About: Competitive adsorption and photodegradation of salicylate and oxalate on goethite

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About: Competitive adsorption and photodegradation of salicylate and oxalate on goethite Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This work deals with the competitive adsorption and photodegradation of salicylate and oxalate on alpha-FeOOH (goethite) which is a predominant crystalline modification of iron oxide present in sea sediment. pH is a crucial parameter in goethite photodissolution; therefore, by means of a pH stat titration, pH was kept constant during all experiments. For either acidic (pH 3) or neutral (pH 6) pH values oxalate is preferentially adsorbed on the goethite surface. Thus, in the presence of oxalate, adsorption of salicylate is suppressed and for oxalate concentration 2 mM is even negligible. Without oxalate the photodegradation of salicylate on goethite is negligible due to the short circuiting effect of photo-generated h(+) and e(-). When oxalate is present in the system photodissolution of goethite takes place, which results in the formation of OH radicals and photodegradation of salicylate. This work deals with the competitive adsorption and photodegradation of salicylate and oxalate on alpha-FeOOH (goethite) which is a predominant crystalline modification of iron oxide present in sea sediment. pH is a crucial parameter in goethite photodissolution; therefore, by means of a pH stat titration, pH was kept constant during all experiments. For either acidic (pH 3) or neutral (pH 6) pH values oxalate is preferentially adsorbed on the goethite surface. Thus, in the presence of oxalate, adsorption of salicylate is suppressed and for oxalate concentration 2 mM is even negligible. Without oxalate the photodegradation of salicylate on goethite is negligible due to the short circuiting effect of photo-generated h(+) and e(-). When oxalate is present in the system photodissolution of goethite takes place, which results in the formation of OH radicals and photodegradation of salicylate. (en)
Title	Competitive adsorption and photodegradation of salicylate and oxalate on goethite Competitive adsorption and photodegradation of salicylate and oxalate on goethite (en)
skos:prefLabel	Competitive adsorption and photodegradation of salicylate and oxalate on goethite Competitive adsorption and photodegradation of salicylate and oxalate on goethite (en)
skos:notation	RIV/61388955:_____/11:00359745!RIV12-AV0-61388955
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1M0577), Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Jirkovský, Jaromír
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	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	191346
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/11:00359745
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	goethite; oxalate; salicylate (en)
http://linked.open.../riv/klicoveSlovo	goethite oxalate salicylate
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[51EFBB495761]
http://linked.open...i/riv/nazevZdroje	Catalysis Today
http://linked.open...in/vavai/riv/obor	CG
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Research centre for nanostructures engineering
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	161
http://linked.open...iv/tvurceVysledku	Bajt, O. Jirkovský, Jaromír Krýsa, J. Mailhot, G.
http://linked.open...ain/vavai/riv/wos	000287730900037
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
issn	0920-5861
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.cattod.2010.11.083

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