An anionic In(III)-based metal-organic framework with Lewis basic sites for the selective adsorption and separation of organic cationic dyes

作者：Yang, Qi; Wang, Bin; Chen, Ya; Xie, Yabo^*; Li, Jianrong

来源：Chinese Chemical Letters, 2019, 30(1): 234-238.

DOI：10.1016/j.cclet.2018.03.023

• Anionic metal-organic framework
• Lewis basic sites
• Selective adsorption
• Separation
• Organic dye

In this paper, a new anionic metal-organic framework, [In(PBPTTBA)][(CH3)(2)NH2] (BUT-29) has been synthesized through the reaction of tetratopic acid ligand with double Lewis pyridine sites, 4,4',4 '',4'''-(4,4'-(1,4-phenylene)bis(pyridine-6,4,2-triyl)) tetrabenzoic acid (H(4)PBPTTBA) and In(NO3)(2) center dot 5H(2)O and fully characterized by single-crystal X-ray diffraction (SXRD), powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), infrared spectroscopy (IR), and elemental analysis (EA). BUT-29 can be used as an efficient adsorbent for the selective removal of organic cationic dyes in N,N'-dimethylformamide (DMF) solution. The adsorption capacities of BUT-29 toward methylene blue and crystal violet at 298 K can reach 1119 mg/g and 832 mgig, respectively. Moreover, the adsorbed dyes can be released in the DMF solution of LiNO3 gradually.

• 出版日期2019-1
• 单位北京工业大学