Controllable synthesis and characterization of α-MnO 2 nanowires
作者： Xiulan Hu , Shoufeng Zhu , Huihong Huang , Jianbo Zhang , Yanqiu Xu
DOI: 10.1016/J.JCRYSGRO.2015.10.020
关键词: Chemical engineering 、 Diffraction 、 Nanowire 、 Electrochemistry 、 Nanotechnology 、 Hydrothermal circulation 、 Alkali metal 、 Nanoparticle 、 Characterization (materials science) 、 Materials science
摘要: Abstract Size controllable α-MnO2 nanowires were synthesized from KMnO4 and ethanol via a low-temperature hydrothermal route assisted with subsequently heat treatment. No acid or alkali was added. XRD SEM results clarified nanoparticles (5–30 nm) began to form at room temperature, then grew up (~12 nm in diameter) when temperature increasing 120–160 °C for an appropriate reaction time. Otherwise, octahedron-like Mn3O4 120 °C more than 4 h 160 °C 2 h. Hydrothermal-synthesized show well thermal-stability even it heated 900 °C. And various size prepared by adjusting treatment of hydrothermal-synthesized range 150 °C 750 °C 3 h, which the strongest diffraction peak (211) plane. The capacity 2 h about 125 F/g, exhibited promising electrochemical property.
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