WO_3颗粒修饰TiO_2纳米锥的制备及其光催化性能研究

Preparation and Photocatalytic Properties of TiO_2 Nano-awl Modified by WO_3 Particles

采用水热法、浸渍法后退火的方法制备WO3-Ti O2纳米锥薄膜。紫外-可见光谱结果表明生成的WO3-Ti O2纳米锥薄膜的吸收边延长到可见光范围,达到480 nm。光催化结果表明,样品WO3-Ti O2纳米锥薄膜比纯Ti O2纳米锥薄膜具有更好的光催化性能,经过10次循环降解实验后,其降解率仍然能够达到96.8%,显示其具有良好的循环稳定性。

WO3-Ti O2nano-awl were prepared by hydrothermal method,wet impregnation and annealing treatment sequently. The ultraviolet-visible（ UV-vis） absorption spectra show that the WO3-Ti O2 nanoawl could induce the red-shift of absorption edge and exhibit a broad absorption band in the visible region to 480 nm. The photocatalytic experiment results reveal that WO3-Ti O2 possesses higher photocatalytic activities toward methyl orange than pure Ti O2nano-awl. The degradation efficiency of 96. 8% after 10 cycles indicate that the as-prepared WO3-Ti O2 composite photocatalysts exhibit excellent long-time recyclable ability for the degradation of contaminants.