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Boosting Electrochemical Catalysis and Nonenzymatic Sensing Toward Glucose by Single‐Atom Pt Supported on Cu@CuO Core–Shell Nanowires

Journal Article · · Small
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  1. Collaborative Innovation Center for Advanced Organic Chemical Materials Co‐constructed by the Province and Ministry Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 P. R. China
  2. The Institute for Advanced Studies (IAS) Wuhan University Wuhan 430072 P. R. China
  3. Department of Chemistry and Material Science and Engineering Program Washington State University Pullman WA 99164 USA

Abstract

It is critical to develop high‐performance electrocatalyst for electrochemical nonenzymatic glucose sensing. In this work, a single‐atom Pt supported on Cu@CuO core–shell nanowires (Pt1/Cu@CuO NWs) for electrochemical nonenzymatic glucose sensor is designed. Pt1/Cu@CuO NWs exhibit excellent electrocatalytic oxidation toward glucose with 70 mV lower onset potential (0.131 V) and 2.4 times higher response current than Cu NWs. Sensors fabricated using Pt1/Cu@CuO NWs also show high sensitivity (852.163 µA mM−1cm−2), low detection limit (3.6 µM), wide linear range (0.01–5.18 µM), excellent selectivity, and great long‐term stability. The outstanding sensing performance of Pt1/Cu@CuO NWs, investigated by experiments and density functional theory (DFT) calculations, is attributed to the synergistic effect between Pt single atoms and Cu@CuO core–shell nanowires that generates strong binding energy of glucose on the nanowires. The work provides a new pathway for exploring highly active SACs for electrochemical nonenzymatic glucose sensor.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-06CH11357
OSTI ID:
2423301
Journal Information:
Small, Journal Name: Small Journal Issue: 18 Vol. 19; ISSN 1613-6810
Publisher:
Wiley
Country of Publication:
United States
Language:
English

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