Homogeneous nanoporous silica films were prepared by colloidal silica derived by sol-gel process of tetraethylorthosilicate (TEOS) catalyzed with HNO3.

• 以HNO3为催化剂,用正硅酸乙酯(TEOS)溶胶-凝胶工艺制备纳米多孔二氧化硅薄膜。