Surface diagram of activated carbon © Siemens Stiftung 2020 CC BY-SA 4.0 international

Surface diagram of activated carbon

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The cross section of a piece of activated carbon can be labeled interactively.

English, German
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2021-06-25
Activated carbon can be used as a filter for molecular substances. Due to the large number of pores in the activated carbon, as well as the very small pore size (1 to 50 nm), the surface area of these pores adds up to around 10,000 times more than the surface area of normal charcoal. The graphic shows the typical pore sizes and clearly illustrates how the large “internal” surface area of activated carbon is achieved.

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Chemistry; Physics; Technology
Grade 7 to 9; Grade 10 to 13
Middle/high school
Chemical compound; Drinking water; Nanotechnology; Water treatment
Siemens Stiftung Media Portal
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© Siemens Stiftung 2020
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