Abstract
This paper deals with the photocatalytic oxidation of benzyl amine by O2 on TiO2 under visible light irradiation, and it was found that the benzyl amine is selectively converted into N-benzylidenebenzylamine with high conversion (>80 %). The origin of visible light response is not due to the band-gap transition of TiO2, but to the excitation of the charge transfer surface complex constructed by the interaction of benzyl amine with the TiO2 surface, as characterized by spectroscopic analysis such as UV-Vis, FT-IR and DFT calculations. Moreover, investigations of the role of the surface OH groups on TiO2, the electron-transfer from the surface complex as well as kinetic studies provided insight into the reaction mechanisms.
Keywords: Apparent quantum yields, Benzyl amine, DFT calculation, N-benzylidenebenzylamine, Selective photocatalytic oxidation, Titanium dioxide, Visible light
Call for Papers in Thematic Issues
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
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