BiOCl_xBr_(1-x)溶剂热法的制备及其光催化氧化性能  

The preparation of BiOCl_xBr_(1-x) with solvothermal process and its photocatalytic oxidation performance

作　　者：杨帆[1] 宋金玲[1] 张胤[1] 王强[1] 李伦 陈家宽 孙贺伟 王瑞芬[1] YANG Fan;SONG Jin ling;ZHANG Yin;WANG Qiang;LI lun;CHEN Jia kuan;SUN He wei;WANG Rui fen(Materials and Metallurgy School, Inner Mongolia University of Science and Technology, Baotou 014010,China)

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2017年第3期205-210,共6页Journal of Inner Mongolia University of Science and Technology

基　　金：国家自然科学基金资助项目(21407084);内蒙古自然科学基金资助项目(2014BS0509;2015MS0571);内蒙古科技大学2015年大学生创业基金(2015062;2015089)

摘　　要：本文采用溶剂热法制备了不同Cl-Br摩尔比的BiOCl_xBr_(1-x),并借助X射线衍射仪(XRD)、扫描电子显微镜(SEM)及透射电子显微镜(TEM)对其进行了检测与表征.结果表明,该试验方法能够得到较好晶体结构的BiOCl_xBr_(1-x)光催化剂.通过使用不同Cl-Br摩尔比的BiOCl_xBr_(1-x)对甲基橙(MO)溶液进行降解后发现,BiOCl_(0.4)Br_(0.6)光催化剂的降解性能最好,在180 min时其降解率可达39.7%,优于单卤纯BiOCl(180 min时降解率为13.6%)和纯BiOBr(180 min时降解率为21.8%)的降解性能.然后,又使用紫外可见光谱仪(UV-vis)、光致发光光谱仪(PL)对BiOCl_xBr_(1-x)光催化性能进行了检测分析;为进一步弄清BiOCl_xBr_(1-x)的光催化机理,又对加入抑制剂BiOCl_(0.4)Br_(0.6)光催化剂进行了对比试验,结果表明h+在光降解过程中起主要的催化作用.BiOClxBr1-x with different Cl-Br mole ratios made by solvothermal method was studied, and was characteristed by X-ray diffraction （XRD）, scanning electron microscopy （SEM） and transmission electron microscope （TEM）. The results show that by using this method, BiOClxBr1-x photocatalyst with better crystal structure can be obtained. After the degradation of methyl orange （MO） solution for BiOClxBr1-x with different Cl-Br molar ratios, it was found that material BiOCl0.4Br0.6 had the best degradation performance, and the degradation rate was up to 39 7% at 180 min,and the degradation performance of the pure BiOCl （degradation rate of 13 6% at 180 min） was better than the pure BiOBr （21 8% degradation at 180 min）. Then, the photocatalytic activity of BiOClxBr1-x was detected by UV-vis and photoluminescence spectroscopy （PL）. In order to further understand the photocatalytic mechanism of BiOClxBr1-x, inhibitors were adopted in BiOCl0.4Br0.6 photocatalyst, and the results show that the h＋ plays a major role in the photodegradation process.

关 键 词：卤氧化铋 溶剂热法 光催化 有机污染物 

分 类 号：O643.361[理学—物理化学] O644.1[理学—化学]