Porous Ni/β-Ni(OH)2 superstructures: Rapid solvothermal synthesis, characterization, and electrochemical property

► Porous Ni/β-Ni(OH)2 superstructures were successfully prepared via a simple solvothermal route. ► The surfactant, CTAB, played an important role in the formation of Ni/β-Ni(OH)2 superstructures. ► The as-obtained porous Ni/β-Ni(OH)2 superstructures exhibited good electrochemical property. ► The product could be prepared to electrochemical sensors for the detection of some small molecules.