Larger pore volume tetraphenyladamantane‐based hybrid porous polymers: Facile Friedel–Crafts preparation, CO₂ capture, and Rhodamine B removal properties

Abstract

Synthesis of covalently linked porous polymers with high surface area and larger pore volume for two or more task-specific functionalities is always a big challenge. In this article, the facile Friedel-Crafts reaction is employed to construct the hierarchical hybrid porous polymers (HPPs) from tetraphenyladamantane and octavinylsilsesquioxane. The resulting polymers, HPP-1 to HPP-3, possessed the surface areas from 1356 to 1511 m 2 g −1 , and the pore volumes from 2.05 to 2.67 cm 3 g −1 . All these polymers feature micropores, mesopores, and macropores in nature. The resultant polymers exhibit high CO 2 adsorption capacity up to 2.0 mmol g −1 (8.82 wt %), at 273 K, 1.0 bar, and the maximum Rhodamine B (RB) sorption capacity of 653.6 mg g −1 . To illustrate the adsorption process, the effects of factors, contact time, initial concentration, temperature, and pH value on the adsorption capacity of RB were studied. The adsorption equilibrium data displayed a better fitting to the Langmuir isotherm model than the Freundlich model and the adsorption kinetics fitted well with the pseudo-second-order kinetic model. The recycle experiments displayed that the capacity recovery was still higher than 95% after four cycles. Theses polymers are promising to be the adsorbents for capturing CO 2 and removing RB.

Au Nanoparticles in Silsesquioxane-Based Hybrid Networks by Simultaneous Recovery and Reduction of Au(III) in Wastewater

“…Cubic silsesquioxanes (SQs) are ideal precursors for the preparation of functional hybrid materials considering stable inorganic silica-like core and versatile peripheral substituents. , The functional substituents on the silica-like core enable SQs to prepare hybrid materials through various chemical routes such as Heck coupling, , Friedel–Crafts, − radical polymerization, cationic polymerization, and nucleophilic substitution . Some SQ-based hybrid materials are applied as adsorbents to remove organic dyes and heavy metal ions with high adsorption capacity.…”

A triptycene derived hypercrosslinked polymer for gas capture and separation applications

“…Synthetically, HCPs are quite versatile since aromatic molecules decorated with various functional groups can be used for synthesis of these porous materials. The HCPs feature high surface areas and physiochemical stabilities making them desirable and strategic materials for various applications such as capture and storage of small gas molecules 6,7 and efficient adsorbents for removal of toxic molecules such as volatile organic compounds (VOCs), 8 industrial dyes 9,10 and other environment pollutants such as heavy metal ions 11 . The usefulness of HCPs for the above‐mentioned applications stems from the fact that these polymers feature micropores as well as mesopores.…”