Nanoporous materials

Nanoporous materials consist of a regular organic or inorganic framework supporting a regular, porous structure. The size of the pores is generally 100 nanometers or smaller. Most nanoporous materials can be classified as bulk materials or membranes. Activated carbon and zeolites are two examples of bulk nanoporous materials, while cell membranes can be thought of as nanoporous membranes.[1] A porous medium or a porous material is a material containing pores (voids). The skeletal portion of the material is often called the "matrix" or "frame". The pores are typically filled with a fluid (liquid or gas). There are many natural nanoporous materials, but artificial materials can also be manufactured. One method of doing so is to combine polymers with different melting points, so that upon heating one polymer degrades. A nanoporous material with consistently sized pores has the property of letting only certain substances pass through, while blocking others.[1]

Subdivisions

Nanoporous materials can be subdivided into 3 categories, set out by IUPAC:

gollark: Okay, correction, not the last one yet.
gollark: It tries, in priority order:- original channel- direct message to user- original server- arbitrary guilds containing user
gollark: Nope.
gollark: I have very extensive fallbacks.
gollark: ABR does *not* silently fail.

References
  1. Holister, Paul. "Nanoporous Materials" (PDF). Cientifica. Retrieved 6 February 2013.
  2. "IUPAC Gold Book - microporous carbon".
  3. "IUPAC Gold Book - macroporous polymer".


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.