ent, the size distribution and the micro structure of TiO2 on the cross section of Nafion membrane were discussed. Result s show that the quantity of Ti(OBu)4 and TiO2 in Nafion depends on the soaking solvent. A corre...ent, the size distribution and the micro structure of TiO2 on the cross section of Nafion membrane were discussed. Result s show that the quantity of Ti(OBu)4 and TiO2 in Nafion depends on the soaking solvent. A correlation between the water content in Nafion and the quantity of T iO2 formed was observed. However, the morphologies and the grain size distributi on of nanocrystalline TiO2 in Nafion was not influenced by the water content in Nafion. EDAX analysis indicated that the line and surface distribution of every element content on the cross section of展开更多
Two_dimensional arrays of Cu and Au nanowires have been fabricated by template synthesis method, using the anodic aluminum oxidation films as the template. The morphology of the nanowire array was monitored by atomic ...Two_dimensional arrays of Cu and Au nanowires have been fabricated by template synthesis method, using the anodic aluminum oxidation films as the template. The morphology of the nanowire array was monitored by atomic force microscope (AFM) in the dissolution processes of the alumina film. Based on the probe molecule strategy, the spectral feature of SCN - adsorbed at the Cu and Au nanowires with different diameters has been investigated by surface enhanced Raman spectroscopy (SERS). The results reveal that the intensity of the SERS bands depends on the length of the exposed nanowires. The C≡N stretching vibration frequency (ν CN ) of SCN - up_shifted significantly with the increase of the diameter of the nanowires in the range of 15 nm to 50 nm. This interesting phenomenon is briefly discussed.展开更多
文摘ent, the size distribution and the micro structure of TiO2 on the cross section of Nafion membrane were discussed. Result s show that the quantity of Ti(OBu)4 and TiO2 in Nafion depends on the soaking solvent. A correlation between the water content in Nafion and the quantity of T iO2 formed was observed. However, the morphologies and the grain size distributi on of nanocrystalline TiO2 in Nafion was not influenced by the water content in Nafion. EDAX analysis indicated that the line and surface distribution of every element content on the cross section of
文摘Two_dimensional arrays of Cu and Au nanowires have been fabricated by template synthesis method, using the anodic aluminum oxidation films as the template. The morphology of the nanowire array was monitored by atomic force microscope (AFM) in the dissolution processes of the alumina film. Based on the probe molecule strategy, the spectral feature of SCN - adsorbed at the Cu and Au nanowires with different diameters has been investigated by surface enhanced Raman spectroscopy (SERS). The results reveal that the intensity of the SERS bands depends on the length of the exposed nanowires. The C≡N stretching vibration frequency (ν CN ) of SCN - up_shifted significantly with the increase of the diameter of the nanowires in the range of 15 nm to 50 nm. This interesting phenomenon is briefly discussed.
