| Abstract: Transition element substituted titanic acid nanotubes were fabricated by a hydrothermal method using transition elements (Cr, Mn, Fe, Co, Ni, Cu) doped anatase TiO2 nanopowders as precursors. The properties of products were characterized by SEM, TEM, XRD, EDX and Raman spectroscopy. The photodegradation performances of transition elements substituted titanic acid nanotubes for methylene blue were studied. The results show that the photocatalytic activities of Co, Fe and Cr substituted titanic acid nanotubes were increased to different extent, while the photocatalytic activities of Cu, Ni and Mn substituted titanic acid nanotubes were decreased evidently, indicating that these ions were poison to photocatalysts. |
