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Hemispherical and Columnar TiO 2 Arrays Grown by Reactive Pulsed Laser Deposition for Photocatalytic Applications
Author(s) -
Sauthier G.,
Figueras A.,
György E.
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2012.05270.x
Subject(s) - photocatalysis , materials science , pulsed laser deposition , monolayer , deposition (geology) , chemical engineering , methylene blue , polystyrene , catalysis , nanotechnology , semiconductor , aqueous solution , degradation (telecommunications) , laser , thin film , optoelectronics , chemistry , optics , composite material , organic chemistry , polymer , paleontology , telecommunications , physics , sediment , computer science , engineering , biology
Hemispherical and columnar TiO 2 array were produced by reactive pulsed laser deposition ( PLD ) using self‐assembled polystyrene ( PS ) monolayers as templates. The integration of PS microspheres self‐assembly processes and PLD permits the creation of periodic arrays in hexagonal arrangement. The micro/nano array architecture demonstrates outstanding catalytic performance in the degradation of methylene blue dye in aqueous solution. The obtained results suggest that besides other structural characteristics the large specific surface area plays an essential role in the improvement of photoactivity of oxide semiconductor catalyst.