| Title: | Photocatalytic CO2 reduction over mesoporous TiO2 photocatalysts |
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| Authors: | ID Reli, Martin (Author)
ID Nadrah, Peter (Author)
ID Filip Edelmannová, Miroslava (Author)
ID Ricka, Rudolf (Author)
ID Sever Škapin, Andrijana (Author)
ID Lavrenčič Štangar, Urška (Author)
ID Kočí, Kamila (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S1369800123006200?via%3Dihub
 PDF - Presentation file. (2,42 MB, This file will be accessible after 24.10.2025)
MD5: 8B120525A9C8EFB89EED9B91DEAB1F4A
 DOCX - Supplement. (354,90 KB, This file will be accessible after 24.10.2025)
MD5: 19B1B9A89FD9B640DB75022B1558AF65
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
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| Abstract: | 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. |
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| Keywords: | CO2 reduction, TiO2, photocatalysis, mesoporous material, Sol-gel method |
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| Publication status: | Published |
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| Publication version: | Author Accepted Manuscript |
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| Publication date: | 24.10.2023 |
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| Publisher: | Pergamon |
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| Year of publishing: | 2024 |
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| Number of pages: | str. 1-9 |
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| Numbering: | Vol. 169, [article no.] 107927 |
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| PID: | 20.500.12556/DiRROS-17276  |
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| UDC: | 54 |
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| ISSN on article: | 1369-8001 |
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| DOI: | 10.1016/j.mssp.2023.107927 |
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| COBISS.SI-ID: | 170802691 |
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| Copyright: | © 2023 Elsevier Ltd. All rights reserved |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 3. 11. 2023;
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| Publication date in DiRROS: | 14.11.2023 |
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| Views: | 781 |
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| Downloads: | 112 |
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