Chen Zimei, Kuckling Dirk, Tiemann Michael
Department of Chemistry-Organic and Macromolecular Chemistry, Paderborn University, 33098 Paderborn, Germany.
Department of Chemistry-Inorganic Functional Materials, Paderborn University, 33098 Paderborn, Germany.
Nanomaterials (Basel). 2018 Mar 22;8(4):186. doi: 10.3390/nano8040186.
We describe the synthesis of mesoporous Al₂O₃ and MgO layers on silicon wafer substrates by using poly(dimethylacrylamide) hydrogels as porogenic matrices. Hydrogel films are prepared by spreading the polymer through spin-coating, followed by photo-cross-linking and anchoring to the substrate surface. The metal oxides are obtained by swelling the hydrogels in the respective metal nitrate solutions and subsequent thermal conversion. Combustion of the hydrogel results in mesoporous metal oxide layers with thicknesses in the μm range and high specific surface areas up to 558 m²∙g. Materials are characterized by SEM, FIB ablation, EDX, and Kr physisorption porosimetry.
我们描述了通过使用聚（二甲基丙烯酰胺）水凝胶作为致孔基质在硅片衬底上合成介孔Al₂O₃和MgO层的方法。水凝胶膜通过旋涂法铺展聚合物制备，随后进行光交联并锚固到衬底表面。金属氧化物是通过在相应的金属硝酸盐溶液中溶胀水凝胶并随后进行热转化而获得的。水凝胶的燃烧产生厚度在μm范围内且比表面积高达558 m²∙g的介孔金属氧化物层。材料通过扫描电子显微镜（SEM）、聚焦离子束（FIB）烧蚀、能量色散X射线光谱（EDX）和氪物理吸附孔隙率测定法进行表征。
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