Yb_2O_3/TiO_2纳米粒子的制备及其超声波/紫外光协同催化降解邻硝基苯酚的研究  

Preparation of Nanometer Yb_2O_3/TiO_2 Particles and Degradation of O-nitraphenol by US/UV Synergetic Catalysis Technology

作　　者：李国祥[1] 张俊卿[2] 冯德荣[3] 郭军平[4] 

机构地区：[1]内蒙古科技大学生物与化学工程学院,内蒙古包头014010 [2]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [3]包头明天科技股份有限公司,内蒙古包头014010 [4]天津和平海湾电源集团有限公司,天津300384

出　　处：《稀土》2007年第6期39-42,共4页Chinese Rare Earths

基　　金：内蒙古自然科学基金资助项目(200308020216)

摘　　要：以钛酸丁酯为原料,用溶胶-凝胶(Sol-gel)法制备了Yb2O3/TiO2纳米粒子。采用透射电子显微镜和X光衍射仪对粉体的粒径、物相和形貌进行了表征。研究了超声波/紫外光协同催化氧化水中邻硝基苯酚的降解效果,考察了邻硝基苯酚的起始浓度、超声波声强、反应温度和催化剂投加量对邻硝基苯酚降解速率的影响。研究结果表明,超声波/紫外光协同催化氧化要比单独超声波或光化学处理效果显著,证实了声光联合技术具有明显的协同效应。Nanometer Yb2O3/TiO2 powder was obtained from tetrabutyl titanate by solgel method. The size, structure and appearance were analyzed by TEM and XRD. O--nitraphenol solution was treated by US（ultrasound）/ UV（ultraviolet） synergetic catalysis technology and the major influencing factors such as the sound intensity ,initial o--nitraphenol concentration,the amount of catalyst and medium temperature were examined in this paper. The result showed that US/UV synergetic technology was superior to each of ultrasound irradiation and photochemistry alone. The significant synergetic effect of US/UV was identified.

关 键 词：溶胶-凝胶 Yb2O3/TiO2 邻硝基苯酚 超声波/紫外光 催化剂 协同效应 

分 类 号：TQ134.1[化学工程—无机化工] O614.33[理学—无机化学]