20.500.12556/DiRROS-17276 Photocatalytic CO2 reduction over mesoporous TiO2 photocatalysts 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. CO2 reduction TiO2 photocatalysis mesoporous material Sol-gel method CO2 redukcija TiO2 fotokataliza mezoporozni material Sol-gel metoda true false true Pergamon Angleški jezik Slovenski jezik © 2023 Elsevier Ltd. All rights reserved Neznano 2023-11-14 11:40:15 2023-11-14 11:40:16 2024-01-31 03:39:15 0000-00-00 00:00:00 2024 0 0 Nasl. z nasl. zaslona; Opis vira z dne 3. 11. 2023; str. 1-9 Vol. 169, [article no.] 107927 Jan. 2024 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-10-24 2025-10-24 54 1369-8001 10.1016/j.mssp.2023.107927 170802691 https://www.sciencedirect.com/science/article/pii/S1369800123006200?via%3Dihub 1 d13fc6c0-82d1-11ee-9ccb-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23459 RAZ_Reli_Martin_2024.pdf RAZ_Reli_Martin_2024.pdf 1 8B120525A9C8EFB89EED9B91DEAB1F4A 99da3785c5759ab1a821c852412d2dda6eb9a770308678d44c68319094c883d8 0cff972b-82e3-11ee-9ccb-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23468 RAZ_Reli_Martin_2024.docx RAZ_Reli_Martin_2024.docx 1 19B1B9A89FD9B640DB75022B1558AF65 110441cce50885281c8c6c05fe5c5ff84dd4dfe89400424cd22a9eb154e7034e 1f54a3c2-bf61-11ee-b0d4-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=24462 Zavod za gradbeništvo Slovenije 0 0 0