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

ABSTRACT: 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(NO₃)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.

SUBMITTER: Shinagawa T 

PROVIDER: S-EPMC7841930 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature