Title
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Recent advances in metal-doped defective TiO₂ for photocatalytic CO₂ conversion
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Author
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Abstract
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Introducing defects in TiO2-based photocatalytic materials is a promising strategy for improving light-driven CO2 reduction. However, defects such as oxygen vacancies are generally unstable. As a solution and to further enhance the photocatalytic activity, metal doping has been applied. This mini review aims to summarize recent progress in this particular field. Herein, we have classified metal-doped architectures into three different categories: single metal doping, alloy- and co-doping, and doping of morphologically nanoengineered TiO2−x substrates. The direct relationship between specific metals and product selectivity remains complex, as selectivity can vary significantly among seemingly similar materials. However, numerous methods do show promise in fine-tuning selectivity towards either CO or CH4. In terms of photocatalytic turnover, remarkable yields have been reported in isolated reports, but insufficient experimental data and divergent reaction conditions hamper a true comparison. This puts an emphasis on the need for standardized activity testing. |
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Language
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English
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Source (journal)
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Current Opinion in Chemical Engineering
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Publication
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2024
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ISSN
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2211-3398
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DOI
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10.1016/J.COCHE.2024.101013
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Volume/pages
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44
(2024)
, p. 1-11
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Article Reference
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101013
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ISI
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001221356800001
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Full text (Publisher's DOI)
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Full text (open access)
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The author-created version that incorporates referee comments and is the accepted for publication version Available from 16.09.2024
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Full text (publisher's version - intranet only)
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