Marin Kovačić (Avtor), Klara Perović (Avtor), Josipa Papac (Avtor), Antonija Tomić (Avtor), Lev Matoh (Avtor), Boštjan Žener (Avtor), Tomislav Brodar (Avtor), Ivana Capan (Avtor), Angela Šurca Vuk (Avtor), Hrvoje Kušić (Avtor), Urška Lavrenčič Štangar (Avtor), Ana Lončarić Božić (Avtor)

Povzetek

Sulfur-doped TiO$_2$ (S-TiO$_2$) composites with reduced graphene oxide (rGO), wt. % of rGO equal to 0.5%, 2.75%, and 5.0%, were prepared by a one-pot solvothermal procedure. The aim was to improve photocatalytic performance in comparison to TiO$_2$ under simulated solar irradiation for the treatment of diclofenac (DCF) in aqueous medium. The obtained composites were characterized for physical-chemical properties using thermogravimetric analysis (TGA), X-ray diffractograms (XRD), Raman, scanning electron microscopy (SEM)/energy dispersive X-ray (EDX), Brauner Emmett Teller (BET), and photoluminescence (PL) analyses, indicating successful sulfur doping and inclusion of rGO. Sulfur doping and rGO have successfully led to a decrease in photogenerated charge recombination. However, both antagonistic and synergistic effects toward DCF treatment were observed, with the latter being brought forward by higher wt.% rGO. The composite with 5.0 wt.% rGO has shown the highest DCF conversion at pH 4 compared to that obtained by pristine TiO$_2$, despite lower DCF adsorption during the initial dark period. The expected positive effects of both sulfur doping and rGO on charge recombination were found to be limited because of the subpar interphase contact with the composite and incomplete reduction of the GO precursor. Consequent unfavorable interactions between rGO and DCF negatively influenced the activity of the studied S-TiO$_2$/rGO photocatalyst under simulated solar irradiation.

Ključne besede

fotokataliza;titanov dioksid dopiran z žveplom;kompoziti;reduciran grafen oksid;diklofenak;photocatalysis;sulfur doped titanium dioxide;composite;reduced graphene oxide;diclofenac;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FKKT - Fakulteta za kemijo in kemijsko tehnologijo
UDK: 620:549.514.6:544.526.5
COBISS: 1538563267 Povezava se bo odprla v novem oknu
ISSN: 1996-1944
Št. ogledov: 201
Št. prenosov: 62
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: fotokataliza;titanov dioksid dopiran z žveplom;kompoziti;reduciran grafen oksid;diklofenak;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 1-13
Letnik: ǂVol. ǂ13
Zvezek: ǂiss. ǂ7
Čas izdaje: Apr. 2020
DOI: 10.3390/ma13071621
ID: 14010167