【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。更多还原

【Abstract】 A new type of nano Mn（Ⅱ）/TiO₂ 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. TiO₂ crystal was in anatase phase.Light response region of Mn（Ⅱ）/TiO₂ sample was shifted from 380 nm of pure TiO₂ to over 400 nm in visible light region.Mn（Ⅱ） /TiO₂ was higher in photocatalytic activity than pure TiO₂.更多还原