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    Nitrogen-doped carbon nanotubes enhanced laccase enzymatic reactivity towards oxygen reduction and its application in biofuel cell

    Year: 2012

    Journal: Electrochemistry communications 2012, 22 pp 181-184, 20121211

    Authors: Wei Wei, Peipei Li, Ying Li, Xiaodong Cao, Songqin Liu

    Organizations: Key Laboratory of Environmental Medicine and Engineering of Ministry of Education, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, PR China

    Nitrogen-dopedcarbonnanotubes (NCNTs) were designed for the immobilization and biosensing of proteins. The glutaraldehyde functionalized chitosan (GCS) was mixed with NCNTs to generate nanocomposites for enzyme immobilization. Laccase (Lac) or glucose oxidase (GOD) in GCS/NCNT nanocomposites displayed excellent enzymatic activity towards the reduction of oxygen or the oxidation of glucose. This led to elaboration of a glucose/air biofuelcell with a maximum power density of 21 µW cm- 2 at 0.2 V.