TY - JOUR
T1 - Polydopamine mediator for glucose oxidation reaction and its use for membraneless enzymatic biofuel cells
AU - Ji, Jungyeon
AU - Kim, Seongjun
AU - Chung, Yongjin
AU - Kwon, Yongchai
N1 - Publisher Copyright:
© 2022 The Korean Society of Industrial and Engineering Chemistry
PY - 2022/7/25
Y1 - 2022/7/25
N2 - Polydopamine (PDA) is used as a biocompatible mediator for fabricating glucose oxidase (GOx) based bioanode of enzymatic biofuel cells (EBFCs). Through the autoxidation and polymerization of dopamine monomer, spherical PDA particles are well synthesized, and their chemical and optical characteristics are verified. Although the durability of bioanode including CNT and PDA (CNT/PDA/GOx/Nafion) is poor, when catalyst including polyethyleneimine (PEI) upper layer (CNT/PDA/GOx/PEI/Nafion) is fabricated, CNT/PDA/GOx/PEI/Nafion shows excellent durability. This indicates PEI plays a critical role in suppressing the leaching out of PDA and GOx molecules. By the role of PEI, the anodic current density of CNT/PDA/GOx/PEI/Nafion (142.6 ± 1.98 μA cm−2 at 0.6 V (vs. Ag/AgCl)) is 17.3 times better than that of CNT/PDA/GOx/Nafion. When maximum power density (MPD) of EBFC using CNT/PDA/GOx/PEI/Nafion is measured, that of EBFC including membrane and platinum-based air–cathode is 552.8 ± 5.4 µW cm−2, and that of membraneless EBFC including bilirubin oxidase biocathode is 135.2 ± 5.45 μW cm−2, which is better than that of other reported EBFCs studies. This confirms that the suggested new catalyst is a viable option as bioanode for EBFC.
AB - Polydopamine (PDA) is used as a biocompatible mediator for fabricating glucose oxidase (GOx) based bioanode of enzymatic biofuel cells (EBFCs). Through the autoxidation and polymerization of dopamine monomer, spherical PDA particles are well synthesized, and their chemical and optical characteristics are verified. Although the durability of bioanode including CNT and PDA (CNT/PDA/GOx/Nafion) is poor, when catalyst including polyethyleneimine (PEI) upper layer (CNT/PDA/GOx/PEI/Nafion) is fabricated, CNT/PDA/GOx/PEI/Nafion shows excellent durability. This indicates PEI plays a critical role in suppressing the leaching out of PDA and GOx molecules. By the role of PEI, the anodic current density of CNT/PDA/GOx/PEI/Nafion (142.6 ± 1.98 μA cm−2 at 0.6 V (vs. Ag/AgCl)) is 17.3 times better than that of CNT/PDA/GOx/Nafion. When maximum power density (MPD) of EBFC using CNT/PDA/GOx/PEI/Nafion is measured, that of EBFC including membrane and platinum-based air–cathode is 552.8 ± 5.4 µW cm−2, and that of membraneless EBFC including bilirubin oxidase biocathode is 135.2 ± 5.45 μW cm−2, which is better than that of other reported EBFCs studies. This confirms that the suggested new catalyst is a viable option as bioanode for EBFC.
KW - Enzymatic biofuel cell
KW - Glucose oxidase
KW - Mediated electron transfer
KW - Polydopamine
UR - http://www.scopus.com/inward/record.url?scp=85132648330&partnerID=8YFLogxK
U2 - 10.1016/j.jiec.2022.04.006
DO - 10.1016/j.jiec.2022.04.006
M3 - Article
AN - SCOPUS:85132648330
SN - 1226-086X
VL - 111
SP - 263
EP - 271
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
ER -
