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Oxidation of activated carbon fibre and its adsorption of amylase

Li Y., Hu S.

Materials Science Poland

2009

Vol. 27, No. 2

453--461

Activated carbon fibre was oxidized by combustion of nitrocellulose and oxidation with nitric acid to introduce the nitrogen and oxygen groups on its surface. The pore structure and chemical groups were investigated by nitrogen adsorption and FTIR. The result showed that the pore structure and surface morphology were not much affected but amide and hydroxyl groups could be introduced after oxidation. The adsorption capacity of amylase was markedly increased, and the hydrolysis activity of starch was maintained after 3 runs.