Abstract
TiO2 nanomaterials were synthesized by a chemical vapor condensation and loaded with 2–10wt% manganese by impregnation. Thermally treated particles were characterized by XRD and EXAFS. Particles with 5wt% Mn content showed the most dispersed Mn components in the supported TiO2 with the lowest crystallinity. BET and HR-TEM showed that their surface area and pore volume increased to 299.5m2g−1 and 0.329cm3g−1, respectively. TPR and XPS showed these particles to have higher oxygen mobility and redox properties than commercial P25 similarly prepared and loaded with 5wt% Mn2O3. They also had greater amounts of Mn3+ groups on their surfaces. 5wt% manganese loaded TiO2 particles fabricated by CVC and impregnation are expected to have broad applicability.
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