利用氧化铜室温下水蒸气辅助老化法合成MOF-505  

Synthesis of MOF-505 by using copper oxide at room temperature under water vapor-assisted aging

作　　者：毛超超 王泽坤 邓茂君 文忠梁 左凯明 袁文兵[1] MAO Chaochao;WANG Zekun;DENG Maojun;WEN Zhongliang;ZUO Kaiming;YUAN Wenbing(Key Laboratory of Fine Chemicals of Hainan Province,Key Laboralory of Tropical Island Resources Advanced Materials,Ministry of Education,College of Chemical Engineering and Technology,Hainan Universily,Haikou 570228,Hainan,China)

机构地区：[1]海南大学化学工程与技术学院,海南省精细化工重点实验室,热带岛屿资源先进材料教育部重点实验室,海南海口570228

出　　处：《精细化工》2020年第4期715-719,共5页Fine Chemicals

基　　金：国家自然科学基金(21561009);海南大学青年基金(hdkyxj201715);海南省研究生创新科研课题(Hys2018-62)。

摘　　要：以氧化铜与3,3’,5,5’-联苯四甲酸为原料,室温下分别以水、乙醇和N,N-二甲基甲酰胺(DMF)为溶剂,利用预盐湿磨法对于反应原料的混合物进行预研磨处理,再在不同的蒸汽(水、甲醇、DMF)中熏蒸辅助老化(VAG),制得VAG-MOF-505。结果显示,常温下乙醇预盐湿磨后配合水蒸气熏蒸20h即可得到高结晶度的VAG-MOF-505。利用PXRD、FTIR、TGA、SEM、BET对其进行结构表征与孔结构分析。SEM与PXRD结果显示,VAG-MOF-505具有与溶剂热法合成产品相似的结晶度。VAG-MOF-505的BET比表面积达到1281 m^2/g,平均孔径为0.66 nm。该文为VAG法在MOFs的绿色大规模合成方面的应用提供了新的研究思路。A metal-organic frame-505(MOF-505) was obtained by pre-ion liquid-grinding method from copper oxide and 3,3’,5,5’-biphenyltetracarboxylic acid in water, ethanol and N,N-dimethyl formamide(DMF) at room temperature, respectively. Then, the MOF-505 was treated by vapor-assisted aging(VAG) in different solvent vapor(water, methanol, DMF) to obtain VAG-MOF-505. The results show that VAG-MOF-505 with high crystallinity can be obtained by pre-ion and liquid-assisted grinding with ethanol, at room temperature followed by aged in ethanol vapor for 20 h. PXRD, FTIR, TGA, SEM and BET were used to characterize the structure and analyze the pore structure. SEM and PXRD results reveal that VAG-MOF-505 has high crystallinity similar to that made by solvothermal method. Moreover, VAG-MOF-505 has a BET specific surface area of 1281 m^2/g, and an average pore diameter of 0.66 nm. This paper provides a new research idea for the application of VAG method in the green large-scale synthesis of MOFs.

关 键 词：金属有机框架 MOF-505 水蒸气辅助老化法 高结晶度 研磨 功能材料 

分 类 号：X781.5[环境科学与工程—环境工程]