About: Mineralogy of halloysites and their interaction with porphyrine

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.ceramics-silikaty.cz/2013/pdf/2013_03_243.pdf
Description	Samples representing two modifications of halloysites, dehydrated (7 angstrom) and hydrated (10 angstrom) forms, respectively, were examined with the aim to select suitable candidates for to be used as carriers of porphyrine photoactive molecules. The samples were analysed by powder X-ray diffraction (pXRD), infrared spectroscopy (FT-IR), and high resolution transmission electron microscopy (HRTEM). Chemical composition was also determined. For the determination of cationic exchange capacity (CEC) the silver thiourea method (AgTU) was used. Silver cations concentrations in the solution before and after the interaction were determined by atomic absorption spectrometry (AAS). By the interaction of two pure hydrated halloysites with porphyrine it was found that porphyrine does not intercalate the interlayer space, but it is adsorbed on the outer surface of halloysite. This interaction changed the colour of clay sample from white to green. The changes were also clearly visible on diffuse reflectance spectra (DRS). Samples representing two modifications of halloysites, dehydrated (7 angstrom) and hydrated (10 angstrom) forms, respectively, were examined with the aim to select suitable candidates for to be used as carriers of porphyrine photoactive molecules. The samples were analysed by powder X-ray diffraction (pXRD), infrared spectroscopy (FT-IR), and high resolution transmission electron microscopy (HRTEM). Chemical composition was also determined. For the determination of cationic exchange capacity (CEC) the silver thiourea method (AgTU) was used. Silver cations concentrations in the solution before and after the interaction were determined by atomic absorption spectrometry (AAS). By the interaction of two pure hydrated halloysites with porphyrine it was found that porphyrine does not intercalate the interlayer space, but it is adsorbed on the outer surface of halloysite. This interaction changed the colour of clay sample from white to green. The changes were also clearly visible on diffuse reflectance spectra (DRS). (en)
Title	Mineralogy of halloysites and their interaction with porphyrine Mineralogy of halloysites and their interaction with porphyrine (en)
skos:prefLabel	Mineralogy of halloysites and their interaction with porphyrine Mineralogy of halloysites and their interaction with porphyrine (en)
skos:notation	RIV/00216208:11310/13:10209672!RIV14-MSM-11310___
http://linked.open...avai/predkladatel	Přírodovědecká fakulta
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Vašutová, Vlasta
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	88447
http://linked.open...ai/riv/idVysledku	RIV/00216208:11310/13:10209672
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	CEC; porphyrine; halloysite; mineralogy; Organoclays (en)
http://linked.open.../riv/klicoveSlovo	halloysite CEC Organoclays porphyrine mineralogy
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[222F1C139833]
http://linked.open...i/riv/nazevZdroje	Ceramics - Silikaty
http://linked.open...in/vavai/riv/obor	DB
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	57
http://linked.open...iv/tvurceVysledku	Bezdička, Petr Hradil, David Lang, Kamil Vašutová, Vlasta
http://linked.open...ain/vavai/riv/wos	000329004800011
issn	0862-5468
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	11310

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