Simple Hydrothermal Synthesis of Nanostructured and Nanorod Zn–Al Complex Oxides as Novel Nanocatalysts

Nanoparticles of Zn–Al complex oxides (see Figure) have been successfully synthesized in large quantities using a simple hydrothermal process without a surfactant. When these nanomaterials with high surface areas are used as the catalyst for selective reduction of NO_x, they show high activity, thermal/hydrothermal stability, and high selectivity to N₂. The results indicate good potential for application of these new nanomaterials as environmental catalysts.