Facile Synthesis of a Pentiptycene-Based Highly Microporous Organic Polymer for Gas Storage and Water Treatment

Abstract

Rigid H-shaped pentiptycene units, with an intrinsic hierarchical structure, were employed to fabricate a highly microporous organic polymer sorbent via Friedel-Crafts reaction/polymerization. The obtained microporous polymer exhibits good thermal stability, a high Brunauer-Emmett-Teller surface area of 1604 m g, outstanding CO, H, and CH storage capacities, as well as good adsorption selectivities for the separation of CO/N and CO/CH gas pairs. The CO uptake values reached as high as 5.00 mmol g (1.0 bar and 273 K), which, along with high adsorption selectivity values (e.g., 47.1 for CO/N), make the pentiptycene-based microporous organic polymer (PMOP) a promising sorbent material for carbon capture from flue gas and natural gas purification. Moreover, the PMOP material displayed superior absorption capacities for organic solvents and dyes. For example, the maximum adsorption capacities for methylene blue and Congo red were 394 and 932 mg g, respectively, promoting the potential of the PMOP as an excellent sorbent for environmental remediation and water treatment.

Hectogram-scale green synthesis of hierarchical 4A zeolite@CuOx(OH)(2−2x) (0 ≤ x < 1) nanosheet assemblies core–shell nanoarchitectures with Superb Congo red adsorption performance

“…10,31 Adsorption is usually used as an appealing approach for CR removal. [32][33][34] Fig. 5a manifested a pre-experiment result of 0.2 g 4A-Cu with 100 ml 300 mg L À1 CR aqueous solution.…”

Recent developments and consideration issues in solid adsorbents for CO2 capture from flue gas

“…Because of their excellent physical and chemical stability, high surface area, and easy functionality, COFs have a promising prospect in CO 2 capture [123]. There are several organic reactions for constructing COFs, including the formation of B\ \O (boronate, boroxine and borosilicate), C_N (imine, hydrazine, and squaraine), C\ \N (triazine and imidization), B\ \N (borazine) and N\ \N (azodioxides) bond linkages [124,125]. Several organic reactions are shown in Fig.…”

Emissive Organogel Mediated Construction of Hydrazide Linked Flexible Covalent Organic Polymer for the Separation of Aniline for Water Purification

“…[25][26] A wide range of methods and technologies have been developed to remove aniline. [27][28][29][30] On the other hand, several type of nitrogen atom containing recyclable green switchable solvents are widely used for the extraction or separation of organic solvents. [31][32][33][34][35][36][37] However, most of the switchable solvents are amines that separate the desire product from the solvent mixtures through a phase transition process.…”

“…[41] Therefore, it is necessary to develop a convenient method and material with lower equipment costs for the separation of organic solvents. In this regard, adsorption using solid adsorbent is a quick and easy method, [27][28][29][30] and nitrogen functionalized COP can be the innovative solid adsorbent material with high adsorption capacity and selectivity for the organic solvent separation. The adsorption technique is demonstrated to be enhanced with a better adsorption capacity and selectivity due to the possible H-bonding, electrostatic and acid-base interaction between the surface functional groups on the COPs and adsorbates.…”