(中南大学 化学化工学院，长沙 410083)
摘 要: 采用低温固相反应法制备低含量Pr3+(0.05%，质量分数)掺杂的WO3催化材料，采用XRD、XPS和DRS对样品进行表征和分析，考察催化剂在电子接受体Fe3+溶液体系下的光催化分解水制氧活性。结果表明，0.05% Pr3+掺杂可以使WO3样品的光谱响应范围向可见光区拓展。XPS分析表明，Pr3+掺杂可以导致催化剂样品表面氧缺位增加。在可见光辐射下光催化分解水制氧的实验中，0.05% Pr3+掺杂WO3样品的光催化析氧速率高达196.64 μmol/(L∙h)，是未掺杂WO3的2倍
关键字: 镨；三氧化钨；光催化；分解水
（College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China）
Abstract:Low content Pr3+(0.05%, mass fraction) doped WO3 samples were prepared by solid state reaction at low temperature and characterized by XRD, XPS and DRS. The photocatalytic activity for oxygen evolution was investigated. The results show that 0.05% Pr3+ dopant can make the optic response range of WO3 catalysts expand to the visual light obviously. The analytical results of XPS indicate that Pr3+-doping can result in the increase of the density of surface oxygen vacancies of catalysts. In the experiment of water splitting to oxygen at the visible radiation, the rate for oxygen evolution of 0.05% Pr3+ doped WO3 is up to 196.64 μmol/(L∙h), which is two times of that of pure WO3
Key words: praseodymium; tungsten trioxide; photocatalytic; water splitting
