A method for making a metal-organic framework, MOF, as nanosheets, includes providing a MXene, wherein the MXene has a general formula of M_n+1X_nT_x, with n=1-3, M represents an early transition metal, X is C and/or N, and Tx is surface terminations; providing a ligand; mixing the MXene and the ligand in a vessel; heating the MXene and the ligand in the vessel; and forming the MX-MOF nanosheets. The MX-MOF nanosheets have a thickness less than 10 nm.