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Fabrication of TiO 2 photocatalytic electrode and contamination control with atmospheric pressure O 2 plasma jet
Author(s) -
Song ChanGeun,
Kim Tae Hwan,
Yoon JongWon,
Lee Ho-Jun,
Won Jonghwan,
Lee Seung Whan
Publication year - 2019
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13325
Subject(s) - materials science , photocatalysis , anatase , polyvinylpyrrolidone , electrode , chemical engineering , carbonization , cellulose acetate , electrospinning , atmospheric pressure , photodegradation , polymer , composite material , cellulose , scanning electron microscope , polymer chemistry , catalysis , organic chemistry , chemistry , engineering , oceanography , geology
In this study, we demonstrate the fabrication of TiO 2 photocatalytic electrode by sol‐gel and electrospinning technique. The anatase TiO 2 nanofiber is successfully formed after thermal annealing at 260°C. As‐prepared TiO 2 photocatalytic electrode contains surface contamination, which includes a polymer binder such as ethyl cellulose, carbon by carbonization of polyvinylpyrrolidone, and residue polyvinylpyrrolidone. To efficiently remove the surface contaminants from the TiO 2 photocatalytic electrode, we employ an atmospheric‐pressure O 2 plasma jet and the exposure time is controlled by the scanning rate. As the results, photodegradation efficiency of methylene blue is significantly enhanced with a scanning rate in the range of 100‐500 μm/s and was saturated with a scanning rate in the range of 10‐100 μm/s.
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