Repozitorij Univerze v Novi Gorici

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Naslov:Photocatalytic Activity of Zirconium- and Manganese- Codoped Titania in Aqueous Media: The Role of the Metal Dopant and its Incorporation Site
Avtorji:ID Pliekhov, O. L., University of Nova Gorica (Avtor)
ID Arčon, Iztok, University of Nova Gorica, Jožef Stefan Institute (Avtor)
ID Novak Tušar, Nataša, National Institute of Chemistry, University of Nova Gorica (Avtor)
ID Lavrenčič Štangar, Urška, University of Nova Gorica (Avtor)
Datoteke: Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:The development of efficient TiO2-based photocatalysts for water treatment is mainly performed by doping with transition metals or by establishing junctions between different phases, metal–semiconductor or semiconductor–semiconductor. We present, for the first time, the synthesis of Zr- and Mn-modified TiO2 by a redesigned sol–gel technique that allows the formation of heterometallic bridges on the TiO2 surface. Cations of the doping metals are located in the pores of mesoporous anatase and attached to the crystalline TiO2 walls. The presence of the Zr enhances the photoactivity of the TiO2 catalyst. However, the introduction of Mn decreases the photocatalytic efficiency in a nonadditive manner. The inhibition effect was assigned to the side reaction between hydroxyl radicals and Mn ions. The fact that Mn effectively scavenges the hydroxyl radicals and, consequently, inhibits the whole oxidation process is direct proof that hydroxyl radicals are the main reactive species in the photocatalytic oxidative processes on TiO2 surfaces in aqueous media and the process of COH generation is the rate-determining step, which was confirmed using a method based on the decolorization of a commercial dye Bezaktiv Blau in a reaction with Fenton’s reagent as a source of hydroxyl radicals.
Ključne besede:doping, manganese, oxidation, X-ray absorption spectroscopy, zirconium
Verzija publikacije:Objavljena publikacija
Leto izida:2016
Št. strani:2109-2118
Številčenje:8
PID:20.500.12556/RUNG-2516 Novo okno
COBISS.SI-ID:5943322 Novo okno
DOI:10.1002/cctc.201600206 Novo okno
NUK URN:URN:SI:UNG:REP:LWZMUN63
Datum objave v RUNG:21.07.2016
Število ogledov:4291
Število prenosov:0
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Skupna ocena:(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.
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Gradivo je del revije

Naslov:ChemCatChem
Skrajšan naslov:ChemCatChem
Založnik:Wiley: 12 months
Leto izida:2016
ISSN:1867-3880

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