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Title: | Using Fiber Bragg Grating Sensors to Quantify Temperature Non‐Uniformities in Plasmonic Catalyst Beds under Illumination | Authors: | Xu, Man den Hartog, Tim Cheng , Lun Wolfs, Marciano Habets, Roberto Rohlfs, Jelle VAN DEN HAM, Jonathan Meulendijks, Nicole Sastre, Francesc BUSKENS, Pascal |
Issue Date: | 2022 | Publisher: | WILEY-V C H VERLAG GMBH | Source: | ChemPhotoChem, (Art N° e202100289) | Status: | Early view | Abstract: | Distinguishing between photothermal and non-thermal contributions is essential in plasmon catalysis. Use of a tailored optical temperature sensor based on fiber Bragg gratings enabled us to obtain an accurate temperature map of an illuminated plasmonic catalyst bed with high spatiotemporal resolution. Its importance for quantification of the photothermal and non-thermal contributions to plasmon catalysis is demonstrated using a Ru/Al2O3 catalyst. Upon illumination with LEDs, we measured temperature differences exceeding 50 degrees C in the top 0.5 mm of the catalyst bed. Furthermore, we discovered differences between the surface temperature and the temperature obtained via conventional thermocouple measurements underneath the catalyst bed exceeding 200 degrees C at 2.6 W cm(-2) light intensity. This demonstrates that accurate multi-point temperature measurements are a prerequisite for a correct interpretation of catalysis results of light-powered chemical reactions obtained with plasmonic catalysts. | Notes: | Xu, M; Buskens, P (corresponding author), Netherlands Org Appl Sci Res TNO, High Tech Campus 25, NL-5656 AE Eindhoven, Netherlands.; Xu, M (corresponding author), Delft Univ Technol, Opt Res Grp, Lorentzweg 1,Bldg 22, NL-2628 CJ Delft, Netherlands.; Buskens, P (corresponding author), Inst Mat Res Design & Synth Inorgan Mat DESINe, Agoralaan Bldg D, B-3590 Diepenbeek, Belgium. man.xu@tno.nl; pascal.buskens@tno.nl |
Keywords: | Bragg gratings;fibre optic sensing;hot electron injection;photothermal effects;plasmonic catalysis | Document URI: | http://hdl.handle.net/1942/37085 | ISSN: | 2367-0932 | e-ISSN: | 2367-0932 | DOI: | 10.1002/cptc.202100289 | ISI #: | WOS:000766387100001 | Rights: | 2022 The Authors. ChemPhotoChem published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and d reproduction in any medium, provided the original work is properly cited. | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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Using Fiber Bragg Grating Sensors to Quantify Temperature Non‐Uniformities in Plasmonic Catalyst Beds under Illumination.pdf | Published version | 1.62 MB | Adobe PDF | View/Open |
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