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Naslov:Nickel-decorated ZnO nanoparticles for effective solar reduction of hexavalent chromium and removal of selected pharmaceuticals
Avtorji:ID Ravbar, Miha (Avtor)
ID Maver, Ksenija (Avtor)
ID Knaflič, Tilen (Avtor)
ID Arčon, Iztok (Avtor)
ID Novak Tušar, Nataša (Avtor)
ID Lavrenčič Štangar, Urška (Avtor)
ID Šuligoj, Andraž (Avtor)
Datoteke:.pdf Ni_ZnO_catalyst_reprint_2024.pdf (4,49 MB)
MD5: 768226C08ED53CA450AF12A51B00FC5C
 
.docx Metal-decorated-ZnO_supplementary_reprint_2024.docx (1,07 MB)
MD5: DB8AC782BCDAA524E0181A01CF31C618
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:The efficient visible light driven photocatalytic reduction of hexavalent chromium, Cr(VI) was demonstrated using ZnO nanoparticles (NPs) decorated with oxo-clusters of transition metals. The ZnO NPs were synthesized by a facile one-pot solvothermal synthesis followed by a fast microwave-assisted (MW) grafting of transition metals on the surface of NPs. Nickel was found to be the most active transition metal for photocatalytic activity as demonstrated by reduction of Cr(VI) to Cr(III). The optimally grafted samples contained 0.5 wt% Ni and increased photocatalytic activity by almost one-fold. The oxo-clusters did not enter the lattice of ZnO but rather resided on the surface and their efficient bonding to the ZnO surface was proved by Raman, TEM and X-Ray absorption techniques. Influence of MW power was studied and shown that excessive power load leads to formation of elongated structures of ZnO which decreases the photocatalytic activity. It was demonstrated by measuring fluorescent radical products that electrons, efficiently transferred via oxygen, were the main active species in combination with the unchanged oxidation power of holes and • OH in the grafted samples. The applicability of the materials was tested in immobilized plug flow photoreactor system degrading five pharmaceuticals simultaneously where their long-term use was shown.
Ključne besede:Zinc oxide, Pharmaceuticals, Grafting, Cr(VI), Zn XANES, Zn EXAFS
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.01.2025
Leto izida:2025
Št. strani:13 str.
Številčenje:Vol. 681, Art. 161463
ISSN:0169-4332
COBISS.SI-ID:211967747 Novo okno
UDK:539
ISSN pri članku:0169-4332
DOI:10.1016/j.apsusc.2024.161463 Novo okno
NUK URN:URN:SI:UNG:REP:FNZXWQK5
Datum objave v RUNG:24.10.2024
Število ogledov:128
Število prenosov:2
Metapodatki:XML DC-XML DC-RDF
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Gradivo je del revije

Naslov:Applied Surface Science
Skrajšan naslov:Appl. surf. sci.
Založnik:North-Holland
ISSN:0169-4332
COBISS.SI-ID:3283215 Novo okno

Gradivo je financirano iz projekta

Financer:ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Program financ.:Raziskovalni program
Številka projekta:P1-0112
Naslov:Raziskave atomov, molekul in struktur s fotoni in delci

Licence

Licenca:CC BY-NC 4.0, Creative Commons Priznanje avtorstva-Nekomercialno 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc/4.0/deed.sl
Opis:Licenca Creative Commons, ki prepoveduje komercialno uporabo, vendar uporabniki ne rabijo upravljati materialnih avtorskih pravic na izpeljanih delih z enako licenco.
Začetek licenciranja:09.10.2024

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:nanodelci, nikel, krom


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