An Electrochemical Non‐Enzymatic Glucose Sensor Based on Ultrathin PdAg Single‐Crystalline Nanowires

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 Pd 2 Ag 1 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 Pd 2 Ag 1 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.