CONGRESSO LATINO AMERICANO DE CROMATOGRAFIA E TÉCNICAS RELACIONADAS, 14., 2012, Florianópolis. Livro de resumos. [S.l.: s.n.], 2012. p. 319.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 15. | | BRAZ FILHO, R.; GOTTLIEB, O. R.; MORAES, A. A.; PEDREIRA, G.; PINHO, S. L. V.; MAGALHAES, M. T.; RIBEIRO, M. N. S. The Chemistry of Brazilian Myristicaceae. IX. Isoflavonoids from Amazonian species. Lloydia, Columbus, v. 40, p. 236-240, 1977.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 16. | | SENA FILHO, J. G. de; SILVA, M. S. da; TAVARES, J. F.; OLIVEIRA, S. L.; ROMERO, M. A. V.; XAVIER, H. S.; BARBOSA-FILHO, J. M.; BRAZ-FILHO, R. Cytotoxic evaluation of pungencine: A new tropane alkaloid from the roots of erythroxylum pungens O. E. Schulz. Helvetica Chimica Acta, v. 93, 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 17. | | SILVA, A. K. O.; PINTO, F. C. L.; CANUTO, K. M.; BRAZ-FILHO, R.; SILVA, R. A. C.; SANTOS, F. A.; MONTEIRO, N. K. V.; SILVEIRA, E. R.; PESSOA, O. D. L. Anti-inflammatory meroterpenoids of cordia glazioviana (boraginaceae). Journal of the Brazilian Chemical Society, v. 32 n. 7, p. 1424-1434, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 18. | | SOUZA, L. G. S.; ALMEIDA, M. C. S.; LEMOS, T. L. G.; RIBEIRO, P. R. V.; CANUTO, K. M.; BRAZ-FILHO, R.; CISTIA, C. N. DEL; SANT'ANNA, C. M. R.; BARRETO, F. S.; MORAES, M. O. de. Brazoides A-D, new alkaloids from Justicia gendarussa Burm. F. species. Journal of the Brazilian Chemical Society, v. 28, n. 7, p. 1281-1287, 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 19. | | FAÇANHA, A. R.; FAÇANHA, A. L. O.; OLIVARES, F. L.; GURIDI, F.; SANTOS, G. de A.; VELLOSO, A. C. X.; RUMJANEK, V. M.; BRASIL, F.; SCHRIPSEMA, J.; BRAZ-FILHO, R.; OLIVEIRA, M. A de; CANELLAS, L. P. Bioatividade de ácidos húmicos: efeitos sobre o desenvolvimento radicular e sobre a bomba de prótons da membrana plasmática. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 37, n. 9, p. 1301-1310, set. 2002 Título em inglês: Humic acids bioactivity: effects on root development and on the plasma membrane proton pump.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 20. | | CANELLAS, L. P.; ESPINDOLA, J. A. A.; REZENDE, C. E.; CAMARGO, P. B. de; ZANDONADI, D. B.; RUMJANEK, V. M.; GUERRA, J. G. M.; TEIXEIRA, M. G.; BRAZ-FILHO, R. Organic matter quality in a soil cultivated with perennial herbaceous legumes. Scientia Agricola, Piracicaba, v. 61, n. 1, p. 53-61, jan./fev. 2004. Qualidade da matéria orgânica de um solo cultivado com leguminosas herbáceas perenes.| Biblioteca(s): Embrapa Agrobiologia. |
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| Registros recuperados : 28 | |
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