Semiconductor behavior of a metal-organic framework (MOF).
Upon light excitation MOF-5 behaves as a semiconductor and undergoes charge separation (electrons and holes) decaying in the microsecond time scale. The actual conduction band energy value was estimated to be 0.2 V versus NHE with a band gap of 3.4 eV. Photoinduced electron transfer processes to viologen generates the corresponding viologen radical cation, while holes of MOF-5 oxidizes N,N,N',N'-tetramethyl-p-phenylenediamine. One application investigated for MOF-5 as a semiconductor has been the shape-selective photocatalyzed degradation of phenol in aqueous solutions.
Alvaro
Mercedes
M
Instituto de Tecnología Química, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain.
Carbonell
Esther
E
Ferrer
Belén
B
Llabrés i Xamena
Francesc X
FX
Garcia
Hermenegildo
H