Ni3V2O8 Nanosheets Grafted on 3D Helical‐shaped Carbon Nanocoils as A Binder‐free Hierarchical Composite for Efficient Non‐enzymatic Glucose Sensing

• Published in: Advanced functional materials 2023-08, Vol.33 (33), p.n/a
• Main Authors: Farid, Amjad, Zhonghua, Chen, Khan, Abdul Sammed, Javid, Muhammad, Khan, Ijaz Ahmad, Khan, Aqib Ali, Fan, Zeng, Pan, Lujun
• Format: Article
• Language: English
• Subjects: 3D helical‐shape carbon nanocoils; binder‐free composites; Biomimetics; Catalytic activity; Chemical vapor deposition; Electrical measurement; Enzymes; Glucose; hierarchical conductive scaffolds; Materials science; Metal foams; Nanomaterials; Nanosheets; Nickel vanadates; non‐enzymatic glucose sensors; Oxidation; Production costs; Scaffolds; Sensors; Transition metals
• ISSN: 1616-301X; 1616-3028
• DOI: 10.1002/adfm.202301727

High fabrication cost, chemical instability, and complex immobilization of enzyme molecules are critical issues of enzyme‐based glucose sensors. Designing state‐of‐the‐art, binder‐free, and non‐enzymatic glucose sensing probes plays an imperative role to cope with the aforementioned issues. 3D carbonaceous nanomaterials coated with transition metal vanadates (TMVs) are a favorable biomimetic platform for glucose quantification. Peculiar hierarchical structure, enhanced conductivity, synergistic interaction, multiple oxidation states, and high catalytic activity would make such composite a potential contender for non‐enzymatic glucose sensing. Herein, 3D helical‐shaped carbon nanocoils (CNCs) are grown on nickel foam (NF) via chemical vapor deposition method to prepare a robust CNCs/NF scaffold. Then, a hydrothermal route is followed to grow interconnected free‐standing Ni3V2O8 nanosheets (NSs) on CNCs/NF scaffold. This novel and binder‐free Ni3V2O8 NSs/CNCs/NF hierarchical composite possesses superior electrochemical active area (ECSA) and exceptional electrochemical efficacy. Amperometric analysis exhibits extremely prompt detection time (0.1 s), elevated sensitivity (5214 µA mM−1 cm−2), and low detection limit (0.04 µM). Developed sensor demonstrates appreciable recoveries (93.3 to 103.3%) regarding glucose concentration in human serum. The appealing analytical results show that deployment of a 3D helical‐shaped hierarchical smart scaffold can be an effective strategy for developing efficient and advanced non‐enzymatic glucose sensors. An ingenious strategy of utilizing 3D helical‐CNCs/NF smart conductive scaffold for binder‐free and free‐standing Ni3V2O8 NSs growth is introduced. Well‐architected and hierarchical Ni3V2O8 NSs/CNCs/NF composite electrode efficaciously demonstrates non‐enzymatic glucose sensing in terms of prompt response time (0.1 s), elevated sensitivity (5214 µA mM−1 cm−2) and low detection limit (0.04 µM). Developed non‐enzymatic glucose sensors are practically feasible for human serum sample analysis.