Enhanced electrochemical glucose sensing of Co/Cu-MOF by hydroxyl adsorption induced reactive oxygen species

Zhao, Zhenlu; Wang, Peihan; Hou, S.

doi:10.1039/d3ay00441d

Cited by 8 publications

(2 citation statements)

References 49 publications

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“…Practically, MOFs are reported to release metal ions and ligands in water media, − concurrently experiencing structural reconstruction stimulated by electrochemical environment. − Furthermore, it has been observed that MOFs undergo surface reconstruction to generate oxyhydroxides during glucose electrocatalytic oxidation. − These phenomena raise two critical inquiries: first, the veritable source of catalytic activity governing glucose oxidation and, second, the extent to which this reconstruction transpires, whether it remains confined to the surface of MOFs or penetrates deeper as the reaction proceeds. Nevertheless, these aspects have not been explored in depth within the current literature.…”

Section: Introductionmentioning

confidence: 99%

Fast and In-Depth Reconstruction of Two-Dimension Cobalt-Based Zeolitic Imidazolate Framework in Glucose Oxidation Processes

Jin,

Zeng,

Qian

et al. 2024

ACS Appl. Mater. Interfaces

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Currently, metal−organic frameworks (MOFs) have emerged as viable candidates for enduring electrode materials in nonenzyme glucose sensing. However, given the inherent water susceptibility of MOFs and their complete self-reconstruction during the process of electrochemical oxygen evolution in alkaline conditions, we are motivated to explore the truth of MOFs catalyzing glucose oxidation. In this work, we fabricated a two-dimensional cobalt-based zeolitic imidazolate framework (ZIF-L) as the electrode material for catalyzing glucose oxidation in alkaline conditions. Our explorations revealed that while the initial glucose catalytic response varied among ZIF-L samples with differing thicknesses, the ultimate steady-state catalytic performance remained largely consistent. This phenomenon arose from the transformation of ZIF-L with distinct thicknesses into CoOOH with uniform morphological and structural characteristics during the glucose catalysis process. And in situ Raman spectroscopy elucidated the sustained equilibrium within the glucose catalytic system, wherein the dynamic interconversion between CoOOH and Co(OH) 2 governs the overall process. This study contributes to an enhanced understanding of the glucose catalytic mechanism aspects of nonenzymatic glucose sensor electrode materials, offering insights that serve as inspiration for the development of advanced glucose electrode materials.

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Section: Introductionmentioning

confidence: 99%

Fast and In-Depth Reconstruction of Two-Dimension Cobalt-Based Zeolitic Imidazolate Framework in Glucose Oxidation Processes

Jin,

Zeng,

Qian

et al. 2024

ACS Appl. Mater. Interfaces

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“…31,32 Despite the significant advancements made with CPs/ MOFs, their application in glucose sensing has been hindered by the generally poor conductivity of the hybrid organic− inorganic polymers. 33,34 To address these limitations, innovative strategies have been implemented, including the integration of MOFs with conductive materials and performance improvement through the incorporation of transition metal ions, such as Ni, 35,36 Cu, 37,38 Ce, 39 Fe, 40 and Co, 41,42 which are known for their catalytic activity toward electrochemical sensing of glucose. This methodology not only diminishes the overpotential required for glucose oxidation but also enhances electron exchange through different mechanisms, thereby demonstrating the potential of CPs/MOFs in practical applications.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Nanorod-Shaped Co(II) Coordination Polymer on Three-Dimensional Metallic Foam: A Hybrid Platform for Electrochemical Oxidation of Glucose

Angizi,

Rahmati,

Hatamie

et al. 2024

Langmuir

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This study unveils a novel electrochemical biosensor for monitoring glucose in biological fluids by employing nanorods of a cobalt-bispyridyl/dicarboxylate framework grown in a layer-by-layer manner on a highly porous nickel substrate. The hybrid microporous system has a bicatalytic effect on glucose oxidation due to the synergistic catalytic impact of the nickel and cobalt ions with varying oxidation states as electroactive sites. In addition, the controlled growth of inorganic−organic frameworks changes the mechanism of electron transfer from a diffusioncontrolled process to an adsorption-controlled process, thus yielding a low onset oxidation potential (∼0.21 V/Ag-AgCl) and a high current intensity (∼1 mA) for the oxidation of glucose in alkaline media. A fast response time (∼2 s) and a reasonably high sensitivity (0.14 μA μM −1 ) within a broad linear range (40−360 μM) have determined the suitability and superiority of the hybrid electrode for glucose monitoring compared to many metal−organic-based biosensors. The facile fabrication process of the Co(II) coordination polymer/Ni substrate with a large surface area that benefits from the synergetic catalytic activity of nickel−cobalt hybrids may pave the way for the development of novel hybrid electrodes for biosensors and direct glucose fuel cells.

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Accelerated reconstruction of ZIF-67 with significantly enhanced glucose detection sensitivity

Jin,

Zeng,

Qian

et al. 2024

Nano Res.

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Enhanced electrochemical glucose sensing of Co/Cu-MOF by hydroxyl adsorption induced reactive oxygen species

Abstract: Exploring the factors affecting the electrochemical catalytic signal of organic metal material sensor and analyzing the decisive steps of the glucose oxidation behavior is a challenging problem. Here, we designed...

Cited by 8 publications

References 49 publications

Fast and In-Depth Reconstruction of Two-Dimension Cobalt-Based Zeolitic Imidazolate Framework in Glucose Oxidation Processes

Fast and In-Depth Reconstruction of Two-Dimension Cobalt-Based Zeolitic Imidazolate Framework in Glucose Oxidation Processes

Two-Dimensional Nanorod-Shaped Co(II) Coordination Polymer on Three-Dimensional Metallic Foam: A Hybrid Platform for Electrochemical Oxidation of Glucose

Accelerated reconstruction of ZIF-67 with significantly enhanced glucose detection sensitivity

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