Abstract：
:This study principally focused on a new kind of photochemical reaction catalyst: porphyrin and phthalocyanine complexes. In a first step, the preparation of the catalysts was optimized. A resin has been chosen to be the support of the complexes. Efficiency of catalytic activity is performed on the degradation of a pesticide: atrazine. The best atrazine degradation occurs with 4.6% of complexes versus substrate. The role of the surface has also been shown to be important. Then, their performances were demonstrated in terms of kinetics and degradation routes, compared to a classical catalyst: titanium dioxide. This study seeks to assess the efficiency of these systems both in a mercury lamp reactor and under solar irradiation which reduces energy costs. The best atrazine degradation half-life found for the complexes is about 200 min with the iron phthalocyanine. These catalysts exhibit particular oxidation activities. Indeed, the degradation routes have been found different between the semi-conductor and the metallic complexes. These complexes are able to cleave the triazinic ring more efficiently than the titanium dioxide.
journal_name
Chemospherejournal_title
Chemosphereauthors
Héquet V,Le Cloirec P,Gonzalez C,Meunier Bdoi
10.1016/s0045-6535(99)00474-9subject
Has Abstractpub_date
2000-08-01 00:00:00pages
379-86issue
3eissn
0045-6535issn
1879-1298pii
S0045-6535(99)00474-9journal_volume
41pub_type
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