中文摘要：

采用阳极氧化法制备出二氧化钛纳米管阵列,通过光化学还原Ag＋的方法,在二氧化钛纳米管表面负载了Ag纳米颗粒.利用扫描电镜（SEM）、X射线衍射仪（XRD）、紫外-可见光谱（UV-Vis）和表面光电压测量仪（SPS）对产物进行了表征.结果表明,该Ag/TiO2纳米管在可见光区域表现出较强的吸收性能.SPS测量表明,随着Ag颗粒浓度的增加,表面光电压信号明显增强.

英文摘要：

Titanium dioxide nanotubes were prepared by anodization and modified with Ag nanoparticles through photochemical reduction of Ag＋. The samples were characterized by scanning electron microscopy（SEM）, X- ray diffraction（XRD）, UV-visible spectroscopy（UV-Vis） and surface photovoltage spectroscopy（SPS）. The results exhibit that the Ag/TiO2 nanotubes show strong absorption in the visible region. And the SPS measurements show that with increasing concentration of AgNO3, the surface optical voltage signal enhance.