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Nanofibrous Membranes Containing Carbon Nanotubes: Electrospun for Redox Enzyme Immobilization
Author(s) -
Wang ZhenGang,
Xu ZhiKang,
Wan LingShu,
Wu Jian,
Innocent Christophe,
Seta Patrick
Publication year - 2006
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200500885
Subject(s) - electrospinning , nanofiber , membrane , carbon nanotube , redox , covalent bond , immobilized enzyme , materials science , chemical engineering , catalase , polymer chemistry , electron transfer , scanning electron microscope , chemistry , nanotechnology , polymer , enzyme , composite material , organic chemistry , biochemistry , engineering , metallurgy
Summary: Nanofibrous membranes that possess reactive groups are fabricated by the electrospinning process from PANCAA solutions that contain MWCNTs. Field emission scanning electron microscopy is used to evaluate the morphology and diameter of the nanofibers. Potentials for applying these nanofibrous membranes to immobilize redox enzymes by covalent bonding are explored. It is envisaged that the electrospun nanofibrous membranes could provide a large specific area and the MWCNTs could donate/accept electrons for the immobilized redox enzymes. Results indicate that, after blending with MWCNTs, the diameter of the PANCAA nanofiber increases slightly. The PANCAA/MWCNT nanofibrous membranes immobilize more enzymes than that without MWCNTs. Moreover, as the concentration of the MWCNTs increases, the activity of the immobilized catalase is enhanced by about 42%, which is mainly attributed to the promoted electron transfer through charge‐transfer complexes and the π system of MWCNTs.The covalent immobilization of redox enzymes, such as catalase, on a PANCAA/MWCNTs nanofiber.