TY - JOUR
T1 - Iron phthalocyanine supported on silica or encapsulated inside zeolite Y as solid photocatalysts for the degradation of phenols and sulfur heterocycles
AU - Alvaro, Mercedes
AU - Carbonell Llopis, Esther
AU - Esplá, Mercedes
AU - Garcia, Hermenegildo
PY - 2005/4/15
Y1 - 2005/4/15
N2 - The photocatalytic activity of iron phthalocyanine adsorbed on silica (FePc/SiO2) or encapsulated within NaY zeolite (FePc@NaY) towards the degradation of two model compounds using hydrogen peroxide as oxidant has been determined. It was found that while FePc/SiO2 exhibits higher intrinsic activity than FePc@NaY for the degradation of phenol in water, FePc/SiO2 cannot be used as heterogeneous photocatalyst in organic solvents due to self-degradation and/or desorption of the iron phthalocyanine from the silica surface to the solution. Thus, for the oxidative photodegradation of benzothiophene in acetonitrile using FePc/SiO2 as photocatalyst (a model reaction with importance in the fuel industry), the silica becomes colorless and without possibility of reuse. In contrast, FePc@NaY, in where iron phthalocyanine is permanently immobilized inside the zeolite pores, can be recovered by filtration after the photodegradation of benzothiophene in acetonitrile and reused.
AB - The photocatalytic activity of iron phthalocyanine adsorbed on silica (FePc/SiO2) or encapsulated within NaY zeolite (FePc@NaY) towards the degradation of two model compounds using hydrogen peroxide as oxidant has been determined. It was found that while FePc/SiO2 exhibits higher intrinsic activity than FePc@NaY for the degradation of phenol in water, FePc/SiO2 cannot be used as heterogeneous photocatalyst in organic solvents due to self-degradation and/or desorption of the iron phthalocyanine from the silica surface to the solution. Thus, for the oxidative photodegradation of benzothiophene in acetonitrile using FePc/SiO2 as photocatalyst (a model reaction with importance in the fuel industry), the silica becomes colorless and without possibility of reuse. In contrast, FePc@NaY, in where iron phthalocyanine is permanently immobilized inside the zeolite pores, can be recovered by filtration after the photodegradation of benzothiophene in acetonitrile and reused.
KW - Degradation of benzothiophene
KW - Iron phthalocyanine
KW - Ship-in-a-bottle synthesis
KW - Zeolite encapsulated photocatalyst
UR - http://www.scopus.com/inward/record.url?scp=14844314897&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2004.10.003
DO - 10.1016/j.apcatb.2004.10.003
M3 - Article
AN - SCOPUS:14844314897
SN - 0926-3373
VL - 57
SP - 37
EP - 42
JO - Applied Catalysis. B: Environmental
JF - Applied Catalysis. B: Environmental
IS - 1
ER -