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Influence of TiO 2 ‐Layer Thickness of Spray‐Coated Glass Beads on Their Photocatalytic Performance
Author(s) -
Holze Susann,
Krüger Benjamin,
Hoffmann Torsten,
Bück Andreas,
Schwidder Michael
Publication year - 2017
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201600432
Subject(s) - photocatalysis , materials science , fluidized bed , chemical engineering , fluidization , methylene blue , coating , layer (electronics) , methyl orange , catalysis , composite material , waste management , chemistry , organic chemistry , engineering
TiO 2 is a suitable catalyst for potential photocatalytic processes, e.g., in wastewater treatment. For a technical realization of such processes, the application of immobilized TiO 2 in a continuous process would be desirable. However, since UV radiation has a limited penetration depth into a packed bed of pure TiO 2 , supporting it on UV‐transparent glass beads offers the possibility to implement continuous photocatalytic processes in a fixed‐bed reactor. Considering this fact, glass beads were coated with TiO 2 powder in a fluidized‐bed reactor. The coated glass beads with varying TiO 2 layer thickness were tested in the photocatalytic degradation of methylene blue, and the influence of an addition of methyl cellulose during the coating process on the photocatalytic performance was investigated.