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

Abstract

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.

Keywords

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

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: IJS - Jožef Stefan Institute
Publisher: Elsevier Science
UDC: 544.5/.6
COBISS: 144950275 Link will open in a new window
ISSN: 1873-4669
Views: 165
Downloads: 74
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Other data

Secondary language: Slovenian
Secondary keywords: titanijev dioksid;fotokatalizator;bisfenol A;
Source comment: Nasl. z nasl. zaslona; Soavtorji: Gregor Žerjav, Matjaž Finšgar, Janez Zavašnik, Albin Pintar; Opis vira z dne 13. 3. 2023;
Pages: str. 1-16
Issue: ǂVol. ǂ947, [article no.] 169585
Chronology: 25 Jun. 2023
DOI: 10.1016/j.jallcom.2023.169585
ID: 18296072