“…29 Cao et al obtained owerlike MgO nanostructures via microwave assisted solvothermal method, which showed superb adsorption capacities for Pb(II) and Cd(II). 30 Up to now, many synthetic routes have been developed to synthesize porous MgO structures, such as hydrothermal method, 31,32 pulsed-laser deposition, 33 in situ chemical vapor deposition 5,6 and thermal decomposition of magnesium salts, 34,35 or magnesium hydroxide. [36][37][38] Yu et al 36 obtained wormlike porous MgO nanoplates through the calcination of the hydrothermally synthesized Mg(OH) 2 precursor.…”