Multivariable Sieving and Hierarchical Recognition for Organic Toxics in Nonhomogeneous Channel of MOFs

Abstract

Multivariable sieving is realized on the basis of a series of isostructural metalorganic frameworks, MIL-140s [ZrO(O 2 C-R-CO 2)], with triangular hydrophobic channels. MIL-140s enable multivariable sieving of dyes and practical toxics, such as high carcinogenic pesticides and persistent organic pollutants. The sieving mechanisms are revealed through presenting an outside-in theoretical model, hierarchical recognition, by the regulation of surface charge, pore size, and potential energy surface of MIL-140s.

An Anionic Metal‐organic Framework for Selective Adsorption Separation toward Methylene Blue and Rhodamine B

“…[1][2][3] Compared to the traditional processing methods, which include catalytic degradation technology, [4] biomass method, [5,6] electrochemical method, [7] chemical precipitation, [8] membrane technology, [9,10] etc, the adsorption and separation techniques based on porous materials are regarded to be one of the promising approaches because of their simple method, low cost and effective energy and easy to recycle. [11][12][13][14][15][16][17] However realization of high efficiently porous materials is a huge challenge now due to low adsorption efficiency and poor selectivity of common organic pollutant adsorption materials such as activated carbon and zeolite. Metal-organic frameworks (MOFs) materials, which are organic-inorganic hybrid materials formed by selfassembly of organic ligands and metal ions/clusters by coordination bonds, have a series of advantages such as large specific surface area, diverse crystal structure, adjustable pore size and extremely strong designability of chemical environment on the pore surface.…”

Two –COOH Decorated Anionic Metal‐organic Frameworks with Open Cu2+ Sites Afforded Highly C2H2/CO2 and C2H2/CH4 Separation and Removal of Organic Dyes

“…In addition, the negative effects on clean water sources caused by environmental contamination through the excessive discharge of organic pollutants, have attracted more and more attention. So it is particularly important to completely remove the pollutants in the water before discharge . In the field of acetylene and water purification, adsorbent materials (such as activated carbon, zeolite) are widely used because of their simple method and low cost.…”

Nanotrap Grafted Anion Exchangeable Hybrid Materials for Efficient Removal of Toxic Oxoanions from Water

“…Currently, the sorption-based removal technique has gained an escalating interest and is considered advantageous over other conventional techniques due to its cost-effectiveness, ease of operation, and generation of less harmful secondary species. 5 , 6 Nevertheless, the limited affinities in the presence of excess of interfering salts, slow kinetics, and poor capturing efficiency toward a trace amount of pollutants has actuated researchers toward the development of new sorbent materials for efficient decontamination of toxic oxoanions from contaminated natural groundwater. 3 , 4 Althogh , in the past few years, rational design strategies have yielded several materials for specific sequestration of individual oxoanions.…”