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Enhanced Visible‐Light Photocatalytic Disinfection of Bacterial Spores by Palladium‐Modified Nitrogen‐Doped Titanium Oxide
Author(s) -
Wu Pinggui,
Xie Rongcai,
Shang Jian Ku
Publication year - 2008
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.1551-2916.2008.02573.x
Subject(s) - photocatalysis , materials science , nanofiber , palladium , titanium oxide , titanium dioxide , endospore , titanium , visible spectrum , fiber , chemical engineering , nuclear chemistry , spore , chemistry , nanotechnology , catalysis , microbiology and biotechnology , composite material , organic chemistry , metallurgy , optoelectronics , engineering , biology
Palladium‐modified nitrogen‐doped titanium oxide (TiON/PdO) nanofibers were synthesized by a sol–gel process on activated carbon‐coated glass fiber (ACGF) template. The TiON/PdO fiber was tested for visible‐light‐activated photocatalysis using Bacillus subtilis endospore as a target. Our work shows that TiON/PdO nanofibers display an effective antimicrobial effect on Bacillus spores. The palladium modification provides a strong enhancement over TiON in the photocatalytic disinfection. Microscopic characterization demonstrated that visible‐light photocatalysis on TiON/PdO fiber caused drastic damage on the spore coat and internal structure.