Conjugated schiff base polymer foam/macroporous carbon integrated electrode for electrochemical sensing

Conjugated Schiff base polymer (CSBP) foam was grown on three-dimensional macroporous kenaf stem derived carbon (3D-KSCs/CSBP) integrated electrode via aldimine condensation between hydrazine anhydrous and terephthalaldehyde for the first time. The CSBP nanosheets with thickness of 0.5 nm forming CSBP foam on the 3D-KSC was used as supporting matrix to develop new electrode which owned low electrical resistance, wide potential window, rapid electron/mass transfer and good stability toward pH and temperature. Through the electrodeposition of Cu nanoparticles (CuNPs) on the surface of 3D-KSCs/CSBP integrated electrode, an original nonenzymatic glucose sensor was designed as an example to explore the practicability of 3D-KSCs/CSBP for electrochemical sensing. Owing to its high stability, hierarchically porous nanostructures, large specific surface as well as the good catalytic activity of CuNPs, glucose can be quantitatively detected ranging from 3.39 mu M to 3.57 mM based on 3D-KSCs/CSBP/CuNPs-integrated electrode and the detection limit was 1.12 mu M with a high sensitivity of 2.95 mA cm(-2) mM(-1). The 3D-KSCs/CSBP integrated electrode can be not only used to load metal or bimetallic NPs for glucose detection, but also employed as potential material for various filed including supercapacitors, biosensor and fuel cells. (C) 2018 Elsevier B.V. All rights reserved.