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Enhanced Visible‐Light Photocatalytic Degradation of Humic Acid by Palladium‐Modified Nitrogen‐Doped Titanium Oxide
Author(s) -
Li Qi,
Xie Rongcai,
Mintz Eric A.,
Shang Jian Ku
Publication year - 2007
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.1551-2916.2007.02036.x
Subject(s) - palladium , photocatalysis , visible spectrum , titanium , titanium oxide , materials science , oxide , nitrogen , inorganic chemistry , titanium dioxide , doping , photochemistry , degradation (telecommunications) , chemical engineering , chemistry , catalysis , organic chemistry , metallurgy , telecommunications , optoelectronics , computer science , engineering
Palladium‐modified nitrogen‐doped titanium oxide (TiON/PdO) nanoparticles were synthesized by a sol–gel process, for visible‐light‐induced photocatalysis using humic acid (HA) as a target. Our work shows that palladium modification has strong effects on the optical and photocatalytic properties of nitrogen‐doped titanium oxide (TiON) photocatalysts. TiON/PdO nanoparticles demonstrated an enhanced photocatalytic activity over TiON within a narrow range of palladium concentration. Beyond this range, the adverse effect of palladium modification was observed in the visible‐light‐induced degradation of HA. The effects of palladium modification are discussed in terms of its role in controlling electron–hole recombination.