Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8020905 | Materials Letters | 2014 | 4 Pages |
Abstract
A three-dimensional flower-like MoS2 microspheres were prepared and employed to immobilize hemoglobin (Hb) in order to fabricate a novel biosensor. The products were characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical properties of the designed Nafion/Hb/MoS2/GC electrode were investigated by the cyclic voltammograms (CVs). The experimental results show that MoS2 was three-dimensional flower-like microspheres assembled by bent flakes with thickness of about several nanometers, and the diameter of these spheres was approximate 600 nm. Moreover, there were many pores with different diameters consisting of nanosheets on the surface of the MoS2 hierarchical structures. The resulting biosensor displayed a high sensitivity, good reproducibility and long-time stability, and the wide linear range and detection limit was 20-180 μmol Lâ1 and 6.7 μmol Lâ1 for the detection of H2O2.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Hui Liu, Xing Su, Congyue Duan, Xiaonan Dong, Zhenfeng Zhu,