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.
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)
出处
《化工新型材料》
CAS
CSCD
北大核心
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)。
关键词
金属有机骨架材料
ZIF-8
活性红
光催化
降解
metal organic framework
zeolitic imidazolate frameworks-8
reactive red
photocatalysis
degradation
作者简介
穆寄林(1968-),男,硕士研究生,主要研究方向为环境水处理研究,E-mail:mujilin@163.com;通讯作者:胡家朋,博士,教授,主要研究方向为环境功能材料制备及其研究,E-mail:22402414@qq.com。
