基于立方八面体二级结构单元的新型三维金属有机框架的光催化和铁离子传感特性

Photocatalytic and Ferric Ion Sensing Properties of a New Three-Dimensional Metal-Organic Framework Based on Cuboctahedral Secondary Building Units.

作者信息

Ding Qiongjie, Pan Ying, Luo Yingmei, Zhou Mi, Guan Yucheng, Li Baohong, Trivedi Manoj, Kumar Abhinav, Liu Jianqiang

机构信息

Guangdong Key Laboratory for Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Dongguan 523808, P. R. China.

State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.

出版信息

ACS Omega. 2019 Jun 20;4(6):10775-10783. doi: 10.1021/acsomega.9b01008. eCollection 2019 Jun 30.

A new three-dimensional microporous metal-organic framework based on Zn(II) clusters with the formula {[Zn(NDC)(μ-OH)]·7DMF} () (HNDC = 1,4-naphthalenedicarboxylic acid) had been synthesized and characterized. The MOF displays an uncommon bsn topology, which is based on a unique heptanuclear Zn(OH)(CO) cluster as a secondary building unit. The MOF had been employed as a photocatalyst for the photodegradation of model organic dyes rhodamine B and methyl violet in light. The results of photocatalytic experiments showed that can successfully be employed as the photocatalyst for the benign decomposition of these dyes. A mechanism for the photcatalysis exhibited by had been proposed using the results of density of states (DOS) and partial DOS calculations. The fluorescence properties of the MOF have been investigated, which revealed that could be exploited as the luminescent sensor to recognize Fe ions with perceptible quenching ( = 6.55 × 10 M-) and a limit of detection of 1.16 ppm.

一种基于锌（II）簇的新型三维微孔金属有机框架，其化学式为{[Zn(NDC)(μ-OH)]·7DMF} （）（HNDC = 1,4-萘二甲酸）已被合成并表征。该金属有机框架呈现出一种罕见的bsn拓扑结构，它基于一个独特的七核Zn(OH)(CO)簇作为二级结构单元。该金属有机框架已被用作光催化剂，用于在光照下对模型有机染料罗丹明B和甲基紫进行光降解。光催化实验结果表明，它可以成功地用作这些染料良性分解的光催化剂。利用态密度（DOS）和部分态密度计算结果，提出了该金属有机框架表现出的光催化机理。对该金属有机框架的荧光性质进行了研究，结果表明它可以作为发光传感器来识别铁离子，具有明显的猝灭效果（= 6.55 × 10 M-），检测限为1.16 ppm。