Park Gwi Ok, Shon Jeong Kuk, Kim Yong Ho, Kim Ji Man
J Nanosci Nanotechnol. 2015 Mar;15(3):2441-5. doi: 10.1166/jnn.2015.10263.
Ordered mesoporous MnO, MnO4, Mn2O3 and MnO2 materials with 3-D pore structure were suc- cessfully synthesized via a nano-replication method by using ordered mesoporous silica, KIT-6 (Cubic Ia3d space group mesostructure) as the template under specific oxidation and reduction conditions. Notably, ordered mesoporous MnO with a crystalline wall (rock salt structure) was syn- thesized for the first time, to the best of our knowledge. The synthesis of the ordered mesoporous MnO was achieved by reducing the ordered mesoporous Mn3O4 under an H2 atmosphere, while preserving the ordered mesostructure and crystalline wall throughout the solid/solid transformation. All of the ordered mesoporous manganese oxides with different crystal structures and oxidation states demonstrated almost the same spherical-like morphology with several hundred nanometers of particles. The synthesized ordered mesoporous manganese oxides had uniform dual mesopores (2-3 nm, and ~20 nm) and crystalline frameworks with large surface areas (86-140 m2/g) and pore volumes (0.27-0.33 cm3/g).
通过纳米复制法，以有序介孔二氧化硅KIT-6（立方Ia3d空间群介观结构）为模板，在特定的氧化还原条件下，成功合成了具有三维孔结构的有序介孔MnO、MnO₄、Mn₂O₃和MnO₂材料。值得注意的是，据我们所知，首次合成了具有结晶壁（岩盐结构）的有序介孔MnO。有序介孔MnO的合成是通过在H₂气氛下还原有序介孔Mn₃O₄实现的，同时在整个固/固转变过程中保留有序介观结构和结晶壁。所有具有不同晶体结构和氧化态的有序介孔锰氧化物都表现出几乎相同的球形形态，颗粒尺寸为几百纳米。合成的有序介孔锰氧化物具有均匀的双介孔（2 - 3纳米和约20纳米）以及具有大表面积（86 - 140平方米/克）和孔体积（0.27 - 0.33立方厘米/克）的结晶骨架。
