Title:
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3D printing of structured nanotitania catalysts: a novel binder-free and low-temperature chemical sintering method
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Author:
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Elkoro Ugarteburu, Ander; Casanova Hormaechea, Ignasi
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental; Universitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia |
Abstract:
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Final publication is available from Mary Ann Liebert, Inc., publishers http://dx.doi.org/10.1089/3dp.2017.0164 |
Abstract:
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Pure titania nanoparticles were used successfully to manufacture 3D prints of monoliths using a high-precision paste extruder and a novel binder-free, low-temperature chemical sintering method. Nanoparticles become bonded to each other through formation of oxygen bridges by acid-induced dehydration of surface hydroxyl groups. Two different monolith designs were printed by additive superposition of paste filaments extruded through a 580-lm-diameter tip. Prints are self-supporting and chemically stable after a thermal post-treatment at 150ºC. Such thermal processing does not affect the crystal structure of the phases that constitute the nanoparticles, and the original high anatase content is maintained. The 3D-printed monolith structures show a high photocatalytic activity, as evidenced by the rates of gas-phase acetaldehyde removal. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria dels materials -Titanium dioxide -3D printing -direct ink writing -TiO2 -nanoparticles -photocatalysis -chemical sintering -Diòxid de titani |
Rights:
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Document type:
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Article - Submitted version Article |
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