Novel optical composite material for efficient vanadium(III) capturing from wastewater

The high-efficient detection and recovery of vanadium (V(III)) using organic ligand embedded inorganic-organic mesoporous composite material (MeCM) was studied in this work. After 2‑methyl‑8‑quinolinol immobilization onto the porous silica, the MeCM was confirmed the high surface area, large pore diameters and ordered morphological homogeneity. The MeCM was exhibited fast and specific signal response to V(III) ion, and the color was observed by naked-eye based on the charge-transfer stable complexation mechanism. The MeCM was influenced by the solution pH and pH 3.50 was selected for the highest detection and adsorption ability. The limit of detection was 0.27 μg/L, which was remarkably low as defined. The MeCM was also exhibited comparatively high kinetic performances as the equilibrium adsorption was observer within short…