1831. Smernice za zagotavljanje gozdnega reprodukcijskega materiala : predlog pripravljen v okviru projekta LIFEGENMONKristina Sever, Boris Rantaša, Marijana Vidrih Minić, Natalija Dovč, Janez Kermavnar, Marjana Westergren, Gregor Božič, Matjaž Guček, Andrej Breznikar, Aleš Poljanec, Hojka Kraigher, 2021, treatise, preliminary study, study Keywords: gozdni reprodukcijski material, gozdni semenski objekti, provenienčna območja, vrste, genetska pestrost
Published in DiRROS: 14.11.2023; Views: 553; Downloads: 168
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1832. PrefaceVasja Leban, Anže Japelj, Lidija Zadnik Stirn, Špela Pezdevšek Malovrh, 2023, preface, editorial, afterword Keywords: forest management, economics, conferences, preface
Published in DiRROS: 14.11.2023; Views: 615; Downloads: 186
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1839. Photocatalytic CO2 reduction over mesoporous TiO2 photocatalystsMartin Reli, Peter Nadrah, Miroslava Filip Edelmannová, Rudolf Ricka, Andrijana Sever Škapin, Urška Lavrenčič Štangar, Kamila Kočí, 2024, original scientific article 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.
Keywords: CO2 reduction, TiO2, photocatalysis, mesoporous material, Sol-gel method
Published in DiRROS: 14.11.2023; Views: 487; Downloads: 53
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