Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 754, Issue -, Pages 138-142Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2015.07.022
Keywords
gamma-AlOOH; Silver nanoparticles; Hydrogen peroxide; Nonenzymatic sensor
Categories
Funding
- National Natural Science Foundation of China [21275116]
- Specialized Research Fund for the Doctoral Program of Higher Education [20126101120023]
- Natural Science Fund of Shaanxi Province in China [2012JM2013, 2013KJXX-25]
- Shaanxi Province Educational Committee of China [12JK0576]
- Scientific Research Foundation of Shaanxi Provincial Key Laboratory [2010JS088, 11JS080, 12JS087, 12JS088, 13JS097, 13JS098]
- Graduate Innovation Fund of Northwest University [YZZ12019]
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Ag/gamma W-AlOOH nanocomposites were synthesized by employing gamma-AlOOH as the support for Ag catalyst and then the nanocomposites were used for fabricating nonenzymatic H2O2 sensor. Transmission electron microscopy and scanning electron microscope observations reveal that large numbers of silver nanoparticles were well distributed on the surface of gamma-AlOOH and the electrochemical investigations indicate that the nanocomposites possess an excellent performance toward H2O2. The linear range is estimated to be from 5.0 mu M to 9.0 mM with a low detection limit of 1.1 mu M (S/N = 3), a sensitivity of 64.4 mu A mM(-1) cm(-2) and a response time of 3 S. These results indicated that Ag/gamma-AlOOH nanocomposites were the promising electrocatalytic material for constructing sensors. (C) 2015 Elsevier B.V. All rights reserved.
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