β-MnO2 nanowires: A novel ozonation catalyst for water treatment

Using Mn(NO3)2 and ozone as raw materials, β-MnO2 nanowires with diameters of about 6–12 nm, lengths of 2–5 μm and surface area of 73.54 m2 g−1 were synthesized by a simple hydrothermal process. The influences of synthesis conditions such as hydrothermal temperature, reaction time and ozone were investigated, and the growth process of β-MnO2 nanowires was discussed. The catalytic properties of β-MnO2 nanowires for the degradation of phenol were evaluated. β-MnO2 nanowires revealed good separability and remarkable catalysis for the degradation of phenol.