Facile fabrication of titanium dioxide/ fullerene nanocompositeand its enhanced visible photocatalytic activity.
作者：?Xuan Zhang*, Qi Wang, Lan-Hua Zou,Jia-Wen You.
關鍵字：Titanium dioxide, Fullerene, Nanocomposite, Visible light, Photocatalyst
論文來源：期刊
具體來源：J. Colloid Interf. Sci., 2016, 466, 56–61.
發(fā)表時間：2016年
Titanium dioxide (TiO2)/fullerene hybrid nanocomposite was facilely fabricated by mixing TiO2 and polycarboxylic acid functionalized fullerene under an ultrasonication–evaporation method. It was found that the TiO2/fullerene composite could serve as an efficient and reusable photocatalyst for degradation of rhodamine B dye under visible light (k > 400 nm). The as-prepared photocatalyst was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and diffuse reflection spectroscopy (DRS). The degradation experiments revealed that the photocatalytic activity strongly depends on the contents of fullerene from 0.5% to 3% mass ratio. The incorporation of fullerene into TiO2 efficiently extended the absorption spectrum of photocatalyst to visible light region, enhanced the adsorption capacity and degradation efficiency, resulting from a synergistic effect of fullerene and TiO2. The trapping experiments demonstrated that both the photo-generated hole (h+) and the reactive oxygen species such as superoxide anion radical were involved in the photocatalytic reaction.