Journal
NANOSCALE RESEARCH LETTERS
Volume 10, Issue -, Pages -Publisher
SPRINGEROPEN
DOI: 10.1186/s11671-015-1021-1
Keywords
Gas phase cluster beam deposition; Electrocatalytic; Nonenzyme sensors; Hydrogen peroxide detection
Funding
- National Natural Science Foundation of China [51171077]
- National Basic Research Program of China (973 Program) [2014CB932302, 2009CB930501]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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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 x 10(-7) M), high sensitivity (50.9 mu A mM(-1)), and a wide linear range (from 1.0 x 10(-6) to 6.0 x 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.
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