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利用化学浴沉积(CBD)结合热解工艺制备了WO_3修饰TiO_2纳米管(WTN)阵列,且WTN阵列分布均匀。通过改变沉积时间可调整WTN的钨含量。利用SEM、EDX、XRD对WTN进行了表征。结果表明,阴极氧化后,TiO_2纳米管生长于钛体基体上,纳米管的内径为90~120 nm,外径为120~160 nm,壁厚在30~60 nm范围,长约39μm。经C.I.硫化红14的有效去除证实,修饰TiO_2纳米管的WO_3增强了WTN光催化活性,在可见光照射下,所制备复合膜光催化活性优于未修饰纳米管阵列(TN)。
WO_3 modified TiO_2 nanotubes (WTN) arrays were prepared by chemical bath deposition (CBD) combined with pyrolysis process, and WTN arrays were evenly distributed. By changing the deposition time can be adjusted WTN tungsten content. WTN was characterized by SEM, EDX and XRD. The results show that TiO 2 nanotubes grow on titanium matrix after cathodic oxidation. The nanotubes have an inner diameter of 90-120 nm, an outer diameter of 120-160 nm, a wall thickness of 30-60 nm and a length of about 39 μm. The removal of WO3 by TiO 2 nanotubes enhanced the photocatalytic activity of WTN. The photocatalytic activity of the prepared composite films was better than that of unmodified nanotubes (CNTs) under visible light irradiation.