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<div class="csl-entry">Phongamwong, T., Barrabés, N., Donphai, W., Witoon, T., Rupprechter, G., & Chareonpanich, M. (2023). Chlorophyll-modified Au₂₅(SR)₁₈-functionalized TiO₂ for photocatalytic degradation of rhodamine B. <i>Applied Catalysis B: Environmental</i>, <i>325</i>, Article 122336. https://doi.org/10.1016/j.apcatb.2022.122336</div>
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dc.identifier.issn
0926-3373
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/146124
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dc.description.abstract
Solar-driven photocatalysis is a promising route toward cleaner production using sunlight as a sustainable energy source. Nanocrystalline TiO2, in the form of mixed anatase/rutile phases (P25), is often employed, but must be modified for higher activity in visible light. To improve the light harvesting properties, nano-bio hybrid photocatalysts were prepared by functionalizing P25 with Au25 clusters, Au nanoparticles, and/or chlorophyll. The most effective photocatalytic degradation of rhodamine B (RhB) was observed over P25 catalysts functionalized with both Au25 and chlorophyll. HR-TEM, UV–vis, XPS and XANES/EXAFS were applied to examine the factors influencing photocatalytic activity. A direct contact between Au25, chlorophyll, and P25, strongly improved the electron transfer from chlorophyll to P25, while still maintaining the reusability of catalysts. For chlorophyll-modified Au25(SR)18-functionalized P25 catalyst, the degradation rate of RhB was enhanced ∼16 times compared to that of P25.
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dc.language.iso
en
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dc.publisher
ELSEVIER
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dc.relation.ispartof
Applied Catalysis B: Environmental
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dc.subject
Au clusters 25
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dc.subject
Chlorophyll
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dc.subject
Photocatalysis
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dc.subject
RhB degradation
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dc.subject
Visible light
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dc.title
Chlorophyll-modified Au₂₅(SR)₁₈-functionalized TiO₂ for photocatalytic degradation of rhodamine B