摘要
锰通常以3种价态存在（Mn^2＋，Mn^3＋和Mn^4＋）．相应的氧化物为MnO、MnO2、Mn2O3和Mn3O4，其中二氧化锰是重要的电极活性材料和氧化还原反应的催化剂。现已知二氧化锰有5种晶型结构，不同晶型结构的二氧化锰的物理和化学性能均不相同。
α-MnO2 and β-MnO2 nanorods were prepared directly by facile hydrothermal process at 150 ℃ and 220 ℃, respectively. The as-prepared α-MnO2 and β-MnO2 nanorods were shown to be phase-pure single crystallites as evidenced by XRD, TEM and SEM results. Further experiments show that the as-prepared α-MnO2 and β- MnO2 nanorods have catalytic effect on the oxidation and decomposition of the methylene blue （MB） dye with H2O2. The catalytic activity of β-MnO2 is much higher than that of α-MnO2.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2007年第5期919-922,共4页
Chinese Journal of Inorganic Chemistry
基金
福建省自然科学基金(No.2006J0153
E0610006)资助项目。
