Hybrid porous polymers based on double‐decker and cage‐ype silsesquioxanes for the high‐efficiency removal of neonicotinoid insecticides and dyes

Abstract

Different ratios of octavinylsilsesquioxane (OVS) reacted with phenyl‐substituted double‐decker silsesquioxane (Ph‐DDSQ) via the simple Friedel‐Crafts reaction provides several innovative silsesquioxane‐based porous polymers (PCS‐ODs). The hybrid polymers show adjustable porosity (specific surface areas of 1235 m2 g−1 and large pore volumes >1.07 cm3 g−1). FTIR, SEM, BET, TGA, solid‐state 13C and 29Si MAS NMR spectra were employed to fully characterize these hybrid materials. They display good adsorption capacities for neonicotinoid insecticides (imidacloprid [IMI], acetamidine [ACE] and thiamethoxam [THI]), with capacities up to 117 ± 2, 70 ± 1 and 61 ± 4 mg g−1, respectively. Dyes (Congo red [CR] and rhodamine B [RB]) can also be sufficiently removed, the adsorption capacities are 1822 ± 4 and 912 ± 3 mg g−1. In addition, PCS‐ODs can be cycled at least five times.