Photocatalytic Performance of Nitrogen‐Doped and Cu 2+ and Ag + Co‐Doped Sodium Trititanate

Nano‐sized (i) N‐doped sodium trititanate and (ii) N and Cu 2+ (Ag + ) co‐doped sodium trititanates CuTi 3 NO 6−x (Ag 2 Ti 3 NO 6−x ) were prepared by a solid‐state and ion‐exchange methods, respectively. The materials were characterized by EDS , PXRD , XPS , FESEM , TEM , UV –visible DRS , and Raman spectroscopy. All the materials were crystallized in monoclinic lattice with P21/m space group. The bandgap energy of all the samples was deduced from their UV –visible DRS profiles. Visible‐light‐induced photocatalytic oxidation of the methylene blue ( MB ) and methyl orange ( MO ), cyclohexene and phenol, was examined. The Ag + co‐doped trititanate exhibited the highest photocatalytic activity among the materials investigated.