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Fowl-dropping apatite (Ca10-z[PO4]6-z [OH]2-z) synthesized from carbonized, incinerated fowl droppings contains PO4 and OH groups that are partially substituted by CO3 2- ions. It shows stronger ion conductivity than commercially available hydroxyapatite in a wide range of temperatures from 23°C to 800°C. Fowl-dropping apatite readily adsorbs NO2 and SO2 gases and, without re-releasing these gases, slowly decomposes them at room temperature under sunlight via ultraviolet-visible (UV-Vis) irradiation. A limited amount of minerals and organics contained in fowl droppings causes light-induced activities in fowl-dropping apatite with a crystal structure that has a developed c face; this initiates excitation-induced atomic transfer on the solid surface derived from PO4 exposed on the c face, which then advances the decomposition reaction. [ABSTRACT FROM AUTHOR]

Abstract: In the present study, permanently magnetic barium ferrite foams synthesized using a replication technique were characterized. Structural analysis have shown that the products are single phase of BaFe12O19 and pore sizes reach up to 1mm in diameter with a significantly uniform distribution. Magnetic properties were examined and compared with that of a sintered compact sample. It was observed that magnets become slightly harder with porosity. Our findings reveal that these materials may be applied to different technologies and can be used for understanding the physical interactions of hybrid structures. [Copyright &y& Elsevier]