ZIF-8的制备及其光催化降解活性红研究  

Fabrication of ZIF-8 and its photocatalytic degradation of reactive red

作　　者：穆寄林 徐婕 赵瑨云 胡家朋 林皓 付兴平 刘瑞来 Mu Jilin;Xu Jie;Zhao Jinyun;Hu Jiapeng;Lin Hao;Fu Xingping;Liu Ruilai(Fujian Provincial Key laboratory of Eco-Industrial Green Technology,College of Ecological and Resources Engineering,Wuyi University,Wuyishan 354300)

机构地区：[1]福建省生态产业绿色技术重点实验室,武夷学院生态与资源工程学院,武夷山354300

出　　处：《化工新型材料》2022年第8期219-222,共4页New Chemical Materials

基　　金：国家自然科学基金(51406141);福建省自然科学基金(2019J01829、2019J01830、2020J01412、2020J01414);南平市基金(2019J06)。

摘　　要：类沸石咪唑酯骨架材料(ZIFs)是由过渡金属原子(Co/Zn)与咪唑或咪唑衍生物连接而成的一类新型、具有拓扑的纳米多孔材料,是金属有机骨架材料的一种。而ZIF-8是ZIFs材料中最具代表性的一种。本实验采用醇热法制备ZIF-8,研究Co∶Zn摩尔比、活性红初始浓度等条件对光催化活性的影响,利用红外光谱、扫描电镜和X-射线粉末衍射表征ZIF-8的形貌和结构性能。光催化实验表明,当n(Co∶Zn)=2∶3时,ZIF-8对活性红的降解率达到最大值,为95.10%。采用一级动力学方程拟合ZIF-8对活性红的降解动力学过程,拟合因子(R^(2))均大于0.97,说明一级动力学方程适合于ZIF-8对活性红的光催化降解动力学反应。Zeolitic imidazolate framworks(ZIFs) are new subclass of metal-organic frameworks(MOFs) comprised of ordered networks which are formed by imidazole or imidazole derivatives and inorganic transition metal cations(Co/Zn).The ZIF-8 framework is one of the most representative ZIFs materials.In this experiment, ZIF-8 was prepared by alcohol-thermal method, and investigated the effect of the molar ration of Co∶Zn, initial concentration of reactive red on the photocatalytic activity of ZIF-8.The structure and morphology of ZIF-8 were characterized by infrared spectroscopy, scanning electron microscopy and X-rad power diffraction.The photocatalytic experimental results showed that the degradation rate of the reactive red for ZIF-8 reached a maximum of 95.10%,when n(Co∶Zn)=2∶3.The first-order kinetic equation was used to fit the degradation kinetics of the reactive red with the fitting factor R^(2) all greater than 0.97,indicating that the first-order kinetic equation was suitable for the photocatalytic degradation kinetic reaction of the reactive red for ZIF-8.

关 键 词：金属有机骨架材料 ZIF-8 活性红 光催化 降解 

分 类 号：X5[环境科学与工程—环境工程]