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| Registros recuperados : 9 | |
| 2. |  | MEDEIROS, A. M. Z.; KHAN, L. U.; SILVA, G. H. da; OSPINA, C. A.; ALVES, O. L.; CASTRO, V. L. S. S. de; MARTINEZ, D. S. T. Graphene oxide-silver nanoparticle hybrid material: an integrated nanosafety study in zebrafish embryos. Ecotoxicology and Environmental Safety, v. 209, article 111776, 2021.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 3. | | COA, F.; CLEMENTE, Z.; LOPES, J. R.; RODRIGUES NETO, L. L.; ALVES, O. L.; CASTRO, V. L. S. S. de; BARBIERI, E.; MARTINEZ, D. S. T. Green mecanochemical process for carbon nanotubes coating with humic acid: application and ecotoxicity evaluation. In: ENCONTRO ANUAL DA SOCIEDADE BRASILEIRA DE PESQUISA EM MATERIAIS, 15., 2016, Campinas. [Abstracts...] Rio de Janeiro: Sociedade Brasileira de Pesquisas em Materiais, 2016. Resumo B6SZ.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 4. | | COA, F.; CLEMENTE, Z.; LOPES, J. R.; RODRIGUES NETO, L. L.; CASTRO, V. L. S. S. de; ALVES, O. L.; BARBIERI, E.; MARTINEZ, D. S. T. Nanotubos de carbono modificados com ácido húmico: preparação, caracterização e toxicidade em embriões de zebrafish. In: CONGRESSO BRASILEIRO DE ECOTOXICOLOGIA, 14., 2016, Curitiba. Anais.... Curitiba: Sociedade Brasileira de Ecotoxicologia. p. 887-888.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 5. | | RODRIGUES, A. G.; PING, L. Y.; MARCATO, P. D.; ALVES, O. L.; SILVA, M. C. P.; RUIZ, R. C.; MELO, I. S. de; TASIC, L.; SOUZA, A. O. de. Biogenic antimicrobial silver nanoparticles produced by fungi. Applied Microbiology and Biotechnology, New York, v. 97, p. 775-782, 2013.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 6. | | DURÁN, N.; MARTINEZ, D. S. T.; JUSTO, G. Z.; LIMA, R.; CASTRO, V. L. S. S. de; UMBUZEIRO, G. A.; BARBIERI, E.; DURÁN, M.; MELO, P. S.; ALVES, O. L. Interlab study on nanotoxicology of representative graphene oxide. In: INTERNATIONAL CONFERENCE ON SAFE PRODUCTION AND USE OF NANOMATERIALS, 4, 2014, Grenoble. Book of Abstract... Grenoble: Plate-Forme Nano Sécurité, 2014.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 7. | | DURÁN, N.; MARTINEZ, D. S. T.; JUSTO, G. Z.; LIMA, R. de; CASTRO, V. L. S. S. de; UMBUZEIRO, G. de A.; BARBIERI, E.; DURÁN, M.; MELO, P. da S.; ALVES, O. L.; FÁVARO, W. J. Interlab study on nanotoxicology of representative graphene oxide. Journal of Physics, Bristol, v. 617, p. 1-9, 2015. Edition of the proceedings 4th International Conference on Safe Production and Use Nanomaterials (Nanosafe 2014) 18-20 November 2014, held a Grenoble, France.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 8. | | 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. Coating carbon nanotubes with humic acid using an eco-friendly mechanochemical method: Application for Cu(II) ions removal from water and aquatic ecotoxicity. Science of the Total Environment, v. 607-608, p. 1479-1486, 2017.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 9. | | MEDEIROS, A. M. Z.; KHAN, L. U.; DELITE, F. S.; COSTA, C. A.; OSPINA, C. A.; ALVES, O. L.; CASTRO, V. L. S. S. de; MARTINEZ, D. S. T. Nanoecotoxicity of GO@AgNPs nanohybrid on zebrafish embryos: influence of natural organic matter and chorion membrane removal. In: INTERNATIONAL CONFERENCE ON HEALTH AND SAFETY ISSUES RELATED TO NANOMATERIALS FOR A SOCIALLY RESPONSIBLE APPROACH - NANOSAFE, 6., 2018, Grenoble. Book of Abstracts... Grenoble: 2018. Ref. A91883DM. p. 116.| Biblioteca(s): Embrapa Meio Ambiente. |
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| Registros recuperados : 9 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
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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Circulação/Nível: |
A - 1 |
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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 |
|
Marc: |
LEADER 03222naa a2200397 a 4500
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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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