摘要
采用水热法经调控nBi/nMo比和pH值,制备了α-Bi2Mo3O12钠米板和γ-Bi2MoO6纳米片2种钼酸铋材料。结果表明:在低pH值和较高的钼浓度下可合成α-Bi2Mo3O12,高pH值和低的钼浓度导致了γ-Bi2MoO6的形成,并对其形成机理进行了探讨;光物理和光催化性能研究表明,Aurivillius结构的γ-Bi2MoO6在可见光区有较强的吸收和较高的光催化性能,同时对影响2种钼酸铋光催化活性的因素进行了讨论。
Two kinds of bismuth molybdates： α-Bi2Mo3O12 nanotablet and γ-Bi2MoO6 nanoplate were prepared employing mild hydrothermal methods. By tuning the nBi/nMo ratio and pH values, controlled formation of bismuth molybdates can be achieved. Low pH value and high concentration of molybdenum lead to the formation of α-Bi2Mo3O12. High pH value and low concentration of molybdenum favor the formation of γ-Bi2MoO6. Photophysical and photocatalytic studies indicate that γ-Bi2MoO6 nanoplate shows more intense absorption band in the visible light region and better photocatalytic activity than α-Bi2Mo3O12 nanotablet under visible light irradiation. The effect of factors on photocatalytic activities for two kinds of photocatalysts was also discussed.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2009年第3期512-516,共5页
Chinese Journal of Inorganic Chemistry
基金
北京市自然科学基金(No.4082008)资助项目
