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196.64μmol/(L.h),是未掺杂WO3的2倍。
Low content pr^3＋（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% Pr^3＋ dopant can make the optic response range of WO3 catalysts expand to the visual light obviously. The analytical results of XPS indicate that Pr^3＋-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% Pr^3＋ doped WO3 is up to 196.64 μmol/（L.h）, which is two times of that of pure WO3.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2007年第10期1695-1699,共5页
The Chinese Journal of Nonferrous Metals
基金
国家高技术研究发展计划资助项目(2002AA327140)
教育部新世纪优秀人才支持计划资助项目(NCET.05.0691)
关键词
镨
三氧化钨
光催化
分解水
praseodymium
tungsten trioxide
photocatalytic
water splitting
