Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
60045 | Chinese Journal of Catalysis | 2013 | 8 Pages |
A nonenzymatic electrochemical sensor for glucose and fructose was fabricated that contained a glassy carbon electrode modified with a copper oxide (CuO)/multiwalled carbon nanotube (MWCNT) nanocomposite. The electrochemical properties of the CuO/MWCNT-modified glassy carbon electrode were investigated. Two distinguishable anodic peaks were observed around 0.30 and 0.44 V corresponding to the oxidation of glucose and fructose, respectively, at the surface of the modified electrode. The detection limits for glucose and fructose were both 0.04 mmol/L. The sensor was used to simultaneously determine the concentrations of glucose and fructose in hydrolyzed sucrose samples, and to measure glucose in blood serum samples, demonstrating its potential as a nonenzymatic carbohydrate sensor.
Graphical abstractA glassy carbon electrode modified with the CuO/MWCNT nanocomposite with excellent synergistic effect, good reproducibility, and strong stability as well as quick response was fabricated as a non-enzymatic electrochemical sensor for the simultaneous determination of glucose and fructose.Figure optionsDownload full-size imageDownload as PowerPoint slide