|
Registro Completo |
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
31/08/2018 |
|
Data da última atualização: |
07/11/2019 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
MATTOS, B. D.; GRECA, L. G.; TARDY, B. L.; MAGALHAES, W. L. E.; ROJAS, O. J. |
|
Afiliação: |
Bruno D. Mattos, Aalto University; Luiz G. Greca, Aalto University; Blaise L. Tardy, Aalto University; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; Orlando J. Rojas, Aalto University. |
|
Título: |
Green formation of robust supraparticles for cargo protection and hazards control in natural environments. |
|
Ano de publicação: |
2018 |
|
Fonte/Imprenta: |
Small, v. 14, n. 29, article 1801256, 2018. 10 p. |
|
DOI: |
10.1002/smll.201801256 |
|
Idioma: |
Inglês |
|
Conteúdo: |
In parallel with important technological advances, nanoparticles have brought numerous environmental and toxicological challenges due to their high mobility and nonspecific surface activity. The hazards associated with nanoparticles can be significantly reduced while simultaneously keeping their inherent benefits by superstructuring. In this study, a low?temperature and versatile methodology is employed to structure nanoparticles into controlled morphologies from biogenic silica, used as a main building block, together with cellulose nanofibrils, which promote cohesion. The resultant superstructures are evaluated for cargo loading/unloading of a model, green biomolecule (thymol), and for photo?accessibility and mobility in soil. The bio?based superstructures resist extremely high mechanical loading without catastrophic failure, even after severe chemical and heat treatments. Additionally, the process allows pre and in situ loading, and reutilization, achieving remarkable dynamic payloads as high as 90 mg g?1. The proposed new and facile methodology is expected to offer a wide range of opportunities for the application of superstructures in sensitive and natural environments. |
|
Palavras-Chave: |
Catastrophic failures; Cellulose nanofibrils; Chemical-and-heat treatment; Controlled morphology; Controlled release; Hazards; Lançamento controlado; Nanofiblrila de celulose; Nanopartícula; Nanotoxicologia; Nanotoxicology; Self assembly; Soft Chemistry; Technological advances. |
|
Thesagro: |
Sílica. |
|
Thesaurus Nal: |
Nanoparticles; Temperature. |
|
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
|
Marc: |
LEADER 02335naa a2200385 a 4500
001 2094933
005 2019-11-07
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1002/smll.201801256$2DOI
100 1 $aMATTOS, B. D.
245 $aGreen formation of robust supraparticles for cargo protection and hazards control in natural environments.$h[electronic resource]
260 $c2018
520 $aIn parallel with important technological advances, nanoparticles have brought numerous environmental and toxicological challenges due to their high mobility and nonspecific surface activity. The hazards associated with nanoparticles can be significantly reduced while simultaneously keeping their inherent benefits by superstructuring. In this study, a low?temperature and versatile methodology is employed to structure nanoparticles into controlled morphologies from biogenic silica, used as a main building block, together with cellulose nanofibrils, which promote cohesion. The resultant superstructures are evaluated for cargo loading/unloading of a model, green biomolecule (thymol), and for photo?accessibility and mobility in soil. The bio?based superstructures resist extremely high mechanical loading without catastrophic failure, even after severe chemical and heat treatments. Additionally, the process allows pre and in situ loading, and reutilization, achieving remarkable dynamic payloads as high as 90 mg g?1. The proposed new and facile methodology is expected to offer a wide range of opportunities for the application of superstructures in sensitive and natural environments.
650 $aNanoparticles
650 $aTemperature
650 $aSílica
653 $aCatastrophic failures
653 $aCellulose nanofibrils
653 $aChemical-and-heat treatment
653 $aControlled morphology
653 $aControlled release
653 $aHazards
653 $aLançamento controlado
653 $aNanofiblrila de celulose
653 $aNanopartícula
653 $aNanotoxicologia
653 $aNanotoxicology
653 $aSelf assembly
653 $aSoft Chemistry
653 $aTechnological advances
700 1 $aGRECA, L. G.
700 1 $aTARDY, B. L.
700 1 $aMAGALHAES, W. L. E.
700 1 $aROJAS, O. J.
773 $tSmall$gv. 14, n. 29, article 1801256, 2018. 10 p.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
