Hypervalent silicon-based, anionic porous organic polymers with solid microsphere or hollow nanotube morphologies and exceptional capacity for selective adsorption of cationic dyes

Abstract

Two silicon-based anionic porous organic polymers with solid microsphere or hollow nanotube morphologies exhibited unprecedented capacity for selective adsorption of cationic dyes.

Recent advances on the removal of dyes from wastewater using various adsorbents: a critical review

“…It is considered to be a fast, low cost, simple, sludge-free process, having high efficiency and/or selectivity, mechanical stability, and recycling facilities. 14, [46][47][48][49][50][51] Adsorption process is widely used for the remediation of different pollutants from wastewater, including heavy metals, arsenic, and dyes. [52][53][54][55][56][57][58][59] Additionally, the pie-chart is displaying the percentage of literature available on dye removal for various adsorption techniques (Fig.…”

Cationic porous aromatic framework with hierarchical structure for selective, rapid and efficient removal of anionic dyes from water

“…Recently, on the basis of rational molecular design, various novel porous materials have been developed as advanced adsorbents for dyes and other kinds of pollutants removal, such as metal-organic frameworks (MOFs) [11][12][13], covalent organic frameworks (COFs) [14][15][16], porous organic polymers (POPs) [17][18][19] and porous aromatic frameworks (PAFs) [20][21][22][23][24][25][26]. It is known that high stability, proper porous structure and abundant functional groups are fundamental elements for effective adsorbents [27][28][29].…”

“…The precursor-designed method featured high loading and defined locating position of functional groups, facilitating the homogeneous distribution of functional groups in the PAFs [31,32]. As for dyes removal, adsorbents with charged moieties have improved adsorption capacities and selectivity [18,34,35]. So, functionalized PAFs with homogeneous distribution of charged moieties are promising adsorbents for dyes removal.…”

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

“…It is one of the most used chemical in dyeing cotton, paper, and silk and is not so hazardous compared to other organic dyes, MB could cause serious eye burns and lead to permanent injury. Although various POPs for adsorbing MB have been reported, the POPs with their maximum MB adsorption value over 2500 mg g −1 are rare 32–38. Specially, it is still challenging to develop practical POPs to remove MB from other pollutant with high selectivity, reusability, and efficient adsorption in aqueous solution 39–45…”