Adsorption performance of Prussian blue supported graphitic carbon nitride composite (Prussian blue/g-C3N4) for the removal of U(VI) from aqueous solutions

Abstract

A simple strategy is presented for the preparation of Prussian blue-modified g-C₃N₄. PB/g-C₃N₄ is synthesized as an efficient adsorbent for the adsorption of U (VI), and the effects of various conditions on the adsorption of U (VI) are investigated. Static adsorption experiments reveal that the adsorption of U (VI) by PB/g-C₃N₄ conforms to the Langmuir adsorption isotherm and pseudo-second-order adsorption model. The composition and morphology of the materials are characterized by XRD, FT-IR, XPS, SEM, and BET. This study demonstrates that PB/g-C₃N₄ is a promising material for uranium-containing wastewater treatment, with the advantages of low cost, environmental friendliness, and facile synthesis.