2017
DOI: 10.1021/jacs.6b11469
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Role of Organic Solvents in Immobilizing Fungus Laccase on Single-Walled Carbon Nanotubes for Improved Current Response in Direct Bioelectrocatalysis

Abstract: Improving bioelectrocatalytic current response of redox enzymes on electrodes has been a focus in the development of enzymatic biosensors and biofuel cells. Herein a mediatorless electroreduction of oxygen is effectively improved in terms of a remarkable enhancement by ca. 600% in maximum reductive current by simply adding 20% ethanol into laccase solution during its immobilization onto single-walled carbon nanotubes (SWCNTs). Conformation analysis by circular dichroism and attenuated total reflectance infrare… Show more

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Cited by 79 publications
(48 citation statements)
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“…Enzymatic redox reactions are closely related to the charge transfer process, especially during oxidoreductase-catalyzed processes [42]. Conductive nanostructured supports have been demonstrated as promising candidates to enhance charge transport of redox enzymes.…”
Section: Electron Transfer Effectmentioning
confidence: 99%
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“…Enzymatic redox reactions are closely related to the charge transfer process, especially during oxidoreductase-catalyzed processes [42]. Conductive nanostructured supports have been demonstrated as promising candidates to enhance charge transport of redox enzymes.…”
Section: Electron Transfer Effectmentioning
confidence: 99%
“…Conductive nanostructured supports have been demonstrated as promising candidates to enhance charge transport of redox enzymes. The representative nanomaterials include Au nanoparticles [23], CdS nanorods [82], carbon dots [41], carbon tubes [42], etc. Especially, Au nanoparticles have recently emerged as one of the most prominent supports due to excellent biocompatibility, high specific surface area, and quantum size effects.…”
Section: Electron Transfer Effectmentioning
confidence: 99%
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“…[7] 4-Electron reduction enables high energy conversion efficiencya nd minimizes toxication and deactivation of electrodes.I nt he field of bioelectrocatalysis,f ungal laccases,f or example, Trametas versicolor laccase (TvL), have been intensively studied because of their high redox potential. [8] To date,direct bioelectrocatalysis has been readily achieved by introducing organic solvents, [8c] aromatic compounds (i.e., anthracene, pyrene,a nd their derivatives) [9] and surfactants. [10] Nonetheless, TvLg ets deactivated above pH 6.0 and is seriously inhibited by halogenides,limiting its application.…”
mentioning
confidence: 99%
“…[4] One well-implemented strategy is the integration of nanomaterials,e specially after the discoveries of various carbon-based nanomaterials (e.g.,c arbon nanotubes (CNT) in 1991 and graphene in 2004). [8] To date,direct bioelectrocatalysis has been readily achieved by introducing organic solvents, [8c] aromatic compounds (i.e., anthracene, pyrene,a nd their derivatives) [9] and surfactants. [6] Laccases are usually used as cathodic oxygen reduction catalysts in EBFCs due to the 4-electron reduction to water without scavenging any activated oxygen species,s uch as superoxide,p eroxide,a nd hydroxyl radical.…”
mentioning
confidence: 99%