Special Pore‐Space‐Partition CoFePBA Hollow Framework Realizing High‐Performance Glucose Sensing

Special pore-space-partition CoFePBA hollow framework was elaborately designed and successfully obtained, which exhibited exciting electrochemical sensing performance towards glucose.

Abstract

In this work for the first time pore-space-partition (PSP)-CoFePBA hollow framework is elaborately designed and successfully obtained via self-template internal dissolution strategy. As is demonstrated by our previous report, Prussian blue analogue (PBA) with hollow morphology is very beneficial to improve sensing performance. As expected, the PSP-CoFePBA hollow framework in this work exhibits far superior glucose sensing performance compared with classic CoFePBA nanoparticles and nanoboxes as well as most of reported PBA-based glucose sensors. Herein, very high sensitivity of 1184.18 μA mM⁻¹ cm⁻² and 267.63 μA mM⁻¹ cm⁻² in the concentration range of 5–325 μM and 325–1025 μM, respectively, as well as low detection limit of 0.4 μM (S/N=3) and high stability can be observed. In a word, this work proposes and develops a simple and general synthetic strategy for constructing PBA-based hollow material, that will be very helpful in this field.

Zum Volltext