Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
J Hazard Mater. 2009 Nov 15;171(1-3):1045-50. doi: 10.1016/j.jhazmat.2009.06.115. Epub 2009 Jun 27.
This work presents a novel approach for preparing TiO(2) nanotube array photocatalyst loaded with highly dispersed Ag nanoparticles through an ultrasound aided photochemical route. The Ag content loaded on the array was controlled by changing the concentration of AgNO(3) solution. The Ag-TiO(2) nanotube arrays were characterized by SEM, XRD, XPS and UV-vis absorption. The effects of Ag content on the photoelectrochemical (PEC) property and photocatalytic activity of TiO(2) nanotube array electrode were studied. The results showed that Ag loading significantly enhanced the photocurrent and photocatalytic degradation rate of TiO(2) nanotube array under UV-light irradiation. The photocurrent and photocatalytic degradation rate of Ag-TiO(2) nanotube array prepared in 0.006 M AgNO(3) solution were about 1.2 and 3.7 times as that of pure TiO(2) nanotube array, respectively.
这项工作提出了一种通过超声辅助光化学途径制备负载高度分散的 Ag 纳米粒子的 TiO(2) 纳米管阵列光催化剂的新方法。通过改变 AgNO(3)溶液的浓度来控制负载在阵列上的 Ag 含量。Ag-TiO(2) 纳米管阵列采用 SEM、XRD、XPS 和 UV-vis 吸收进行了表征。研究了 Ag 含量对 TiO(2) 纳米管阵列电极光电化学（PEC）性能和光催化活性的影响。结果表明，Ag 负载显著提高了 TiO(2) 纳米管阵列在紫外光照射下的光电流和光催化降解速率。在 0.006 M AgNO(3)溶液中制备的 Ag-TiO(2) 纳米管阵列的光电流和光催化降解速率分别约为纯 TiO(2) 纳米管阵列的 1.2 和 3.7 倍。
