Magnetically recyclable mesoporous iron oxide–silica materials for the degradation of acetaminophen in water under mild conditions. (26th February 2016)

• Record Type: Journal Article
• Authors: Pires, João; Borges, Susana; Carvalho, Ana; Pereira, Clara; Pereira, André M.; Fernandes, Carlos; Araújo, João P.; Freire, Cristina
• Is Part Of: Polyhedron. Volume 106(2016)
• Page Start: 125
• Page End: 131
• Publication Date: 2016-02-26
• Subjects: SBA-15 -- Silica -- Magnetic iron oxide -- Catalyst -- Acetaminophen; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2016.01.007
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Degradation of the emerging pollutant acetaminophen was made by heterogeneous catalysis, using mild conditions, with magnetic iron oxide immobilized in SBA-15 by two methods that differ in reaction pH and calcination step. Abstract: Nanoporous silica materials of regular porosity (of SBA-15 type) doped with magnetic iron oxide nanoparticles were prepared by two routes that differ essentially in the pH of the reaction medium and calcination step. Both routes produced magnetic SBA-15 materials with regular porosity and containing different loadings of iron oxide particles. The increase of the amount of iron oxide incorporated in SBA-15 was directly related with the increase of the pH during the material synthesis but the magnetic properties also showed a dependence on the type of calcination used. Two of the prepared materials showed relevant results for the catalytic degradation of acetaminophen, a pharmaceutical emerging pollutant. In the present work mild reaction conditions were used, that is, reaction conditions that do not involve imposition of low pH values, a specific radiation source nor high-pressure autoclave.