Fabrication of a biofuel cell improved by the π-conjugated electron pathway effect induced from a new enzyme catalyst employing terephthalaldehyde
作者： Yongjin Chung , Kyu Hwan Hyun , Yongchai Kwon
DOI: 10.1039/C5NR06703K
关键词:
摘要: A model explaining the π-conjugated electron pathway effect induced by a novel cross-linker adopted enzyme catalyst is suggested and performance stability of an enzymatic biofuel cell (EBC) adopting new are evaluated. For this purpose, terephthalaldehyde (TPA) conventional glutaraldehyde (GA) cross-linkers on glucose oxidase (GOx), polyethyleneimine (PEI) carbon nanotube (CNT)(GOx/PEI/CNT) structure. GOx/PEI/CNT cross-linked TPA (TPA/[GOx/PEI/CNT]) results in superior EBC to other catalysts. It attributed π bonds conjugated between aldehyde amine GOx/PEI molecules. By conjugation, electrons bonded with nitrogen delocalized, promoting transfer catalytic activity excellent performance. The maximum power density (MPD) TPA/[GOx/PEI/CNT] (0.66 mW cm−2) far better than that EBCs (the MPD 0.40 cm−2). Regarding stability, covalent bonding formed plays critical role preventing denaturation GOx molecules, leading stability. repeated measurements activity, maintains its 92% initial value even after five weeks.
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