一维镨掺杂纳米TiO_2水热合成及光催化性能研究  

Preparation and Photocatalytic Property of Pr-doped TiO_2 Nanometer Materials

作　　者：黄凤萍[1] 王帅[1] 张双[1] 李春雪[1] 高玉刚[1] 刘纯[2] 

机构地区：[1]陕西科技大学化学与化工学院,陕西西安710021 [2]咸阳陶瓷研究设计院,陕西咸阳712000

出　　处：《稀土》2015年第4期8-14,共7页Chinese Rare Earths

基　　金："十二五"国家科技支撑计划项目(2013BAJ01B02);陕西科技大学博士基金(BJ09-03)

摘　　要：以钛酸丁酯和硝酸镨为原料,采用水热法制备Pr掺杂的纳米TiO2。通过XRD、SEM以及Raman UVVis DRS等实验方法研究了样品的晶体结构以及光响应性能。结果表明,水热合成条件对镨掺杂纳米TiO2的形貌及光催化性能有显著的影响。其中在5 mol/L的NaOH碱液环境下,控制水热处理温度为150℃,水热时间为12 h,掺镨量为0.5%(质量分数),热处理温度为500℃,所合成的一维镨掺杂纳米TiO2光催化效果最优。另Pr3+掺杂使纳米TiO2提高了对可见光的吸收能力,并使其吸光域红移约50 nm。Pr- doped TiO2 nannometer materials was successfully synthesized by the hydrothermal method using titanium and Pr（ N03）3 as precursors. The crystal structure and photo absorption properties of the samples were investigated by the techniques of X - ray diffraction （XRD） , SEM, Raman spectroscopy and Ultraviolet - visible reflectance spectroscopy （ UV - Vis DRS）. The results showed that the synthesis conditions had great effects on the morphology and catalytic performance of the materials, and the best one was determined as hydrothermal temperature 150 ℃ for 12 h, content of Pr 0.5% and calcination temperature 600 ℃. The visible light absorption properties of samples doped with Pr3＋ are obviously enhanced, with absorption limits bathochromic shift 50 nm.

关 键 词：水热合成 Pr/TiO2 光催化 

分 类 号：O643[理学—物理化学]