title: Pd nanoparticle-modified electrodes for nonenzymatic hydrogen peroxide detection.
abstract: A hydrogen peroxide (H2O2) sensor based on Pd nanoparticles (NPs) and glassy carbon electrodes (GCEs) is fabricated. Pd NPs are deposited on GCEs by using a gas phase cluster beam deposition technique. The NP-deposited electrodes show enhanced electrocatalytic activity in reduction of H2O2. The electrode with an optimized NP coverage of 85 % has a high selective and stable nonenzymatic sensing ability of H2O2 with a low detection limit (3.4 × 10(-7) M), high sensitivity (50.9 μA mM(-1)), and a wide linear range (from 1.0 × 10(-6) to 6.0 × 10(-3) M). The reduction peak potential of the electrode is close to -0.12 V, which enables high selective amperometric detection of H2O2 at a low applied potential.
authors.affiliation: National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, Nanjing, 210093, China, wjphoebe@163.com.
authors.forename: Jue
authors.initials: J
authors.lastname: Wang
authors.forename: Xue-Jiao
authors.initials: XJ
authors.lastname: Chen
authors.forename: Kai-Ming
authors.initials: KM
authors.lastname: Liao
authors.forename: Guang-Hou
authors.initials: GH
authors.lastname: Wang
authors.forename: Min
authors.initials: M
authors.lastname: Han