Design and Synthesis of Iron-Doped Nanostructured TiO_2 and Its Potential Use in the Photodegration of Hazardous Materials Present in Personal Care Products

摘要

Parabens and phenoxyethanol are chemical compounds widely used as preservatives and antimicrobial agents in cosmetic and personal care products. The issue of their effect on human and environmental health is a particularly topical and relevant one that many national and international agencies reported about the risk from the use of such compounds. In the present paper, iron doped TiO_2 nanoparticles were synthetized and character- ized by morphological and spectroscopic techniques. The proposed synthesis was designed to improve the photo- catalytic activity of the nanostructures towards the two preservatives compounds when irradiated by a visible light, in order to optimize the effect of natural irradiation on the photodegradation of the two compounds. Preliminary photo- catalytic tests showed that the analytes’ concentration in water solutions under illumination in presence of both iron-doped TiO_2 and pure TiO_2 decreased. A sensible enhancement of photocatalysis of both propylparaben and phenoxyethanol was recorded in presence of the Fe-doped nanostructures as a consequence of the physical and chemical properties of the catalyst.