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http://dx.doi.org/10.9713/kcer.2017.55.2.258

Performance Evaluation of Biofuel cell using Benzoquinone Entrapped Polyethyleneimine-Carbon nanotube supporter Based Enzymatic Catalyst  

Ahn, Yeonjoo (Grad. School of Energy and Environment, Seoul National Univ. of Science and Technology)
Chung, Yongjin (Grad. School of Energy and Environment, Seoul National Univ. of Science and Technology)
Kwon, Yongchai (Grad. School of Energy and Environment, Seoul National Univ. of Science and Technology)
Publication Information
Korean Chemical Engineering Research / v.55, no.2, 2017 , pp. 258-263 More about this Journal
Abstract
In this study, we synthesized biocatalyst consisting of glucose oxidase (GOx), polyethyleneimine (PEI) and carbon nanotube (CNT) with addition of p-benzoquinone (BQ) that was considered anodic catalysts of enzymatic biofuel cell (EBC). For doing this, PEI/CNT supporter was bonded with BQ by physical entrapping method stemmed from electrostatic attractive force ([BQ/PEI]/CNT). In turn, GOx moiety was further immobilized on the [BQ/PEI]/CNT to form GOx/[BQ/PEI]/CNT catalyst. This catalyst has a special advantage in that the BQ that has been usually dissolved into electrolyte was immobilized on supporter. According to the electrochemical analysis, maximum current density of the GOx/[BQ/PEI]/CNT catalyst was 1.9 fold better than that of the catalyst that did not entrap BQ with the value of $34.16{\mu}A/cm^2$, verifying that catalytic activity of the catalyst was enhanced by adoption of BQ. Also, when it was used as anodic catalyst of the EBC, its maximum power density was 1.2 fold better than that of EBC using the catalyst that did not entrap BQ with the value of $0.91mW/cm^2$. Based on such results, it turned out that the GOx/[BQ/PEI]/CNT catalyst was promising and viable as anodic catalyst of EBC.
Keywords
Benzoquinone; Glucose oxidase; Biofuel cell; Mediated electron transfer;
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Times Cited By KSCI : 2  (Citation Analysis)
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