硝酸辅助的六方相MoO_3的制备及其光催化性质  

SYNTHESIS VIA A HNO_3 ASSISTED AND PHOTOCATALYTIC PROPERTY OF HEXAGONAL MOLYBDENUM TRIOXIDE

作　　者：宋继梅[1] 梅雪峰[1] 王红[1] 高菲[1] 赵绍娟[1] 胡海琴[1] 

机构地区：[1]安徽大学化学化工学院,安徽合肥230039

出　　处：《中国钼业》2011年第5期23-27,共5页China Molybdenum Industry

基　　金：安徽省自然科学基金(11040606M55);安徽省教育厅自然科学基金(KJ2010A015)资助;安徽大学人才队伍建设;安徽省高等学校"十五"优秀人才建设经费资助

摘　　要：采用硝酸辅助的低温水热法成功制备了六方相三氧化钼,利用XRD,FT-IR,SEM,TG等手段对产物进行了表征。通过固体紫外-可见光谱测量了合成样品的带隙能。六方相三氧化钼在350℃下焙烧,发生不可逆相变,转变为正交相三氧化钼。以合成产物为光催化剂,研究了其对阴离子染料亚甲基蓝的降解性能,六方相和正交相三氧化钼对亚甲基蓝的降解率分别为94.6%和81.2%,六方相的光催化效果明显优于正交相。Hexagonal phase MoO3 has been synthesized by hydrothermal method via a HNO3 Assisted at low temperature.The as-synthesized products were characterized by XRD,SEM,FI-TR and TG.UV-Vis spectral was used to measure band gap of the as-synthesized products.After calcined at 350 ℃,hexagonal MoO3 was changed to orthorhombic MoO3.The photocatalytic activity was evaluated by monitoring the degradation of methylene blue dye.The decolorization rates of methylene blue reached 94.6% and 81.2% for hexagonal and orthorhombic MoO3,respectively.The result showed the photocatalytic activity of hexagonal MoO3 was higher than orthorhombic MoO3.

关 键 词：三氧化钼 光催化 物相 

分 类 号：O614.612[理学—无机化学]