Controllable Synthesis of MnO Nanowires and Application in the Treatment of Phenol at Room Temperature.

Nanosized MnO nanowires are prepared with KMnO and ethanol in mild conditions by facile hydrothermal method. Hydrothermal reaction temperature is optimized to get uniform nanowires. The prepared MnO nanowires exhibit high activity in the treatment of phenol at acid condition and room temperature. The 20 mg MnO nanowires can efficiently dispose of 50 mL phenol solution (0.2 g·L) at pH 2 and 25 °C. The nanowires before and after phenol treatment are characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) and the reaction mechanism is discussed.