In this work, MnO2 [email protected] graphene oxide hydrogel (MNGH) was prepared via one-step hydrothermal co-assembly approach. The as-prepared MNGH exhibited three-dimensional (3D) architecture with a high surface area of 156 m2 g−1. By characterization of the morphology of MNGH, MnO2 nanotubes with uniform size (∼20 nm) were wrapped by interconnected porous reduced graphene oxide (rGO) sheets. Benefiting from the 3D porous nanostructure as well as the synergetic action between rGO and MNTs, the MNGH sample showed decent adsorption ability ...
