1. Microwave-assisted rapid synthesis of Ag nanoparticles/graphene nanosheet composites and their application for hydrogen peroxide detection.
- Author
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Liu, Sen, Tian, Jingqi, Wang, Lei, and Sun, Xuping
- Subjects
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MICROFABRICATION , *MICROWAVES , *COLLOIDAL silver , *GRAPHENE , *COMPOSITE materials , *HYDROGEN peroxide , *GAS detectors , *CHEMICAL reduction , *X-ray diffraction - Abstract
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 AgNO. 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 (HO), leading to a HO 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 μM at a signal-to-noise ratio of 3. Graphical abstract: [Figure not available: see fulltext.] [ABSTRACT FROM AUTHOR]
- Published
- 2011
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