Nanoporous
Encyclopedia
Nanoporous materials consist of a regular organic
or inorganic framework supporting a regular, porous structure. Pores are by definition roughly in the nanometre
range, that is between 1x10−7 and 0.2x10−9 m.
Subdivisions:
Nanoporous materials can be subdivided into 3 categories, set out by IUPAC:
Organic chemistry
Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, composition, reactions, and preparation of carbon-based compounds, hydrocarbons, and their derivatives...
or inorganic framework supporting a regular, porous structure. Pores are by definition roughly in the nanometre
Nanometre
A nanometre is a unit of length in the metric system, equal to one billionth of a metre. The name combines the SI prefix nano- with the parent unit name metre .The nanometre is often used to express dimensions on the atomic scale: the diameter...
range, that is between 1x10−7 and 0.2x10−9 m.
Subdivisions:
Nanoporous materials can be subdivided into 3 categories, set out by IUPAC:
- Microporous materialMicroporous materialA microporous material is a material containing pores with diameters less than 2 nm.Porous materials are classified into several kinds by their size. According to IUPAC notation A microporous material is a material containing pores with diameters less than 2 nm.Porous materials are...
s: 0.2–2 nm - Mesoporous materialMesoporous materialA mesoporous material is a material containing pores with diameters between 2 and 50 nm.Porous materials are classified into several kinds by their size...
s: 2–50 nm - Macroporous materialsMacroporeIn soil, macropores are defined as cavities that are larger than 75 μm. Functionally, pores of this size host preferential soil solution flow and rapid transport of solutes and colloids. Macropores increase the hydraulic conductivity of soil, allowing water to infiltrate and drain quickly,...
: 50–1000 nm