Carboxylic Acid Enriched Porous Organic Polymer as a Platform for Highly Efficient Removal of Methylene Blue from Aqueous Solution

Abstract

To develop highly efficient organic dyes adsorbents are of great importance for environmental issues. In this work, a negatively charged porous organic polymer (POP) is synthesized by simple aromatic nucleophilic substitution (SNAr) and hydrolysis reaction. This polymer POP‐TFP‐COOH structure is confirmed by IR and 13C cross‐polarization/magic‐angle‐spinning nuclear magnetic resonance. Due to the existence of phenyl rings and carboxylic acid groups, POP‐TFP‐COOH displays excellent adsorption ability for the positive dye methylene blue (MB), with a maximum value of 2740 mg g−1. This porous polymer can be reused at least four times without obvious loss of its adsorption capacity.

The Effect of Silver Nanoparticles/Titanium Dioxide in Poly(acrylic acid-co-acrylamide)-Modified, Deproteinized, Natural Rubber Composites on Dye Removal

“…These additional signals were consistent with the functional groups of polyacrylic acid and polyacrylamide, confirming the presence of PAA- co -PAM after modification. These additional functional groups could play an important role in capturing adsorbate molecules [ 35 ].…”

Designing 2D–2D g-C3N4/Ag:ZnIn2S4 nanocomposites for the high-performance conversion of sunlight energy into hydrogen fuel and the meaningful reduction of pollution

“…Methyl orange (MO), an anionic azo dye largely employed in the textile industry and as a pH indicator, was used as a substrate. Along with other dyestuff residues, MO is encountered in industrial effluents and its removal by adsorption 41,42 or photodegradation 43 is a persistent problem for wastewater remediation. In photodegradation experiments, each photocatalyst was, in turn, stirred in the MO solution for 1 h under dark conditions to reach the adsorption-desorption equilibrium between the photocatalyst and MO.…”

A facile synthesis of iodine-functionalized hypercrosslinked polymers

“…13 One important advantage of HCPs is their high porosity and high surface area, which allows high functional group incorporation on their surface. HCPs with various functional groups, such as sulfonic acid, 14 carboxylic acid, 15 amide, 16 hydroxyl group, 17 and amine 18 have been developed. In addition to neutral HCPs, ionic HCPs have been constructed for various applications.…”