Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1091250
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dc.contributor.authorMATTOS, B. D.
dc.contributor.authorTARDY, B. L.
dc.contributor.authorPEZHMAN, M.
dc.contributor.authorKÄMÄRÄINEN, T.
dc.contributor.authorLINDER, M.
dc.contributor.authorSCHREINER, W. H.
dc.contributor.authorMAGALHAES, W. L. E.
dc.contributor.authorROJAS, O. J.
dc.date.accessioned2018-05-10T01:06:10Z-
dc.date.available2018-05-10T01:06:10Z-
dc.date.created2018-05-08
dc.date.issued2018
dc.identifier.citationScientific Reports, v. 8, Article 5555, Apr. 2018. 11 p.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1091250-
dc.descriptionBiocides are essential for crop protection, packaging and several other biosystem applications. Therein, properties such as tailored and controlled release are paramount in the development of sustainable biocide delivery systems. We explore the self-similar nano-organized architecture of biogenic silica particles to achieve high biocide payload. The high surface area accessibility of the carrier allowed us to develop an efcient, low energy loading strategy, reaching signifcant dynamic loadings of up to 100mg·g?1. The release rate and responsiveness were tuned by manipulating the interfaces, using either the native hydroxyl surfaces of the carrier or systems modifed with amines or carboxylic acids in high density. We thoroughly evaluated the impact of the carrier-biocide interactions on the release rate as a function of pH, ionic strength and temperature. The amine and carboxyl functionalization strategy led to three-fold decrease in the release rate, while higher responsiveness against important agro-industrial variables. Key to our discoveries, nanostructuring thymol in the biogenic silica endowed systems with controlled, responsive release promoting remarkable, high and localized biocidal activity. The interfacial factors afecting related delivery were elucidated for an increased and localized biocidal activity, bringing a new light for the development of controlled release systems from porous materials.
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectBiogenic silica
dc.subjectBiocide delivery system
dc.subjectSlow release
dc.subjectNanoporous material
dc.subjectChemical surface modification
dc.subjectNatural biocide
dc.subjectNanobiocides
dc.subjectFractal supra structure
dc.subjectBiological activity
dc.subjectMesoporous silica
dc.subjectFunctionalization of nanoparticles
dc.subjectSistema de liberação de biocida
dc.subjectNanotecnologia
dc.subjectSílica biogênica
dc.subjectLiberação lenta
dc.subjectMaterial nanoporoso
dc.subjectBiocida natural
dc.subjectTimol
dc.subjectModificação química de superfície
dc.subjectNanobiocida
dc.subjectSupraestrutura fractal
dc.subjectAtividade biológica
dc.subjectSílica mesoporosa
dc.subjectFuncionalização de nanopartículas
dc.titleControlled biocide release from hierarchically-structured biogenic silica: surface chemistry to tune release rate and responsiveness.
dc.typeArtigo de periódico
dc.date.updated2019-11-07T11:11:11Zpt_BR
dc.subject.nalthesaurusBiocides
dc.subject.nalthesaurusNanotechnology
dc.subject.nalthesaurusThymol
riaa.ainfo.id1091250
riaa.ainfo.lastupdate2019-11-07 -02:00:00
dc.identifier.doi10.1038/s41598-018-23921-2
dc.contributor.institutionBruno D. Mattos, Doutorando da UFPR / Aalto University; Blaise L. Tardy, Aalto University; Mohammadi Pezhman, Aalto University; Tero Kämäräinen, Aalto University; Markus Linder, Aalto University; Wido H. Schreiner, UFPR; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; Orlando J. Rojas, Aalto University.
Aparece nas coleções:Artigo em periódico indexado (CNPF)

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