Hydrogen capture by porphyrins at the TiO2(110) surface.
Metal-free porphyrin molecules adsorb on the rutile TiO2(110) surface with their pyrrolic nitrogen atoms atop the O-bridge rows, whereas the iminic nitrogen atoms capture two additional hydrogen atoms. Hydrogenation occurs spontaneously at room temperature, irrespective of the distance of the polypyrrolic macrocycle from the surface, as varied by changing the porphyrin functionalization.
CNR-IOM, Laboratorio Nazionale TASC, I-34149 Trieste, Italy. floreano@iom.cnr.it.
Giacomo
G
Lovat
Daniel
D
Forrer
Mikel
M
Abadia
Marcos
M
Dominguez
Maurizio
M
Casarin
Celia
C
Rogero
Andrea
A
Vittadini
Luca
L
Floreano