卤氧化铋化合物光催化剂  

Bismuth Oxyhalide Compounds as Photocatalysts

作　　者：魏平玉[1] 杨青林[1] 郭林[1] 

机构地区：[1]北京航空航天大学化学与环境学院,北京100191

出　　处：《化学进展》2009年第9期1734-1741,共8页Progress in Chemistry

摘　　要：卤氧化铋BiOX(X=Cl,Br,I)作为一种新型光催化剂,由于具有特殊的层状结构和合适的禁带宽度从而显示出优异的光催化性能。本文主要对微纳米卤氧化铋光催化剂的制备方法、形貌尺寸及光催化性能进行了综述。卤氧化铋的光催化活性普遍优于商品TiO2(P25)的光催化活性,并且随着卤素原子序数的增加光催化活性逐渐增强。此外,卤氧化铋光催化剂还具有很高的稳定性。借助于掺杂改性,卤氧化铋的光催化性能得到进一步改善;通过晶体结构和能带结构的设计合成可以得到高活性的卤氧化铋化合物光催化剂。最后,对卤氧化铋光催化剂今后的研究方向进行了展望。Bismuth oxyhalide compounds, BiOX （X = Cl, Br, I） are new types of photoeatalysts. They exhibit excellent photocatalytic properties due to layered crystal structure and suitable band gaps. In this paper, main preparation methods, morphologies, sizes and photocatalytic activities of miero-nanometer bismuth oxyhalides are reviewed. Bismuth oxyhalide compounds show better photocatalytic activities than TiO2 （ P25）. With the increasing of X atomic numbers, photocatalytie activities of BiOX are enhanced in sequence. Moreover, the stabilities of BiOX are high. Photocatalytic activities of bismuth oxyhalide compounds are improved by doping and modifications. By designing of the crystal structures and energy band gaps, highly efficient photocatalysts of bismuth oxyhalide compounds can be obtained. At last, the trend of research is prospected.

关 键 词：卤氧化铋 光催化剂 制备 光催化活性 

分 类 号：O643.36[理学—物理化学] O614.532[理学—化学]