摘要
以MIL-53(Fe)(以下简称MFe)为原料,通过热解制备了具有多孔结构的准金属-有机骨架(MOFs)MFe-T(T℃代表煅烧温度)光催化剂。在测试的催化剂中,MFe-250表现出最高的光降解性能,在90 min内降解99%亚甲基蓝(MB)。从光电流和电化学阻抗谱的结果来看,MFe-250的电子传输能力超过了MFe。此外,捕获实验表明,在光催化降解MB过程中,羟基自由基(·OH)是必不可少的中间体。此外,还提出了光催化过程的机理。
Quasi-metal-organic-frameworks(MOFs)derivative-based MFe-T(T℃stands for calcination temperature)photocatalysts with a porous structure were synthesized by the pyrolysis of MIL-53(Fe)(termed MFe hereafter).Among the tested catalysts,MFe-250 exhibited the highest photodegradation performance,degradation of 99%methylene blue(MB)within 90 min.From the photocurrent and electrochemical impedance spectroscopy results,the electronic transmission capability of MFe-250 exceeded that of MFe.Furthermore,trapping experiments revealed that while hydroxyl radicals(·OH)were essential intermediates in the photocatalytic degradation of MB.Additionally,a mechanism for the photocatalytic process was proposed.
作者
邹启超
马岩
池殿军
乔红斌
张珺影
陈倩
孙玉蝶
张建
张奎
刘胜军
ZOU Qi-Chao;MA Yan;CHI Dian-Jun;QIAO Hong-Bin;ZHANG Jun-Ying;CHEN Qian;SUN Yu-Die;ZHANG Jian;ZHANG Kui;LIU Sheng-Jun(School of Chemistry and Chemical Engineering,Anhui University of Technology,Ma′Anshan,Anhui 243032,China)
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2021年第12期2289-2297,共9页
Chinese Journal of Inorganic Chemistry
基金
安徽省自然科学基金(No.1908085QB75)
国家自然科学基金(No.62104003,21976002,22004003)资助。
关键词
金属有机框架
可见光
光降解
有机染料
metal-organic frameworks
visible light
photodegradation
organic dyes
