Journal
MICROCHIMICA ACTA
Volume 183, Issue 3, Pages 1131-1136Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-016-1743-5
Keywords
Transmission electron microscopy; X-ray diffraction; Cyclic voltammetry; Nanomaterial; Chitosan; Boehmite; Nonenzymatic sensor
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Funding
- National Science Foundation of China [21575113, 21275116]
- Specialized Research Fund for the Doctoral Program of Higher Education [20126101120023]
- Natural Science Foundation of Shaanxi Province in China [2013KJXX-25, 2012JM2013]
- Scientific Research Foundation of Shaanxi Provincial Key Laboratory [2010JS088, 11JS080, 12JS087, 13JS097, 14JS094]
- Fund of Shaanxi Province Educational Committee of China [12JK0576]
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A nanocomposite consisting of silver nanoparticles (AgNPs), AlOOH and reduced graphene oxide (rGO) was prepared where gamma-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 mu M to 4.2 mM), a sensitivity of 115.4 mu A center dot mM(-1) center dot cm(-2) and a low detection limit (1.8 mu M).
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