An Overview on (LDHs)
Sreshma C. K. *
Department of Soil Science and Agricultural Chemistry, University of Agricultural Science, GKVK Bangalore, 560065, India.
*Author to whom correspondence should be addressed.
Abstract
Layered Double Hydroxides are inorganic solid minerals with brucite-like structures. They are non-silicate minerals seen in the soil very rare in amount [1]. LDHs have brucite-like layers with an excess positive charge on their surface. The excess charges are balanced by anions that are present in the interlayer. Generally, LDHs are also known as Hydrotalcite-like compounds because Hydrotalcite is one of the LDHs seen commonly in soil. Due to their higher anion exchange capacity, they are also known by the name anionic clay. In nature, they generally occur as a clay mineral, but sometimes as the metabolic by-product of micro-organisms. Even humans can manufacture it at a low cost of production.
Keywords: Layered double hydroxide, octahedral sheets, trivalent cation, chloride anions