Electrochemical Growth of Mg(OH)<sub><i>x</i></sub> Layered Films Stacked Parallel to the Substrates and Their Thermal Conversion to (111)-Oriented Nanoporous MgO Films
Tsutomu Shinagawa, Masaya Chigane, Masanobu Izaki
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.
Topics & Concepts
NanoporousStackingMaterials scienceHydroxideSubstrate (aquarium)ElectrolysisAqueous solutionMagnesiumChemical engineeringElectrochemistryDeposition (geology)Metal hydroxideNanotechnologyChemistryMetallurgyElectrodeOrganic chemistryPhysical chemistryElectrolyteBiologyPaleontologyGeologyEngineeringSedimentOceanographyLayered Double Hydroxides Synthesis and ApplicationsMagnesium Oxide Properties and ApplicationsMultiferroics and related materials