Abstract
Silver nanoparticles were prepared by chemical reduction of acetaldehyde gas in the absence of protective gas, and Ag/FePO4 nanocomposites were synthesised by modified silver mirror reaction at a gas-liquid interface. A hydrogen peroxide (H2O2) electrochemical sensor was constructed through immobilizing Ag/FePO4 nanocomposites on gold (Au) electrode. The morphology and composition of the nanocomposites were characterized by transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS). The electrochemical investigations of the sensor indicated that it exhibited excellent analytical performance with a wide linear range from 3.0×10−5 to 1.1×10−2 mol⋅L−1 and a low detection limit of 4.7 μmol⋅L −1 at a signal-to-noise ratio of 3. Meanwhile, it also showed acceptable reproducibility and anti-interference ability. This study may provide a new method for the synthesis of highly dispersed metal nanoparticles which might be used in other related fields.
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Acknowledgements
The authors gratefully acknowledge the financial support of this project by the National Science Fund of China (No. 21275116), Specialized Research Fund for the Doctoral Program of Higher Education (No. 20126101120023), the Natural Science Fund of Shaanxi Province in China (No. 2012JM2013, 2013KJXX-25), the Fund of Shaanxi Province Educational Committee of China (No. 12JK0576), the Scientific Research Foundation of Shaanxi Provincial Key Laboratory (2010JS088, 11JS080, 12JS087, 12JS088, 13JS097, 13JS098) and the Graduate Innovation Fund of Northwest University (No. YZZ12019).
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The EDS spectrum of Ag/FePO4 nanocomposites (figure S1) is given in the supporting information available at www.ias.ac.in/chemsci.
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RAO, D., ZHANG, J. & ZHENG, J. Synthesis of silver nanoparticles-decorated FePO4 nanosphere at a gas-liquid interface for the electrochemical detection of Hydrogen peroxide. J Chem Sci 128, 839–847 (2016). https://doi.org/10.1007/s12039-016-1062-8
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DOI: https://doi.org/10.1007/s12039-016-1062-8