Hemin-Engineered UiO-66(Ce) as a Highly Active Nanozyme for Electrochemical Sensing of Hydrogen Peroxide and Hydrogen
Yifan Chen1, Runqing Lv1, Zhenmao Chen1
1Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou 363000, P. R. China.
Abstract:
A hemin (Hm)-engineered cerium-based metal-organic framework (MOF), UiO-66(Ce)@Hm, was prepared and used as a nanozyme for electrochemical sensing of hydrogen peroxide (H2O2) and dissolved hydrogen (H2) in beverages. UiO-66(Ce)@Hm showed enhanced electrocatalytic activity toward H2O2 because of the synergistic catalytic effects of Hm and UiO-66(Ce). The resulting sensor enabled H2O2 detection from 0.5 to 250 μM with a detection limit of 0.32 μM, and was successfully applied to milk analysis. In addition, dissolved H2 in hydrogen-rich water (HRW) promoted the catalytic conversion of o-phenylenediamine/H2O2 to electroactive 2,3-diaminophenazine, allowing H2 determination from 45 to 900 μM with a detection limit of 26.2 μM. These results demonstrate the potential of UiO-66(Ce)@Hm for food safety monitoring and quality assessment of HRW beverages.
More Related Videos
06:39Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
Published on: October 20, 2023
![Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F55858.jpg&w=3840&q=50)
10:01Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase
Published on: December 4, 2017
