| Bi2MoO6中空微球的制备及其光催化性能 |
| Bi2MoO6 Hollow Microspheres Preparation and Photocatalytic Properties |
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| 摘要: 基于Bi2MoO6与BiOI晶体结构上的相似性,以BiOI为自牺牲模板,通过原位转化法制备得到了Bi2MoO6中空微球。通过对时间演化中间产物以及不同温度下产物的物相和形貌进行分析,得出形成Bi2MoO6中空微球的最佳反应时间为8h,最佳温度为120℃。对所制备的Bi2MoO6中空微球物相、形貌、比表面积以及光学性能进行了研究,表明Bi2MoO6中空微球表面较为疏松,内部为中空结构,具有较大的比表面积,为61m2·g-1。在可见光下,以甲基橙为降解对象,对所制备样品的光催化性能进行了评价。结果表明所制备的Bi2MoO6中空微球能在80min内完全降解甲基橙,性能优于不同时间下的中间产物和片状结构Bi2MoO6的光催化性能,具有优越的可见光光催化性能。 |
| 关键词: 中空微球 比表面积 Bi2MoO6 可见光光催化 甲基橙 |
| 基金项目: 国家自然科学基金(No.51302108)、江苏省自然科学基金(No.BK20130151)和中央高校基本科研业务费专项资金(No.JUSRP51408B)资助项目。 |
| Abstract: Based on the similarity of crystal structure between Bi2MoO6 and BiOI, Bi2MoO6 photocatalyst with hollow structure was prepared by in-situ transformation method using BiOIas self-sacrificing template. The phase and morphology of the intermediates obtained at different reaction temperatures and times during BiOI microspheres transforming to hollow Bi2MoO6 were analyzed. The results showed that the best conditions for preparing Bi2MoO6 hollow microspheres were 8 h and 120 ℃. Besides, the structure, morphology, specific surface area and optical property of the as-prepared Bi2MoO6 hollow microspheres were studied. The results indicated that the surface of the obtained Bi2MoO6 hollow microspheres were relatively loose, and the specific surface area was 61 m2·g-1. Methyl orange (MO) was selected as a pollutant model to evaluate the visible-light photocatalytic activity of the prepared materials. As a result, MOwas completely degraded by Bi2MoO6 hollow microspheres in80 minutes. The photocatalytic activity of Bi2MoO6 hollow microspheres was obviously superior to Bi2MoO6 sheets and the intermediates obtained at different reaction times. |
| Keywords: hollow microsphere specific surface area Bi2MoO6 visible-light-driven photocatalytic methyl orange |
| 投稿时间：2015-04-22 修订日期：2015-09-16 |
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| 张琴,汪晓凤,段芳,陈明清.Bi2MoO6中空微球的制备及其光催化性能[J].无机化学学报,2015,31(11):2152-2158. |
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