噻吩醛缩乙二胺席夫碱及其配合物的合成与光催化性能  

Synthesis and Photocatalysis of Metal Complexes with Schiff Base Derived from 2-Thiophene Carboxaldehyde and Ethylenediamine

作　　者：黑嘉慧 杨莉宁[2] 李珺[3] HEI Jiahui;YANG Lining;LI Jun(Aerospace Technology School,Xi′an 710100,China;Department of Pharmacy,Medical University of Xi′an,Xi′an 710021,China;College of Chemistry&Matericals Science,Northwest University,Xi′an 710069,China)

机构地区：[1]西安航天技工学校,西安710100 [2]西安医学院药学院,西安710021 [3]西北大学化学与材料科学学院,西安710069

出　　处：《应用化学》2019年第8期949-957,共9页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(21671158)项目资助~~

摘　　要：基于TiO2光催化性能的染料敏化改性,采用2-噻吩甲醛缩合乙二胺合成了席夫碱配体L,并与金属配合得到了金属配合物[ZnLCl2](1),[NiL′(NO3)2](2)(L′为单噻吩醛缩乙二胺),对配体L、配合物1和2进行了X射线单晶衍射结构分析。用合成的配体和配合物修饰TiO2得到相应的复合光催化剂L-TiO2、1-TiO2和2-TiO2,并进行了红外光谱、紫外-可见漫反射光谱、粉末X射线衍射图谱等表征,研究了这3种光催化剂降解水中有机污染物4-硝基酚(4-NP)和罗丹明B(RhB)的催化活性。结果表明,1-TiO2、2-TiO2可以有效的降解4-NP和RhB,降解率可达90%以上。The ligand N,N′-bis(thiophenaldehyde)ethylenediamine(L)obtained by the condensation between 2-thiophene carboxaldehyde and ethylenediamine were used for synthesis of new complexes[ZnLCl2](1)and[NiL′(NO3)2](2)(L′-thiophenaldehyde-ethylenediamine).The structures of these complexes and ligand were characterized by single crystal X-ray analysis.These compounds were used for modifying the surface of TiO2.The obtained photocatalysts(L-TiO2,1-TiO2,2-TiO2)were characterized by IR spectra,UV-Vis diffuse reflectance spectroscopy and XRD.Their photocatalytic activities in the photodegradation of 4-nitrophenol(4-NP)and Rhodamine B(RhB)were evaluated under UV-visible light irradiation.The results revealed higher photocatalytic activities of 1-TiO2 and 2-TiO2 than that of bare TiO2.In addition,the degradation rate can reach above 90%.

关 键 词：2-噻吩甲醛 席夫碱 金属配合物 二氧化钛 光催化降解 

分 类 号：O643.3[理学—物理化学]