铀酰羧酸配合物的合成、晶体结构及光催化活性  

Synthesis,Crystal Structure and Photocatalytic Activity of Uranyl Carboxylate

作　　者：段诗博[1] 石鑫[1] 侯亚男[1] 邢永恒[1] 

机构地区：[1]辽宁师范大学化学化工学院,辽宁大连116029

出　　处：《北华大学学报（自然科学版）》2013年第3期287-293,共7页Journal of Beihua University（Natural Science）

基　　金：国家自然科学基金项目(21071071)

摘　　要：以醋酸双氧铀为金属源,选择2,6-吡啶二羧酸(2,6-H2pdc)作为配体合成了铀酰羧酸配合物[UO2(2,6-pdc)H2O].NH(CH3)2.1.5H2O,并通过单晶X-射线衍射确定了该配合物的结构.X-射线单晶衍射结果表明:在该配合物结构中具有光催化活性的铀酰几乎垂直于金属铀和2,6-pdc配体形成的配位平面,这种结构使得铀酰在进行光催化反应时不存在任何空间位阻,因此,该配合物作为固体光催化剂在降解罗丹明B(RhB)染料中表现出比商品化TiO2(P-25)更高的光催化活性.A new uranyl carboxylate complex,·NH（CH3）2·1.5H2O was synthesized from metal source of uranyl acetate and 2,6-pyridine dicarboxylic acid（2,6-H2pdc）.The X-ray single crystal diffraction was conducted to determine the crystal structure of uranyl carboxylate,which indicated that uranyl with photocatalytic activity is almost perpendicular to the coordination plane formed by uranium of center metal and 2,6-pdc ligand.The specific structure of uranyl carboxylate cause the uranyl to avoid steric hindrance in the photocatalysis,which resulted in uranyl carboxylate as solid photocatalyst exhibiting higher photocatalytic activity than commercial TiO2（P-25） in photodegradation of Rhodamine B（RhB） dye.

关 键 词：铀酰配合物 2 6-吡啶二羧酸 合成 晶体结构 光催化活性 

分 类 号：O641[理学—物理化学]