Dimethoxytriazine-Triazole Linked Mesoporous Silica Hybrid Sorbent for Cationic Dyes Adsorption

Organic dye has always been considered one of the most serious water pollutants. Therefore, the great significance nowadays is to synthesis effective adsorbent Materials for removal of these contaminants. Herein, we prepared successfully a novel sorbent based on dimethoxy-triazine/triazole groups functionalized via a 1,3-dipolar cycloaddition click reaction on mesoporous silica SBA-15. The resulting sample denoted DMT-Tr-SBA-15 was characterized by FTIR spectra, X-ray photoelectron spectroscopy (XPS), solid-state 13C NMR spectroscopy and nitrogen adsorption/desorption isotherm. The resulting hybrid silica material was evaluated as a sorbent for adsorption of four cationic dyes in aqueous media showed high adsorption efficiency and a fast removal rate. The adsorption properties were monitored versus time; the after 40 min and using a 40 mg/L of adsorbent was reached. The maximum adsorption capacity for methylene blue at room temperature and neutral pH was 4.59 mmol g-1. These results indicate the great potential of clickable mesoporous silica to diversify the active sites for adsorption, thus demonstrating a significant interest for environmental applications.