CuII-Mediated Ultra-efficient Electrooxidation of Glucose

Weiran Zheng; Yong Li; Chui Shan Tsang; Liangsheng Hu; Mengjie Liu; Bolong Huang; Lawrence Yoon Suk Lee; Kwok Yin Wong

doi:10.1002/celc.201700712

Cu^II-Mediated Ultra-efficient Electrooxidation of Glucose

Weiran Zheng, Yong Li, Chui Shan Tsang, Liangsheng Hu, Mengjie Liu, Bolong Huang, Lawrence Yoon Suk Lee^*, Kwok Yin Wong

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Electrooxidation of glucose represents an economic conversion of biomass and has gained global interest for applications in fuel cells and sensors. Herein, we report a new, simple, and highly efficient method of glucose electrooxidation without involving any sophisticated electrode modification with biocatalysts or nanostructures. Micromolar-level Cu ions are added to coordinate with glucose in alkaline electrolyte. The coordinated glucose is oxidized by electrochemically generated Cu^III with excellent conversion efficiency (TOF=18.7 s⁻¹) and ultra-high sensitivity (1,814 mA M⁻¹ cm⁻²) under mild conditions. Both experimental and theoretical investigations show that the Cu^II-glucose plays a critical role in such high efficiency, which significantly reduces the oxidation potential and avoids catalyst poisoning. Our electrocatalytic system delivers remarkable atomic efficiency with high stability, thus offering great potential for applications in fuel cell and sensor design at low cost.

Original language	English
Pages (from-to)	2788-2792
Number of pages	5
Journal	ChemElectroChem
Volume	4
Issue number	11
DOIs	https://doi.org/10.1002/celc.201700712
State	Published - Nov 2017
Externally published	Yes

Keywords

copper-glucose coordination
electrocatalyst
glucose oxidation
homogeneous catalysis

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title = "CuII-Mediated Ultra-efficient Electrooxidation of Glucose",

abstract = "Electrooxidation of glucose represents an economic conversion of biomass and has gained global interest for applications in fuel cells and sensors. Herein, we report a new, simple, and highly efficient method of glucose electrooxidation without involving any sophisticated electrode modification with biocatalysts or nanostructures. Micromolar-level Cu ions are added to coordinate with glucose in alkaline electrolyte. The coordinated glucose is oxidized by electrochemically generated CuIII with excellent conversion efficiency (TOF=18.7 s−1) and ultra-high sensitivity (1,814 mA M−1 cm−2) under mild conditions. Both experimental and theoretical investigations show that the CuII-glucose plays a critical role in such high efficiency, which significantly reduces the oxidation potential and avoids catalyst poisoning. Our electrocatalytic system delivers remarkable atomic efficiency with high stability, thus offering great potential for applications in fuel cell and sensor design at low cost.",

keywords = "copper-glucose coordination, electrocatalyst, glucose oxidation, homogeneous catalysis",

author = "Weiran Zheng and Yong Li and Tsang, {Chui Shan} and Liangsheng Hu and Mengjie Liu and Bolong Huang and Lee, {Lawrence Yoon Suk} and Wong, {Kwok Yin}",

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year = "2017",

month = nov,

doi = "10.1002/celc.201700712",

language = "英语",

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T1 - CuII-Mediated Ultra-efficient Electrooxidation of Glucose

AU - Zheng, Weiran

AU - Li, Yong

AU - Tsang, Chui Shan

AU - Hu, Liangsheng

AU - Liu, Mengjie

AU - Huang, Bolong

AU - Lee, Lawrence Yoon Suk

AU - Wong, Kwok Yin

PY - 2017/11

Y1 - 2017/11

N2 - Electrooxidation of glucose represents an economic conversion of biomass and has gained global interest for applications in fuel cells and sensors. Herein, we report a new, simple, and highly efficient method of glucose electrooxidation without involving any sophisticated electrode modification with biocatalysts or nanostructures. Micromolar-level Cu ions are added to coordinate with glucose in alkaline electrolyte. The coordinated glucose is oxidized by electrochemically generated CuIII with excellent conversion efficiency (TOF=18.7 s−1) and ultra-high sensitivity (1,814 mA M−1 cm−2) under mild conditions. Both experimental and theoretical investigations show that the CuII-glucose plays a critical role in such high efficiency, which significantly reduces the oxidation potential and avoids catalyst poisoning. Our electrocatalytic system delivers remarkable atomic efficiency with high stability, thus offering great potential for applications in fuel cell and sensor design at low cost.

AB - Electrooxidation of glucose represents an economic conversion of biomass and has gained global interest for applications in fuel cells and sensors. Herein, we report a new, simple, and highly efficient method of glucose electrooxidation without involving any sophisticated electrode modification with biocatalysts or nanostructures. Micromolar-level Cu ions are added to coordinate with glucose in alkaline electrolyte. The coordinated glucose is oxidized by electrochemically generated CuIII with excellent conversion efficiency (TOF=18.7 s−1) and ultra-high sensitivity (1,814 mA M−1 cm−2) under mild conditions. Both experimental and theoretical investigations show that the CuII-glucose plays a critical role in such high efficiency, which significantly reduces the oxidation potential and avoids catalyst poisoning. Our electrocatalytic system delivers remarkable atomic efficiency with high stability, thus offering great potential for applications in fuel cell and sensor design at low cost.

KW - copper-glucose coordination

KW - electrocatalyst

KW - glucose oxidation

KW - homogeneous catalysis

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U2 - 10.1002/celc.201700712

DO - 10.1002/celc.201700712

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VL - 4

SP - 2788

EP - 2792

JO - ChemElectroChem

JF - ChemElectroChem

IS - 11

ER -

Cu^II-Mediated Ultra-efficient Electrooxidation of Glucose

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Keywords

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