Shi Keying, Chi Yujuan, Yu Haitao, Xin Baifu, Fu Honggang
Laboratory of Physical Chemistry, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.
J Phys Chem B. 2005 Feb 24;109(7):2546-51. doi: 10.1021/jp0463316.
The three-dimensional (3D) accessible pore structures (Imm space groups) of continuous mesoporous silica SBA-16 thin films have been prepared by a dip-coating technique in nonaqueous media under acidic conditions on indium-tin oxide glass (ITO). The films are oriented with the (111) crystal plane perpendicular to the surface of the film. On one hand, deposition of iron metal into the mesopores of SBA-16 films was achieved by using an electrochemical method. The Fe2O3 nanowire arrays were synthesized. The crystalline structures of porous Fe2O3 nanowires and nanorods were studied via TEM, SEM, and XRD. On the other hand, a small amount of Fe was deposited into the pores of the SBA-16 thin film as a catalyst, and carbon nanotube arrays formed inside the pores of SBA-16 film were fabricated by catalytic decomposition of acetylene at 700 degrees C. The second-order template synthesis method for preparing the ordered array of carbon nanotubes filled with Fe has been used. The carbon nanotubes are very uniform in diameter and length and are aligned vertically with respect to the SBA-16 film.
通过在酸性条件下于非水介质中采用浸涂技术，在氧化铟锡玻璃（ITO）上制备了连续介孔二氧化硅SBA - 16薄膜的三维（3D）可及孔结构（Imm空间群）。这些薄膜的（111）晶面垂直于薄膜表面取向。一方面，通过电化学方法将铁金属沉积到SBA - 16薄膜的介孔中，合成了Fe₂O₃纳米线阵列，并通过透射电子显微镜（TEM）、扫描电子显微镜（SEM）和X射线衍射（XRD）研究了多孔Fe₂O₃纳米线和纳米棒的晶体结构。另一方面，将少量铁作为催化剂沉积到SBA - 16薄膜的孔中，通过在700℃下催化分解乙炔，在SBA - 16薄膜的孔内制备了碳纳米管阵列，采用了制备填充有铁的碳纳米管有序阵列的二阶模板合成方法。碳纳米管的直径和长度非常均匀，并且相对于SBA - 16薄膜垂直排列。
