An Electrochemical Non‐Enzymatic Glucose Sensor Based on Ultrathin PdAg Single‐Crystalline Nanowires. Issue 5 (15th May 2020)

• Record Type: Journal Article
• Authors: Xu, Xiaoxiang; Lv, Hao; Sun, Lizhi; Song, Peng; Liu, Ben; Chen, Xiong
• Is Part Of: ChemPlusChem. Volume 85:Issue 5(2020)
• Page Start: 970
• Page End: 976
• Publication Date: 2020-05-15
• Subjects: Diabetes -- electrochemical sensor -- non-enzymatic glucose sensor -- PdAg alloys -- single-crystalline nanowires; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cplu.202000141
• Languages: English
• ISSNs: 2192-6506

Abstract

Abstract: Electrochemical non‐enzymatic sensors have great potential for prompt and efficient detection of glucose. Herein, a novel, highly efficient electrochemical non‐enzymatic glucose sensor is reported that is based on ultrathin PdAg single‐crystalline nanowires (NWs). Ultrathin PdAg NWs are fabricated by a facile one‐pot aqueous synthesis through an in situ growth strategy with an amphiphilic surfactant as the template. A comparison of the activities of PdAg NWs with different compositional ratios and nanostructures shows that ultrathin Pd2 Ag1 NWs hold the best performance toward electrochemical detection of glucose with an operable sensitivity of 11.6 μA mM −1 cm −2 and a linear response range of 0.1–8 mM. Structural and compositional features of the Pd2 Ag1 NWs allow an excellent selectivity, rapid response, and good long‐term stability for electrochemical glucose sensor. This work thus provides a new possibility for the rational design and synthesis of noble‐metal‐based nanomaterials for non‐enzymatic sensors. Abstract : Rapid response : Ultrathin, single‐crystalline and bimetallic PdAg nanowires with precisely controllable compositional ratios were fabricated through a surfactant‐templating aqueous synthesis. The optimum Pd2 Ag1 nanowires featured synergistically structural and compositional advantages for electrochemical non‐enzymatic glucose sensors. This nanomaterial showed excellent selectivity, rapid response, and good long‐term stability in electrochemical glucose sensing.