Journal
JOURNAL OF NANOPARTICLE RESEARCH
Volume 13, Issue 10, Pages 4539-4548Publisher
SPRINGER
DOI: 10.1007/s11051-011-0410-3
Keywords
Graphene nanosheet; Microwave; Ag nanoparticle; Hydrogen peroxide detection; Sensors
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Funding
- National Basic Research Program of China [2011CB935800]
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Ag nanoparticles/graphene nanosheet (AgNPs/GN) composites have been rapidly prepared by a one-pot microwave-assisted reduction method, carried out by microwave irradiation of a N,N-dimethylformamide (DMF) solution of graphene oxide (GO) and AgNO3. Several analytical techniques including UV-vis spectroscopy, FT-IR spectroscopy, Raman spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) have been used to characterize the resulting AgNPs/GN composites. It suggests that such composites exhibit good catalytic activity toward reduction of hydrogen peroxide (H2O2), leading to a H2O2 sensor with a fast amperometric response time of less than 2 s. The linear detection range is estimated to be from 0.1 to 100 mM (r = 0.999), and the detection limit is estimated to be 0.5 mu M at a signal-to-noise ratio of 3.
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