Martin Reli (Avtor), Peter Nadrah (Avtor), Miroslava Filip Edelmannová (Avtor), Rudolf Ricka (Avtor), Andrijana Sever Škapin (Avtor), Urška Lavrenčič Štangar (Avtor), Kamila Kočí (Avtor)

Povzetek

n this study, we investigated different synthesis methods (template-free and template-based) using copolymers of poly(ethylene oxide) and poly(propylene oxide) to enhance the CO2 reduction activity of mesoporous TiO2. Our main goal was to identify key factors affecting photocatalyst efficiency and selectivity. We compared the newly synthesized TiO2 photocatalysts with the commercial photocatalyst P25. Among the materials studied, TiO2-P123 in its pure anatase form demonstrated the highest photoreduction efficiency and CO2 selectivity. In contrast, TiO2-EG, TiO2-F127, and P25, which contained both rutile and anatase phases, exhibited decreased photoactivity due to the formation of a type II heterojunction between the phases and higher oxygen adsorption on rutile's surface. Additionally, we observed that the choice of chemicals for photocatalyst preparation significantly influenced the specific surface area. TiO2-P123, the most active photocatalyst, had the highest specific surface area, providing more reactive sites for improved light absorption efficiency and prolonged electron-hole pair lifetimes, resulting in enhanced photocatalytic activity. We also calculated apparent quantum yields to support our findings.

Ključne besede

CO2 reduction;TiO2;photocatalysis;mesoporous material;Sol-gel method;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: ZAG - Zavod za gradbeništvo Slovenije
Založnik: Pergamon
UDK: 54
COBISS: 170802691 Povezava se bo odprla v novem oknu
ISSN: 1369-8001
Št. ogledov: 226
Št. prenosov: 20
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: CO2 redukcija;TiO2;fotokataliza;mezoporozni material;Sol-gel metoda;
Konec prepovedi (OpenAIRE): 2025-10-24
Komentar vira: Nasl. z nasl. zaslona; Opis vira z dne 3. 11. 2023;
Strani: str. 1-9
Zvezek: ǂVol. ǂ169, [article no.] 107927
Čas izdaje: Jan. 2024
DOI: 10.1016/j.mssp.2023.107927
ID: 20978977