Novel lanthanide coordination polymers based on mixed N,O-donor ligands and their visible-light-driven photocatalytic performance

作     者：Jun Chen Weizhi Kou Shunsheng He Chenlan Lin Xin Wang Lianshe Fu Ting-Hai Yang Jun Chen;Weizhi Kou;Shunsheng He;Chenlan Lin;Xin Wang;Lianshe Fu;Ting-Hai Yang

作者机构：Jiangsu Laboratory of Precious Metals Processing Technology and ApplicationSchool of Chemistry&Environmental EngineeringJiangsu University of TechnologyChangzhou 213001China Department of PhysicsCICECO-Aveiro Institute of MaterialsUniversity of Aveiro3810-193AveiroPortugal 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2023年第41卷第1期

页      面：85-90页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：Project supported by the National Natural Science Foundation of China (51872140,51973173) the College Students Training Program of Innovation and Entrepreneurship of Jiangsu Province (2021114630082) postgraduate Research&Practice Innovation Program of Jiangsu Province (SJCX20_1027 and SJCX21_1328) the NSF for Universities in Jiangsu Province (18KJB150013)。 

主　　题：Lanthanides Coordination polymers Photocatalytic degradation Pyrazole carboxylic acid Rare earths 

摘      要：In the present work,we prepared three isostructural lanthanide(Ln) coordination polymers(CPs).namely [Ln(Hhpc)(phen)(NO_(3))](Ln=Gd(1),La(2),Y(3),H_(3)hpc=5-hydroxy-1 H-pyrazole-3-carboxyIic acid,phen=1,10-phenanthroline) by hydrothermal method.Their structures were characterized by single crystal X-ray diffraction,Fourier transform infrared spectrum,elemental analysis,powder X-ray diffraction and thermal gravimetric analysis.CPs 1-3 are isostrutural and exhibit two-dimensional(2 D)wavy layered structure constructed from inorganic chains,in which equivalent eight coordinated Ln^(3+) ions are linked through carboxylate groups.The three dimensional supramolecular structure is further formed by hydrogen bonding.The photocatalytic experiments show that CPs 2 and 3 exhibit good photocatalytic performances under visible light in degradation of methylene blue organic dye.The photocatalytic degradation efficiencies in 90 min are about 86.19% and 93.60% for CPs 2 and 3,respectively.The photocatalytic degradation mechanisms have been proposed through photoelectrochemical and trapping radical experiments.