无电沉积高密度钯金属纳米线阵列

利用介孔氧化硅薄膜作为模板,通过无电沉积路线在介孔薄膜孔道内合成了高密度钯金属纳米线阵列.利用介孔薄膜导向剂的疏水区作为载体,引进钯金属疏水化合物并经热解和还原,得到钯微粒,以此为催化中心引发无电沉积,避免了传统无电沉积复杂的工艺过程.结果表明,纳米线尺寸均一,长径比大于60,完全填充了介孔薄膜的孔道,并可通过介孔模板孔径的选择对纳米线直径加以调控.

High Density Palladium Nanowire Arrays Synthesized by an Electroless Deposition Route

An electroless deposition route was employed to incorporate high density palladium nanowire arrays into the pore channels of mesoporous thin films(MTFs) which served as templates. The hydrophobic core of direct agent of MTFs was utilized as a carrier to introduce hydrophobic compound of palladium metal into the inner surface of MTFs. After pyrolysis and reduction by hydrogen, the catalysis centers were obtained to initiate the electroless deposition process, which avoid the complicated procedures of conventional electroless deposition. The results indicate that the synthesized nanowires have been fully filled into the pore channels of MTFs with a uniform size and an aspect ratio higher than 60. The diameter of nanowires could be adjusted via the selection of the different mesoporous templates.