Photocatalytic CO2 reduction over mesoporous TiO2 photocatalysts

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F24%3A10253540" target="_blank" >RIV/61989100:27710/24:10253540 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27360/24:10253540
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1369800123006200" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1369800123006200</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.mssp.2023.107927" target="_blank" >10.1016/j.mssp.2023.107927</a>

Result language
angličtina
Original language name
Photocatalytic CO2 reduction over mesoporous TiO2 photocatalysts
Original language description
In 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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry

Project
<a href="/en/project/GF21-24268K" target="_blank" >GF21-24268K: CO2 transformation to valuable chemicals by catalytic and photocatalytic ways over highly active materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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