Solvent-Dependent Synthesis of Porous Anionic Uranyl-Organic Frameworks Featuring a Highly Symmetrical (3,4)-Connected ctn or bor Topology for Selective Dye Adsorption.
Two highly symmetrical (3,4)-connected uranyl-organic frameworks (UOFs) were synthesized by a judicious combination of D3h-symmetrical triangular [UO2(COO)3]-and Tdsymmetrical tetrahedral tetrakis(4-carboxyphenyl)methane (H4MTB). These two as-synthesized UOFs possess similar structural units and coordination modes but totally different topological structures, namely ctn net and bor net. Solvent-induced interpenetration and a morphology change are observed. The two compounds exhibit crystal transformation via a dissolution-crystallization process. Adsorption experiments in CH3OH solution indicate that both of them can selectively remove positively charged dyes over negatively charged and neutral dyes. Moreover, the electronic structural and bonding properties of the two compounds were systematically explored by density functional theory (DFT) calculations.
Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P.R. China.
Kong-Qiu
0000-0002-8855-108X
KQ
Hu
Faculty of Material Science and Chemistry, Wuhan, 430074, P.R. China.
Xiang
X
Jiang
Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P.R. China.
Cong-Zhi
CZ
Wang
Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P.R. China.
Lei
L
Mei
Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P.R. China.
Zhen-Ni
ZN
Xie
Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P.R. China.
Wu-Qing
WQ
Tao
Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P.R. China.
Xiao-Lin
XL
Zhang
Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P.R. China.
Zhi-Fang
ZF
Chai
Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P.R. China.
Wei-Qun
0000-0001-9929-9732
WQ
Shi
interpenetrating structures; metal-organic frameworks; morphology change; selective dye adsorption; uranyl cation