Zhang, Yakun Self-assembly of sponge-like kaolin/chitosan/reduced graphene oxide composite hydrogels for adsorption of Cr(VI) and AYR. [electronic resource] - Environmental science and pollution research international Oct 2019 - 28898-28908 p. digital Publication Type: Journal Article ISSN: 1614-7499 Standard No.: 10.1007/s11356-019-06068-z doi Subjects--Topical Terms: AdsorptionAzo Compounds--chemistryChitosan--chemistryChromium--chemistryGraphite--chemistryHydrogels--chemistryKaolin--chemistryOsmolar ConcentrationOxides--chemistryPhotoelectron SpectroscopySpectroscopy, Fourier Transform InfraredTemperature