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Light-harvesting properties of photocatalyst supports—no photon left behind

Tountas, Athanasios A.; Dreher, Anselm 1; Zhou, Wenjie; Mohan, Abhinav; Kherani, Nazir P.; Ozin, Geoffrey A. ; Sain, Mohini M.
1 Institut für Mikroverfahrenstechnik (IMVT), Karlsruher Institut für Technologie (KIT)

Abstract:

In this work, we set out to elucidate the light-harvesting properties of various random and ordered photocatalyst supports (PSs) with different macropore sizes. To accomplish this, we propose two studies of increasing relevance, enabled by computed tomography (CT) reconstructions and ray-tracing COMSOL Multiphysics simulations: (a) a 360-degree light release study approximating a PS situated within a compound parabolic concentrator (CPC) or cylindrical LED reactor with open ends; and (b) the same system as before but with closed ends. The ordered geometry is of interest, as it can be 3D printed at scale with a tailored morphology and porosity, and it can potentially be refined using machine learning models to optimize its light-harvesting properties. As will be shown, the local volumetric light absorption (LVLA) data suggests that an ordered PS with a more open pore interior and a smaller pore exterior would begin to approach the more isophotonic light-harvesting properties of random PSs.


Verlagsausgabe §
DOI: 10.5445/IR/1000175861
Veröffentlicht am 04.11.2024
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mikroverfahrenstechnik (IMVT)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 08.10.2024
Sprache Englisch
Identifikator ISSN: 2057-3960
KITopen-ID: 1000175861
HGF-Programm 38.03.02 (POF IV, LK 01) Power-based Fuels and Chemicals
Erschienen in npj Computational Materials
Verlag Nature Research
Band 10
Heft 1
Seiten Art.-Nr.: 239
Nachgewiesen in Web of Science
Dimensions
Scopus
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