(中南大學(xué) 化學(xué)化工學(xué)院，長沙 410083)
摘 要:
關(guān)鍵字: 三氧化鎢；釔摻雜；光催化；水分解
（College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China）
Abstract:Low amount of Y3+(0.05%, mass fraction) doped WO3 samples were prepared by the solid-state sintering method and characterized by XRD, XPS and DRS. The photocatalytic activity of oxygen evolution from water was investigated while Fe3+ as electron acceptor. The results show that 0.05% Y3+ dopant can make the optic response range of WO3 catalysts expand to the visual light obviously. The analytical results of XPS indicate that Y3+-doping can increase the density of the surface oxygen vacancies of catalysts. In the experiment of water splitting to oxygen at the visible radiation, the rate of oxygen evolution for 0.05% Y3+ doped WO3 is 161.3 μmol/(L∙h), which is 1.7 times of that of pure WO3
Key words: tungsten trioxide; Y3+-doping; photocatalytic; water splitting
