溶胶凝胶模板法制备SiO_2:Sm^(3+)纳米阵列材料

SiO_2:Sm^(3+) Micro-nano Arrays Prepared by Sol-Gel and Template Process

采用溶胶凝胶模板法制备了不同Sm3+掺量的SiO2∶Sm3+纳米阵列材料,通过SEM、EDS、FTIR等对材料的形貌和结构进行测试表征。FTIR分析表明Sm3+进入SiO2网络结构形成了Si-O-Sm键。SEM、EDS分析显示Sm3+掺量的增大促使阵列由纳米管向纳米线的转变。此外,腐蚀清洗等后处理工艺对保持纳米阵列的形貌至关重要。最后,讨论了溶胶凝胶模板法制备SiO2∶Sm3+纳米阵列的机理。

Directional aligned SiO2∶Sm^3＋ nano arrays with different doping concentrations of Sm^3＋ were synthesized in nanoporous anodic aluminum oxide template by sol-gel process. The SiO2∶Sm^3＋ nano arrays were structurally characterized by FTIR, SEM and EDS. FTIR results reveal that the samarium ion has been incorporated into the framework of SiO2 by the deformation vibration of Si-O-Sm linkages. From SEM and EDS measurements, it is shown that nanotube arrays turn to nanoline arrays with the increasing doping concentrations of Sm^3＋, and corrosion and purgation techniques are also important to preserve the nano arrays. Finally, the growth mechanism of SiO2∶Sm^3＋ nano arrays through sol-gel membrane process was proposed.