In Situ Mlcrostrecture Control of Oriented Layered Double Hydroxide Monolayer Films with Curved Hexagonal Crystals as Superhydrophobk Materials

摘要

Layered double hydroxides (LDHs), also known as hydro-talcite-like materials or anionic clays, are an important class of layered materials. Various studies show that LDHs have a wide range of applications in industry, e.g., catalyst precursors, ion exchangers, adsorbents for environmental contaminants, and substrates for the immobilization of biological material. However, for the purpose of developing novel innovative applications of LDHs as materials for chemical sensors, clay-modified electrodes, corrosion-resistant coatings, membrane catalysis, or components in optical and magnetic devices, intensive studies have been conducted aimed at organizing LDH microcrystals into large uniformly aligned 2D arrays or films. Several methods have been employed to fabricate LDH films on different substrates thus far. For example, LDH microcrystals have been deposited on indium-doped SnOi coated glass, platinum disks, and gold electrode surfaces from colloidal suspensions in order to prepare LDH films for electrode modification by deposition'11'12' and Langmuir-Blodgett methods.