Preparation and Photoelectrochemical Properties of Multilayered WS_2 Coated Titanium Dioxide Nanocomposites

摘要

In this paper, nanocomposite titanium dioxide and tungsten sulfide (TiO_2-WS_2) was prepared through high-energy ball milling. The images of scanning electron microscopy (SEM) show that particle size of the as-prepared nanocomposites is approximately ～300 nm. The analysis of X-ray diffraction (XRD) indicates formation of a few layers WS_2 anchored on TiO_2 nanoparticle surface, which present enhancement (＞ 90%) of visible light absorption after 32 hours ball milling. The photocurrent of the nanocomposite TiO_2-WS_2 correspondently increases about 10% under UV illumination.