Hydrogen production by photocatalytic membranes fabricated by supersonic cluster beam deposition on glass fiber filters |
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| Authors: | Flavio Della Foglia Gian Luca Chiarello Maria Vittoria Dozzi Paolo Piseri Luca Giacomo Bettini Simone Vinati Caterina Ducati Paolo Milani Elena Selli |
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| Affiliation: | 1. Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, I-20133 Milano, Italy;2. CIMAINA, Università degli Studi di Milano, via Celoria 16, I-20133 Milano, Italy;3. Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, I-20133 Milano, Italy;4. Tethis S.p.A., Via Russoli 3, I-20143 Milano, Italy;5. Department of Material Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, United Kingdom |
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| Abstract: | Photoactive membranes coated with TiO2 and Pt/TiO2 nanostructured thin films were produced by one-step deposition of gas phase nanoparticles on glass fiber filters. Pt/TiO2 nanoparticles (0–1.5 wt.% Pt content) were produced by flame spray pyrolysis, starting from liquid solutions of the Ti and Pt precursors, and then expanded in a supersonic beam to be deposited on the filters. The nanostructured coatings were composed of crystalline nanoparticles (mainly anatase phase), without any need of post-deposition annealing. The so obtained photocatalytic membranes were tested in hydrogen production by photo-steam reforming of ethanol in an expressly set-up diffusive photoreactor. The reaction rate was found to increase with increasing the Pt content in the photoactive material, up to 1.5 wt.% Pt. The use of these membranes allowed a significant increase of the hydrogen production rate compared to that obtained with the same photoactive Pt/TiO2 films deposited on a quartz substrate. |
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| Keywords: | Pt/TiO2 thin films Flame spray pyrolysis Supersonic cluster beam deposition Photosteam reforming of ethanol |
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