TY - GEN

T1 - Material Extrusion Additive Manufacturing for Photocatalytic Applications

AU - Gonzalez-Gutierrez, Joamin

AU - Jiang, Wentao

AU - Lichal, Christof

AU - Schuschnigg, Stephan

AU - Huang, Lei

AU - Holzer, Clemens

N1 - Conference code: 27

PY - 2018/4/19

Y1 - 2018/4/19

N2 - In Additive Manufacturing (AM), Material Extrusion (ME), also known as, Fused Filament Fabrication (FFF) and Fused Deposition Modeling (FDMTM), is one of the most popular additive manufacturing techniques for the production of polymeric components. ME allows the production of porous structures of medium to large size with economical, but reliable equipment and materials. One possible application of such parts could be as support structures for monolithic photo-catalysts. Photo-catalysts are an attractive alternative for air pollution control. Toxic volatile organic compounds like formaldehyde could be oxidized to non-toxic inorganic compounds (CO2 and H2O) with the help of monolithic photo-catalysts. Two main limitations of current monolithic photo-catalysts are the low efficiency for photon transfer and the limited contact between activated catalysts and reagents (mass transfer limitation). These two limitations can be improved by modifying the geometry of the support structure for photo-catalysts and by building these structures via AM. In the project FlexiFactory3Dp, the optimal geometry of support structures for photocatalytic applications is being investigated. Two porous structures have been designed and built using ME with two commercially available polymers: PMMA and ABS. One type of the structures has curved pores in order to ensure the maximum incidence of light on the surface of the pore and thin walls to avoid the loss of light by reflection. The other type of structure has straight pores of similar size that can be manufactured with conventional methods and it is used as a reference. The four support structures will be coated with titanium dioxide particles that are photocatalytic in nature and the catalytic efficiency will be evaluated.

AB - In Additive Manufacturing (AM), Material Extrusion (ME), also known as, Fused Filament Fabrication (FFF) and Fused Deposition Modeling (FDMTM), is one of the most popular additive manufacturing techniques for the production of polymeric components. ME allows the production of porous structures of medium to large size with economical, but reliable equipment and materials. One possible application of such parts could be as support structures for monolithic photo-catalysts. Photo-catalysts are an attractive alternative for air pollution control. Toxic volatile organic compounds like formaldehyde could be oxidized to non-toxic inorganic compounds (CO2 and H2O) with the help of monolithic photo-catalysts. Two main limitations of current monolithic photo-catalysts are the low efficiency for photon transfer and the limited contact between activated catalysts and reagents (mass transfer limitation). These two limitations can be improved by modifying the geometry of the support structure for photo-catalysts and by building these structures via AM. In the project FlexiFactory3Dp, the optimal geometry of support structures for photocatalytic applications is being investigated. Two porous structures have been designed and built using ME with two commercially available polymers: PMMA and ABS. One type of the structures has curved pores in order to ensure the maximum incidence of light on the surface of the pore and thin walls to avoid the loss of light by reflection. The other type of structure has straight pores of similar size that can be manufactured with conventional methods and it is used as a reference. The four support structures will be coated with titanium dioxide particles that are photocatalytic in nature and the catalytic efficiency will be evaluated.

KW - Additive Manufacturing

KW - photocatalysis

KW - Fused Filament Fabrication

KW - titanium dioxide

KW - acrylonitrile-butadiene-styrene

KW - PMMA

M3 - Conference contribution

SN - 978-3-9503248-8-4

VL - 27

SP - 259

EP - 260

BT - 27. Leobener Kunststoff-Kolloquium: Print & Coat- Polymere in Druck- und Beschichtungstechnologien

A2 - Kern, Wolfgang

CY - Leoben

T2 - 27. Leobener Kunststoff-Kolloquium

Y2 - 19 April 2018 through 20 April 2018

ER -