Synthesis of mixed-ligand Cu-MOFs and their adsorption of malachite green

被引：52
作者：
Shi, Zhennan [1 ,2 ]
Li, Ling [1 ,2 ,3 ]
Xiao, Yuxiang [1 ,2 ]
Wang, Yingxi [1 ,2 ,3 ]
Sun, Keke [1 ,2 ]
Wang, Hangxing [1 ,2 ]
Liu, Li [1 ,2 ,3 ]
机构：
[1] Hubei Univ, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Wuhan 430062, Peoples R China
[2] Hubei Univ, Ministry Of Educ, Key Lab Synth & Applicat Organ Funct Mol, Xueyuan Rd 11, Wuhan 430062, Hubei Province, Peoples R China
[3] Hubei Univ, Key Lab Green Preparat & Applicat Mat, Minist Educ, Wuhan 430062, Peoples R China
来源：
RSC ADVANCES | 2017年 / 7卷 / 49期
基金：
中国国家自然科学基金;
关键词：
METAL-ORGANIC FRAMEWORKS; WASTE-WATER; AQUEOUS-SOLUTION; ISOTHERMS; REMOVAL; DYE; EQUILIBRIUM; KINETICS; DESIGN;
D O I：
10.1039/c7ra04820c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Different mixed-ligand MOFs with various ratios of Cu2+ and ligands (MOFs-1, MOFs-2, MOFs-3 and MOFs-4) were synthesized and characterized. The mixed-ligand MOFs-2 was the optimal adsorbent, as confirmed by studying the adsorption of malachite green (MG); the adsorption capacity of MOFs-2 for MG was calculated to be 185.4 mg g(-1). Based on a combination of surface and pore structure analysis, it was concluded that size match is more important than surface area for adsorption. Adsorption isotherms were acquired, and the results showed that the adsorption is a physical process that obeys the Freundlich model. The adsorption mechanisms were tested, and the results showed that the adsorption has pseudo-first-order kinetics. MOFs-2 was proven to be stable in water and suitable to be recycled for waste water treatments.
引用
收藏
页码：30904 / 30910
页数：7
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