燃烧合成氧空位型BiOCl及其可见光催化活性综合实验设计  

Design on comprehensive experiment for combustion synthesis of oxygen vacancy type BiOCl and its visible photocatalytic activity

作　　者：刘瑞红[1] 李义磊 李发堂[1] Liu Ruihong;Li Yilei;Li Fatang(College of Science, Hebei University of Science and Technology, Shijiazhuang 050021, China)

机构地区：[1]河北科技大学理学院,河北石家庄050021

出　　处：《实验技术与管理》2018年第5期68-71,共4页Experimental Technology and Management

基　　金：国家自然科学基金项目(21376061);河北省高等学校科学技术研究项目(Z2017012);河北省高等教育教学改革研究项目(2012GJJG073)

摘　　要：通过构建还原气氛以离子液体自燃烧一步合成了具有表面氧空位的BiOCl光催化剂,以X射线衍射、透射电镜等仪器对其进行了分析和表征,以可见光下罗丹明B的降解评价其催化活性,考察了燃料用量对其催化活性的影响。结果表明,以二乙胺盐酸盐为燃料和反应物,可以合成具有氧空位的BiOCl,其禁带宽度由无氧空位的3.15eV降低到2.72eV,可见光下罗丹明B 10min即可基本实现完全脱色。该实验涵盖纳米材料、光催化、燃烧合成、离子液体及测试表征等多个知识点,有利于提高学生综合能力和素质。A BiOCl photocatalyst with the surface oxygen vacancies is synthesized in one step by selfcombustion of ionic liquid through building a reduction atmosphere.It is analyzed and characterized by the Xray diffraction,transmission electron microscopy,UV visible diffuse reflectance absorption,etc.The catalytic activity is evaluated by the degradation of Rhodamine B under visible light,and the effect of fuel consumption on its catalytic activity is investigated.The results show that,with two ethylamine hydrochloride as fuel and reactant,BiOCl with oxygen vacancies can be synthesized,its forbidden band width decreases from 3.15 eV to2.72 eV,and the total decolorization of Rhodamine B can be realized in 10 min under visible light.This experiment covers many knowledge points such as nanomaterials,photocatalysis,combustion synthesis,ionic liquid,test characterization,etc.,which is helpful to improve the students’ comprehensive ability and quality.

关 键 词：BiOCl 综合实验 燃烧合成 表面氧空位 光催化 

分 类 号：TB321[一般工业技术—材料科学与工程] G642.423[文化科学—高等教育学]