Controllable design of a macroporous PBA as an efficient non-enzymatic electrochemical sensor for glucose detection

• Published in: CrystEngComm 2023-09, Vol.25 (37), p.5343-535
• Main Authors: Ying, Shuanglu, Liu, Tian, Kong, Yuxuan, Jiang, Qiao, Chai, Ning, Yi, Fei-Yan
• Format: Article
• Language: English
• Subjects: Chemical sensors; Controllability; Glucose; Nanomaterials; Pore size; Sensors
• ISSN: 1466-8033; 1466-8033
• DOI: 10.1039/d3ce00593c

A novel highly sensitive and selective non-enzymatic electrochemical sensor of glucose has been achieved based on a macroporous bird's nest-like CoFePBA nanomaterial, namely HN-CoFePBA. Its pore size is about 750 nm. It is the first time that a hollow PBA material with such a big hole has been successfully obtained based on a two-step design strategy. Herein, ZIF-67 is selected as a sacrificial template and in situ converted and fabricated into the target PBA. More remarkably, the as-synthesized HN-CoFePBA as an electrochemical sensor realizes high-performance detection of glucose including a wide linear range of 5 μM-0.57 mM, a high sensitivity of 564.6 μA mM −1 cm −2 , a low limit of detection (LOD), remarkable stability and good selectivity. The related sensing mechanism for the enhanced glucose performance is also discussed in detail. In a word, this work has developed a new avenue for the construction of macroporous PBA materials with excellent sensing performance. A macroporous bird's nest-like CoFePBA nanomaterial was for the first time successfully obtained based on a two-step design strategy, realizing highly sensitive and selective electrochemical sensing of glucose.