水热法制备纳米Mn(Ⅱ)/TiO_2粉体及其日光催化活性的研究  

Nano Mn(Ⅱ)/TiO_2 Powder Prepared by Hydrothermal Method and Its Photocatalytic Activity Under Sunlight

作　　者：马琦[1] 张保柱[1] 张志强[1] 任建国[1] 张智敏[1] 

机构地区：[1]山西大学化学化工学院,山西太原030006

出　　处：《石油化工》2005年第4期384-387,共4页Petrochemical Technology

基　　金：山西省自然科学基金资助项目(20041016)。

摘　　要：采用水热法,在温和的条件下制备了具有较高光催化活性的Mn(Ⅱ)/TiO2光催化剂,采用X射线粉末衍射、扫描电镜、紫外可见漫反射手段对其进行了表征。在太阳光照射下,以罗丹明B溶液的降解为模型反应,研究了光催化剂的催化活性。研究结果表明,TiO2晶型为单一的锐钛矿相,光响应波长由纯TiO2的380nm拓宽到400nm以上,达到可见光区范围,新型改性的Mn(Ⅱ)/TiO光催化剂的日光催化活性比较高。A new type of nano Mn(Ⅱ)/TiO_2 photocatalyst with high photocatalytic activity was prepared by hydrothermal method under mild condition and characterized by means of XRD,SEM and UV-Vis.Its photocatalytic activity was evaluated by degradation of Rhodamine B solution under sunlight. TiO_2 crystal was in anatase phase.Light response region of Mn(Ⅱ)/TiO_2 sample was shifted from 380 nm of pure TiO_2 to over 400 nm in visible light region.Mn(Ⅱ) /TiO_2 was higher in photocatalytic activity than pure TiO_2.

关 键 词：水热法 二氧化钛 光催化 可见光 

分 类 号：O643.36[理学—物理化学]