Hydrous oxides are inorganic compounds of a metal, hydroxide, and weakly bound water. Some examples include:
- Hydrous ferric oxide (HFO)1
- Hydrous cupric oxide2
- Hydrous thorium oxide (THO) and hydrous titanium oxide (TiHO) 3
- Hydrous aluminum oxide (HAO)4
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.5
Some others are gels.
Hydrous oxide films may be used an various applications such as electrocatalysis, supercapacitors, and sensors.67
HFO and HAO may also result from oxidative weathering of rocks to produce iron an aluminum hydrous oxide clay soils.8
References
References
- Weiser, H. B. (1920). "Hydrous Oxides. I". The Journal of Physical Chemistry. 24 (4): 277–328. doi:10.1021/j150202a003.
- Weiser, H. B. (1923). "Hydrous Oxides. V". The Journal of Physical Chemistry. 27 (6): 501–532. doi:10.1021/j150231a001.
- Heitner-Wirguin, C.; Albu-Yaron, A. (1966). "Hydrous oxides and their cation exchange properties—II Structure and equilibrium experiments". Journal of Inorganic and Nuclear Chemistry. 28 (10): 2379–2384. doi:10.1016/0022-1902(66)80129-X.
- Karthikeyan, K.G; Elliott, Herschel A. (1999). "Surface Complexation Modeling of Copper Sorption by Hydrous Oxides of Iron and Aluminum". Journal of Colloid and Interface Science. 220 (1): 88–95. Bibcode:1999JCIS..220...88K. doi:10.1006/jcis.1999.6507. PMID 10550244.
- Benjamin, Mark M.; Lawler, Desmond F. (13 June 2013). Water Quality Engineering: Physical / Chemical Treatment Processes. ISBN 9781118632277.
- Paunovic, Milan; Scherson, Daniel (1997). Proceedings of the Third Symposium on Electrochemically Deposited Thin Films. ISBN 9781566771696.
- Brandon, Erik J. (2003). Micropower and Microdevices: Proceedings of the International Symposium. ISBN 9781566773874.
- Rycroft, David W.; Amer, M. H. (1995). Prospects for the Drainage of Clay Soils. ISBN 9789251036242.