Abstract
A nanocomposite consisting of silver nanoparticles (AgNPs), AlOOH and reduced graphene oxide (rGO) was prepared where γ-AlOOH was employed to modify rGO to obtain a platform for the growth of dispersed AgNPs. A glassy carbon electrode was modified with the nanocomposite in a chitosan matrix to obtain a nonenzymatic sensor for H2O2 with a working voltage of typically -0.3 V (vs. Ag/AgCl). The morphology and composition of the nanocomposites were characterized by transmission electron microscopy, Raman spectra, X-ray spectrometer and X-ray diffraction. Cyclic voltammetry revealed a wide linear range (5.0 μM to 4.2 mM), a sensitivity of 115.4 μA · mM−1 · cm−2 and a low detection limit (1.8 μM).
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Acknowledgments
The authors gratefully acknowledge the financial support of this project by the National Science Foundation of China (21575113, 21275116), Specialized Research Fund for the Doctoral Program of Higher Education (No. 20126101120023), the Natural Science Foundation of Shaanxi Province in China (2013KJXX-25 and 2012JM2013), the Scientific Research Foundation of Shaanxi Provincial Key Laboratory (2010JS088, 11JS080, 12JS087, 13JS097, 14JS094) and the Fund of Shaanxi Province Educational Committee of China (12JK0576).
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Yang, Z., Qi, C., Zheng, X. et al. Sensing hydrogen peroxide with a glassy carbon electrode modified with silver nanoparticles, AlOOH and reduced graphene oxide. Microchim Acta 183, 1131–1136 (2016). https://doi.org/10.1007/s00604-016-1743-5
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DOI: https://doi.org/10.1007/s00604-016-1743-5