Síntese e Caracterização de MCM-41 e SBA-15, Imobilizadas com Hematoporfirina e Metaloporfirinas com Cobre II

Abstract

This work consists of three steps for immobilizing hematoporphyrin and metaloporphyrin in porous materials of the type MCM- 41 and SBA-15. The first step is the synthesis of porous materials, using sol-gel method. The synthesis of MCM-41 was carried out in basic medium with a cationic surfactant hexadecyltrimethylammonium bromide, while the synthesis of SBA-15 was carried out in acid medium in the presence of the polymeric surfactant P-123. The second step is the metallation of hematoporphyrin with copper II and functionalization with aminopropyltriethoxysilane (APTES). The third stage of this work is the immobilization of the macrocycle functionalized and / or metalated on porous material, MCM-41 and SBA-15. The samples were subjected to analysis of metal content and further characterization of spectroscopic , structural, morphological, thermal and textural properties. MCM-41 material showed microporous profile and SBA-15 showed mesoporous profile with 4.5 nm of diameter Metal content was higher for immobilized samples containing the amino group of APTES. In order to evaluate the potential of the immobilized material in biological tests, preliminary l tests were done with two fungi that act directly on the contamination of food and plants, Aspergillus oryzae and Penicillium citrinum, which have shown promising results.