Electrochemical Growth of Mg(OH) x Layered Films Stacked Parallel to the Substrates and Their Thermal Conversion to (111)-Oriented Nanoporous MgO Films

High Resolution Image Download MS PowerPoint Slide Stacking layered metal hydroxide films parallel to a substrate is challenging. Here, we demonstrate a simple and rapid electrodeposition method for stacking magnesium hydroxide layered films. Room-temperature cathodic electrolysis (40 mA cm –2 ) in a Mg(NO 3 ) 2 aqueous solution induces the deposition of ⟨001⟩-oriented Mg(OH) x layered films stacked parallel to the substrate at the deposition rate of ∼2 μm min –1 . The obtained Mg(OH) x layered films undergo an overall oriented transformation by heat treatment to form ⟨111⟩-oriented nanoporous MgO films.