《Novel triazine-based cationic covalent organic polymers for highly efficient and selective removal of selenate from contaminated water》 was written by Lin, Wenxia; Wu, Pengcheng; Li, Rongfei; Li, Jihong; Cai, Yimin; Yuan, Lihua; Feng, Wen. HPLC of Formula: 17201-43-3This research focused ontriazine covalent organic framework selenate adsorption water purificaton; Adsorption; Contaminated water treatment; Covalent triazine framework; Selenium removal. The article conveys some information:
Selenium (Se) removal from contaminated water has become a major environmental problem in recent years. Designing efficient and selective materials for selenium adsorption is urgent and still represents a great challenge. Herein, two novel cationic covalent triazine frameworks (CTFS-Cl and CTFL-Cl) are developed for the first time and employed as a new class of Se adsorbents. The results from systematic adsorption experiments indicate that these materials can adsorb SeO2-4 in a wide range of pH values (2-11) with fast kinetics (5 min), outstanding adsorption capacity, and excellent selectivity over other competing anions. The maximum adsorption capacity achieved (149.3 mg/g by CTFS-Cl) constitutes one of the highest values among the organic polymeric materials. More importantly, after a single step adsorption, these materials can reduce the Se concentrations to lower than 10μg/L, the lowest drinking water standard in the world. The adsorption mechanism was probed by XPS technique, EDS anal., adsorption experiments, and DFT calculations, which reveals that anion exchange between Cl- and SeO2-4 is the main driving force for Se adsorption. Addnl., CTFS-Cl and CTFL-Cl perform well toward real contaminated river water sample with the residual Se being less than 8.49μg/L. This work demonstrates the excellent performance of CTFs-based materials with great application prospect for Se removal in contaminated water treatment. The results came from multiple reactions, including the reaction of 4-Cyanobenzyl bromide(cas: 17201-43-3HPLC of Formula: 17201-43-3)
4-Cyanobenzyl bromide(cas: 17201-43-3) can reacts with 2H-tetrazole in the presence of KOH to yield 4-[(2H-tetra-zol-2-yl)methyl]benzonitrile. And it may be used in the synthesis of ligands containing a chelating pyrazolyl-pyridine group with a pendant aromatic nitrile.HPLC of Formula: 17201-43-3
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts