Hydrous oxides are inorganic compounds of a metal,
hydroxide
Hydroxide is a diatomic anion with chemical formula OH−. It consists of an oxygen and hydrogen atom held together by a single covalent bond, and carries a negative electric charge. It is an important but usually minor constituent of water. It ...
, and weakly bound water. Some examples include:
*
Hydrous ferric oxide (HFO)
*Hydrous cupric oxide
*Hydrous thorium oxide (THO) and hydrous titanium oxide (TiHO)
*Hydrous aluminum oxide (HAO)
Some of them, such as HFO and HAO, are precipitated in highly porous poorly crystalline or amorphous forms and therefore are good adsorbents used for example in
water treatment
Water treatment is any process that improves the quality of water to make it appropriate for a specific end-use. The end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many other uses, includ ...
.
Some others are gels.
Hydrous oxide films may be used an various applications such as electrocatalysis, supercapacitors, and sensors.
HFO and HAO may also result from oxidative weathering of rocks to produce iron an aluminum hydrous oxide clay soils.
See also
*
Hydrate
In chemistry, a hydrate is a substance that contains water or its constituent elements. The chemical state of the water varies widely between different classes of hydrates, some of which were so labeled before their chemical structure was underst ...
*
Ferrihydrite
Ferrihydrite (Fh) is a widespread hydrous ferric oxyhydroxide mineral at the Earth's surface, and a likely constituent in extraterrestrial materials. It forms in several types of environments, from freshwater to marine systems, aquifers to hydro ...
References
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category:inorganic compounds
Hydrogen compounds
Oxygen compounds
Water chemistry