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4273683 
Journal Article 
Isostructural functionalization by -OH and -NH2: different contributions to CO2 adsorption 
Lu, Z; Xing, Yue; Du, L; He, H; Zhang, J; Hang, C 
2017 
1 
RSC Advances
EISSN: 2046-2069 
7 
75 
47219-47224 
English 
WOS:000412977000005 
Two isostructural mfj-type metal-organic frameworks, [Cu-2(ABDPB)(H2O)](n) (HHU-3, HHU for Hohai University; H(4)ABDPB for 5-amino-1,3-bis(3,5-dicarboxylphenyl)-benzene) and [Cu-2(OBDPB)(H2O)](n) (HHU-4; H4OBDPB for 5-hydroxyl-1,3-bis(3,5-dicarboxylphenyl)-benzene) were successfully synthesized by V-shaped tetracarboxylic ligand with amino and hydroxyl groups, respectively. Compared with the prototypical MOF, PCN-306, both MOFs exhibit obviouse decreases in BET surface area and pore volume, with the values of 2354 m(2) g(-1) and 0.920 cm(3) g(-1) for HHU-3, and 2353 m(2) g(-1) and 0.954 cm(3) g(-1) for HHU-4. Although both functional groups are believed to be effective in strengthen CO2 interactions with the framework, in this type of MOF, amino group works better due to its basic nature. Meanwhile, the decoration of amino groups grafted HHU-3 high CO2 adsorption capacity (25.6 wt% at 1 bar and 273 K) and high CO2 selectivity (S-CO2/N2 = 129).