介孔有机硅
模板
介孔材料
纳米孔
材料科学
PMOS逻辑
共聚物
化学工程
模板方法模式
高氯酸铵
催化作用
无机化学
纳米技术
有机化学
化学
介孔二氧化硅
聚合物
复合材料
晶体管
电压
工程类
物理
复合数
量子力学
作者
Huaqiang Cai,Dongyuan Zhao
标识
DOI:10.1016/j.micromeso.2008.08.049
摘要
A new method of ammonium perchlorate (AP) oxidation has been developed to remove organic templates of mesoporous materials at relatively low temperature (80–120 °C). Periodic mesoporous organosilicas (PMOs) with ethane-bridged prepared by using triblock copolymers P123 as a template are chosen as an example to demonstrate the AP treatment method. The resultant template-free PMO-80 products at 80 °C have a larger pore size (7.2 nm) and volume (1.40 cm3/g) compared to solvent-extracted sample (6.9 nm and 1.06 cm3/g). No framework shrinkage is observed based on XRD results. TEM images show that PMO-80 sample has a highly ordered mesostructure. This template removal strategy can be extended to prepare other nanoporous materials like pure mesoporous silicas.
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