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Defective TiO2 for CO2 photoreduction: Influence of alkaline agent and reduction temperature modulation
Abstract
This study investigates the synthesis and characterization of Black TiO2 photocatalyst (TiO2-x) through the sol-gel method combined with NaBH4 reduction at different temperatures (350 °C, 500 °C, and 650 °C). The photocatalytic performance for CO2 reduction was evaluated, revealing that TiO2-x_500°C sample exhibited the highest efficiency. This enhanced performance is mainly attributed to a higher concentration of oxygen vacancies and successful nitrogen doping resulting from ammonia water addition during synthesis. Comprehensive characterization techniques, including Raman spectroscopy, and XPS confirmed the presence of defects and their correlation with increased photocatalytic activity. These findings confirm the importance of defect engineering and doping in optimizing TiO2-based photocatalysts for CO2 photoreduction.
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Authors (9)
-
Rudolf Ricka
- VSB-Technical University of Ostrava
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Agnieszka Wanag
- VSB-Technical University of Ostrava
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Ewelina Kusiak-Nejman
- West Pomeranian University of Technology in Szczecin
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Miroslava Filip Edelmannová
- VSB-Technical University of Ostrava
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Martin Reli
- VSB-Technical University of Ostrava
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Grzegorz Słowik
- aculty of Chemistry, Maria Curie-Skłodowska University
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Antoni W. Morawski
- West Pomeranian University of Technology in Szczecin
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Kamila Kočí
- VSB-Technical University of Ostrava
Cite as
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
CATALYSIS TODAY
no. 448,
ISSN: 0920-5861 - Language:
- English
- Publication year:
- 2025
- Bibliographic description:
- Ricka R., Wanag A., Kusiak-Nejman E., Filip Edelmannová M., Reli M., Łapiński M., Słowik G., Morawski A. W., Kočí K.: Defective TiO2 for CO2 photoreduction: Influence of alkaline agent and reduction temperature modulation// CATALYSIS TODAY -Vol. 448, (2025), s.115162-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.cattod.2024.115162
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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