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Updated: May 5, 2026
Fabrication of Carbon Nanotube High-Frequency Nanoelectronic Biosensor for Sensing in High Ionic Strength Solutions
Published on: July 22, 2013
Sonochemical fabrication of twinned ZnO hollow ellipses for electrochemical biosensing
Abulikemu Abulizil1, Guo-Hai Yang, Feng Lu
1State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China.
Abstract:
Twinned ZnO hollow ellipses (ZnO HEs) have been successfully fabricated by a one-step template-free sonochemical route. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results showed that the ZnO HEs had a hexagonal wurtzite structure, the wall of which was composed of ZnO nanorods. A possible growth mechanism for the formation of ZnO HEs was proposed, in which sonication played a crucial role. The highly efficient H2O2 electrochemical biosensor was fabricated using the film immobilized with hemoglobin, ZnO HEs and chitosan on glassy carbon electrode. The biosensor showed high stability and excellent electrocatalytic activity toward H2O2 with a linear range from 0.5 to 250 microM and a detection limit of 0.15 microM.
