首页|MOF-5的原位电化学合成及其在提高BiOBr光催化活性方面的应用

MOF-5的原位电化学合成及其在提高BiOBr光催化活性方面的应用

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金属有机骨架材料(MOFs)是一种重要的功能材料,通过原位电化学合成方法在离子液体1-丁基-3-甲基咪唑氯盐作为模板剂的条件下合成MOF-5(IL)(Zn4O(BDC)(BDC=1,4-苯二甲酸).π-π堆叠作用、离子键和配位键的相互作用使得MOF-5(IL)形成球状结晶.分析结果表明:通过电化学法在离子液体中合成的MOF-5(IL)比传统溶剂热法合成的MOF-5表现出更好的结晶性和更高的热稳定性.循环伏安曲线显示该电化学合成反应是一个扩散控制的不可逆过程.对甲基橙的降解实验表明,MOF-5(IL)独特的结构特征可以提高BiOBr的光催化活性.因此,MOFs材料可以取代贵金属来提高卤氧铋的光催化性能.
In situ electrochemical synthesis of MOF-5 and its application in improving photocatalytic activity of BiOBr
Metal organic frameworks (MOFs) are important functional materials.MOF-5 (IL) (Zn4O(BDC)3 (BDC=l,4-benzenedicarboxylate) was in situ synthesized by the electrochemical method using a tunable ionic liquid (IL),1-butyl-3-methylimidazolium chloride,as template.The crystallization of distinctly spherical MOF-5 (IL) synthsized in ionic liquid by the electrochemical method is attributed to π-π stacking effect,ionic bond,and coordination bond.The analysis results show that the product MOF-5(IL) exhibits better crystallinity and higher thermal stability than MOF-5 generated using the solvothermal method.The cyclic voltammetry reveals that the electrosynthesis reaction is irreversible and controlled by the diffusion.The experiments on methylorange degradation show that the unique structure characteristics of MOF-5(IL) can enhance the photocatalytic ability of BiOBr.Therefore,MOFs can replace noble metals to improve the photocatalytic properties of bismuth oxyhalide.

metal-organic framewok (MOF)ionic liquids template agentin situ electrochemical synthesisBiOBrphotocatalytic

杨慧敏、刘宪、宋秀丽、杨太来、梁镇海、樊彩梅

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太原理工大学化学化工学院,太原030024

MOF-5 离子液体模板剂 原位电化学合成 BiOBr 光催化

supported by the National Natural Science Foundation of China and Shenhua Group Corp

U1261103

2015

10.1016/S1003-6326(15)64047-X

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCDCSCDSCIEI
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2015.25(12)
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