“…In previous works, graphene derivatives such as GO and rGO were used as adsorbents for removing the contaminations from water, particularly in organic pollutants . They have much higher adsorption capacities than those of graphite, activated carbon, layered double hydroxide, boron nitride, metal–organic frameworks, and polymer adsorbents due to their strong π–π stacking, anion–cation interactions, and oxygen-functional groups. − In this work, the 3D hierarchical porous structure and high pore volume also promote the Ag/CeO 2 /GA material highly efficient for organic pollutant adsorption. Under visible-light irradiation, the MB purification efficiency of Ag/CeO 2 /GA is shown in the Figure a, which is obtained according to the real-time absorption spectra of MB over the material (Figure b).…”