Influence of the calcination duration of g-C[sub]3N[sub]4/TiO[sub]2 “veggie-toast-like” photocatalyst on the visible-light triggered photocatalytic oxidation of bisphenol A

Matevž Roškarič (Avtor), Gregor Žerjav (Avtor), Matjaž Finšgar (Avtor), Janez Zavašnik (Avtor), Albin Pintar (Avtor)

Povzetek

Two commercially available ▫$TiO_2$▫ (hexagonal-like and spherical-like particles) were used to investigate the effect of ▫$g-C_3N_4$▫ “melting” on the photocatalytic properties of ▫$g-C_3N_4/TiO_2$▫ composites. Improvement in the contact between the components was observed when they were thermally treated at 350 °C for an extended period of time (between 2 and 72 h) due to the partial melting and phase fusion of ▫$g-C_3N_4$▫. Consequently, the enhanced contact between the phases allows easier injection of photogenerated electrons from the conduction band of ▫$g-C_3N_4$▫ into ▫$TiO_2$▫, improving charge carrier separation. The prepared composites were tested for bisphenol A degradation under visible-light illumination, which showed that the components that had been calcined for 24 h performed better due to the improved charge carrier separation. Superoxide anionic radicals and photogenerated holes were identified as active species in the photooxidation experiments conducted under visible-light illumination.

Ključne besede

titanium dioxide;photocatalyst;calcination time;photocatalysis under visible-light illumination;water remediation;bisphenol A;

Podatki

Jezik:	Angleški jezik
Leto izida:	2023
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	IJS - Institut Jožef Stefan
Založnik:	Elsevier Science
UDK:	544.5/.6
COBISS:	144950275
ISSN:	1873-4669
Št. ogledov:	165
Št. prenosov:	74
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	titanijev dioksid;fotokatalizator;bisfenol A;
Komentar vira:	Nasl. z nasl. zaslona; Soavtorji: Gregor Žerjav, Matjaž Finšgar, Janez Zavašnik, Albin Pintar; Opis vira z dne 13. 3. 2023;
Strani:	str. 1-16
Zvezek:	ǂVol. ǂ947, [article no.] 169585
Čas izdaje:	25 Jun. 2023
DOI:	10.1016/j.jallcom.2023.169585
ID:	18296072