摘要
以Bi(NO3)3.5H2O和(NH4)6Mo7O24.4H2O为原料,采用水热法合成了Bi2MoO6光催化剂,并用X射线粉末衍射(XRD)、扫描电镜(SEM)、紫外漫反射(UV-vis)、红外吸收光谱(IR)、Raman光谱等测试手段对催化剂进行了结构和性能表征。测试结果表明,不同表面活性剂和不同溶剂对样品的形貌产生较大影响,但都不影响样品的物相结构。煅烧和添加表面活性剂可以减少晶体的团聚,未煅烧样品比煅烧样品具有更大的比表面积。可见光催化降解罗丹明B溶液的结果表明,颗粒直经为432 nm,厚度为61 nm的片状Bi2MoO6的光催化活性强于毛绒状样品。
Bi2 MoO6 photocatalysts were prepared by hydrothermal method using Bi （ NO3 ） 3 ·5 H20 and （ NH4 ） 6 Mo7 024 ·4H2 O as raw materials. The samples were characterized by X- ray diffraction（ XRD）, scanning electron microscope（ SEM）, and UV -Vis diffusion reflectance spectra（ UV -vis）. The results show that the surfactant has a significant influence on the morphology of Bi2MoO6. The re- sults also show that different surfactants and different solvents have significant influence on the morphologies of Bi2MoO6, but they do not influence the crystal structure of the samples. The non - calcined sample has a larger surface area than the calcined sample. The Bi2MoO6 photocatalysts enhance the photoeatalytic activities for degradation of RhB under visible light irradiation. The result displays that the diameter and the thickness of the samples with schistose texture are 432nm and 61nm, respectively, and its photoeatalytic per- formance is more efficient than that of the sample which looks likea little round balls with lots of fluffs.
出处
《惠州学院学报》
2012年第6期5-10,共6页
Journal of Huizhou University
基金
国家自然科学基金项目(51162026)
广东省高等学校人才引进专项基金(粤财教[2012]41号
2050205)
惠州学院优秀人才资助项目
