title: Chemically modified amino porphyrin/TiO2for the degradation of Acid Black 1 under day light illumination.
abstract: In this paper, for the first time, chemically modified 5,10,15,20-meso-tetra-(para-amino)-phenyl-porphyrin/TiO2(TPAPP/TiO2) was prepared and used for the degradation of an azo dye Acid Black 1 (AB 1) under direct sunlight. Initially, TiO2was prepared by sol-gel method. Before making a TPAPP/TiO2composite, the surface modification of TiO2was carried out with glycidoxypropyltrimethoxy silane (GPTMS) which acts as a coupling agent. This is an epoxy terminated silane and could easily bond to the amino group of TPAPP through epoxy cleavage. The formation of TPAPP/TiO2was confirmed by different characterization techniques such as FT-IR, XRD, SEM and DRS. The photocatalytic activity of TiO2was highly influenced by TPAPP. A mechanism was proposed for AB 1 degradation by TPAPP/TiO2under sun light.
authors.affiliation: Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal. Electronic address: chemkrishna2006@yahoo.co.in.
authors.forename: Balu
authors.initials: B
authors.lastname: Krishnakumar
authors.affiliation: Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal.
authors.forename: Avula
authors.initials: A
authors.lastname: Balakrishna
authors.affiliation: Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal.
authors.forename: Cláudia T
authors.initials: CT
authors.lastname: Arranja
authors.affiliation: Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal.
authors.forename: Carlos M F
authors.initials: CM
authors.lastname: Dias
authors.affiliation: Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal. Electronic address: asobral@ci.uc.pt.
authors.forename: Abilio J F N
authors.initials: AJ
authors.lastname: Sobral
keywords: Direct sun light; GPTMS; TPAPP/TiO(2); TiO(2)