Effective bioelectrocatalysis of bilirubin oxidase on electrochemically reduced graphene oxide

Filip, Jaroslav

doi:10.1016/j.elecom.2014.10.012

Cited by 20 publications

(17 citation statements)

References 61 publications

(69 reference statements)

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“…354 However, DET currents could be increased by simply (Fig 25). 346,355 The total pore volume of a network of graphene nanoplatelets could also be increased by adding in the graphene suspension NaH2PO4 that crystallized in the carbon thin film during the drying process, thereby acting as a mold. 356 Very recently, parameters influencing adsorption and electrocatalytic properties of BOD integrated in an electrochemically reduced GO matrix were investigated.…”

Section: Graphenementioning

confidence: 99%

O₂Reduction in Enzymatic Biofuel Cells

2017

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Catalytic four-electron reduction of O to water is one of the most extensively studied electrochemical reactions due to O exceptional availability and high O/HO redox potential, which may in particular allow highly energetic reactions in fuel cells. To circumvent the use of expensive and inefficient Pt catalysts, multicopper oxidases (MCOs) have been envisioned because they provide efficient O reduction with almost no overpotential. MCOs have been used to elaborate enzymatic biofuel cells (EBFCs), a subclass of fuel cells in which enzymes replace the conventional catalysts. A glucose/O EBFC, with a glucose oxidizing anode and a O reducing MCO cathode, could become the in vivo source of electricity that would power sometimes in the future integrated medical devices. This review covers the challenges and advances in the electrochemistry of MCOs and their use in EBFCs with a particular emphasis on the last 6 years. First basic features of MCOs and EBFCs are presented. Clues provided by electrochemistry to understand these enzymes and how they behave once connected at electrodes are described. Progresses realized in the development of efficient biocathodes for O reduction relying both on direct and mediated electron transfer mechanism are then discussed. Some implementations in EBFCs are finally presented.

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Section: Graphenementioning

confidence: 99%

O₂Reduction in Enzymatic Biofuel Cells

2017

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“…Self‐assembly of graphene into hierarchized macrostructures are usually synthesized from GO which is reduced by different methods, such as electrochemical reduction, hydrothermal, solvothermal reduction or chemical reduction . As the starting based material, GO or rGO can be also used together with surfactants and polymers in order to limit agglomeration.…”

Section: D Graphene Nanosheets To 3d Gbmsmentioning

confidence: 99%

From 2D Graphene Nanosheets to 3D Graphene‐based Macrostructures

Firdaus

Berrada

Desforges

et al. 2020

Chemistry An Asian Journal

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The combination of exceptional functionalities offered by 3D graphene‐based macrostructures (GBMs) has attracted tremendous interest. 2D graphene nanosheets have a high chemical stability, high surface area and customizable porosity, which was extensively researched for a variety of applications including CO2 adsorption, water treatment, batteries, sensors, catalysis, etc. Recently, 3D GBMs have been successfully achieved through few approaches, including direct and non‐direct self‐assembly methods. In this review, the possible routes used to prepare both 2D graphene and interconnected 3D GBMs are described and analyzed regarding the involved chemistry of each 2D/3D graphene system. Improvement of the accessible surface of 3D GBMs where the interface exchanges are occurring is of great importance. A better control of the chemical mechanisms involved in the self‐assembly mechanism itself at the nanometer scale is certainly the key for a future research breakthrough regarding 3D GBMs.

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“…As noted, graphene, featuring the ideal one-atom-thick sheet of sp 2 bonded carbon atoms in a honeycomb lattice, is an excellent electrode candidate due to its robust mechanical strength, high electronic conductivity and large specific surface area [32][33][34]. These properties can be utilized to facilitate DET between the active site of the enzyme and the electrode surfaces as well as increase enzyme loading [35]. However, an atomically flat electrode (roughness factor of 1), cannot sustain a sufficient enzyme loading for most practical uses, implying that 3D aspects could be incorporated in the electrode design.…”

Section: Introductionmentioning

confidence: 99%