Electrochemical Fabrication of Cobalt Oxides/Nanoporous Gold Composite Electrode and its Nonenzymatic Glucose Sensing Performance

Zhou, Chaohui; Tang, Xueyong; Xia, Yue; Li, Zelin

doi:10.1002/elan.201501177

Cited by 15 publications

(10 citation statements)

References 47 publications

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“…The electrocatalytic glucose electro-oxidation reaction (GOR) has been extensively studied as an anodic process in DGFCs over the past few decades. [9][10][11][12][13][14][15][16][17][18][19] Glucose can serve as a non-toxic, low-cost and renewable anode fuel. 20,21 However, the lack of a highly efficient electrocatalyst for the GOR and a viable integrated process for the membrane electrodes assembly (MEA) in fuel cells remain the largest obstacles to the practical application of DGFCs.…”

mentioning

confidence: 99%

Enhancing the Glucose Oxidation on Nanocrystalline Au Thin-Films by Integrating Nanoporous Framework and Structural Defects

Zhang

Yang

Chen

et al. 2019

J. Electrochem. Soc.

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To realize the commercial feasibility of nanoporous metal-based electrocatalysts in fuel cells, there is a need for a rapid and viable integrated process for fabricating membrane electrodes assemblies (MEAs). Herein, we report a type of electrocatalyst design for the glucose electro-oxidation reaction (GOR) based on a solid-phase reaction method. In the proposed design, structural defects and a nanoporous framework were integrated in a nanoporous gold (NPG) thin-film electrocatalyst to effectively boost the electrocatalytic behaviors for the GOR in an alkaline solution. The fabricated NPG thin-film catalyst was shown to exhibit a specific activity ca. 1.6 and 25.0 times higher than those of conventional NPG and polycrystalline Au and remarkably higher long-term cyclic stability. Hence, the proposed approach is a promising strategy for the integrated preparation of NPG-based MEAs, which are expected to ultimately promote the commercial applicability of fuel cells.

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mentioning

confidence: 99%

Enhancing the Glucose Oxidation on Nanocrystalline Au Thin-Films by Integrating Nanoporous Framework and Structural Defects

Zhang

Yang

Chen

et al. 2019

J. Electrochem. Soc.

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“…Based on the linear range and LOD, glucose sensing electrodes can be categorized into three groups: for blood, [149,184,186,190] for sweat, [182,183,[187][188][189]194,[198][199][200][201][202][203][204] and for both analytes. [177,[191][192][193][195][196][197]205,206] Among the enzymatic amperometric glucose sensors, the electrode fabricated by Li et al using CoS-functionalized MWCNTs with a GOx surface layer exhibits an excellent sensitivity of 15 000 μA mm −1 cm −2 .…”

Section: Amperometrymentioning

confidence: 99%

“…[177,193,[195][196][197]206] In contrast, non-precious transition metal oxide (Cu and Co oxides) electrodes mainly provide a linear range for sweat glucose. [201][202][203][204] Thus, non-noble metal oxides are suitable for sweat glucose monitoring and mass production.…”

Section: Amperometrymentioning

confidence: 99%

Analyzing Electrochemical Sensing Fundamentals for Health Applications

Alam,

Mitea,

Howlader

et al. 2023

Advanced Sensor Research

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Humans continuously interact with physical, chemical, and biological environments that influence their health, safety, and quality of life. Sensing devices, such as electrochemical sensors that translate environmental qualities into electrical signals, are crucial for detecting biomarker concentrations in various biofluids. However, the understanding of electrochemical sensing is often incomplete, necessitating further study of chemical reactions and sensor‐electrode interactions for healthcare applications. This review analyzes crucial topics in chemical reactions in electrochemical sensing environments. First, the dynamics of chemical energy, the roles of acidic and alkaline fluids, chemical reaction tendencies, thermodynamic equilibria, Gibbs free energy, water dissociation, and the pH scale are discussed. Sensor materials or biomarkers undergo oxidation and reduction reactions in electrochemical sensing. Oxygen‐derived radicals and nonradical reactive species significantly influence biochemical reactions, cellular responses, and clinical outcomes. Then, the review delves into the impact of oxidation reduction reactions on human pathophysiology, redox reactions in hemoglobin, redox environments in human serum albumin and cells/tissues, and thermodynamics of biological redox reactions. Finally, recent advances in electrochemical techniques are presented and research challenges and future perspectives in electrochemical sensing for health applications are addressed.

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“…The with the limit of detection as low as 0.0036 nM [77]. The non-enzymatic amperometric glucose sensor is possible using np-Au electrode [11] or by modifying the np-Au surface with other metals or metal oxides [78]. However, np-Au surface can be modified with glucose oxidase to use the synergistic catalytic properties of both np-Au and glucose oxidase for the detection of glucose.…”

Section: Electrochemical Biosensormentioning

confidence: 99%

Structure and Applications of Gold in Nanoporous Form

Bhattarai¹,

Neupane²,

Nepal³

et al. 2018

Noble and Precious Metals - Properties, Nanoscale Effects and Applications

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Nanoporous gold (np-Au) has many interesting and useful properties that make it a material of interest for use in many technological applications. Its biocompatible nature and ability to serve as a support for self-assembled monolayers of alkanethiols and their derivative make it a suitable support for the immobilization of carbohydrates, enzymes, proteins, and DNA. Its chemically inert, physically robust and conductive high-surface area makes it useful for the design of electrochemistry-based chemical/bio-sensors and reactors. Furthermore, it is also used as solid support for organic molecular synthesis and biomolecules separation. Its enhanced optical property has application in design of plasmonics-based sensitive biosensors. In fact, np-Au is one of the few materials that can be used as a transducer for both optical and electrochemical biosensing. Due to the presence of low-coordination surface sites, np-Au shows remarkable catalytic activity for oxidation of molecules like carbon monoxide and methanol. Owing to the importance of np-Au, in this chapter we will highlight different strategies of fabrication of np-Au and its emerging applications based on its unique properties.

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Electrochemical Fabrication of Cobalt Oxides/Nanoporous Gold Composite Electrode and its Nonenzymatic Glucose Sensing Performance

Cited by 15 publications

References 47 publications

Enhancing the Glucose Oxidation on Nanocrystalline Au Thin-Films by Integrating Nanoporous Framework and Structural Defects

Enhancing the Glucose Oxidation on Nanocrystalline Au Thin-Films by Integrating Nanoporous Framework and Structural Defects

Analyzing Electrochemical Sensing Fundamentals for Health Applications

Structure and Applications of Gold in Nanoporous Form

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