Journal
JOURNAL OF MATERIALS SCIENCE
Volume 51, Issue 16, Pages 7536-7544Publisher
SPRINGER
DOI: 10.1007/s10853-016-0033-2
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Funding
- National Research Foundation of Korea (NRF) Grant - Ministry of Science, ICT, and Future Planning, Korea {Acceleration Research Program} [NRF-2014 R1A2A111 054584]
- National Research Foundation of Korea (NRF) Grant - Ministry of Science, ICT, and Future Planning, Korea {Pioneer Research Center Program} [NRF-2010-0019308/2010-0019482]
- National Research Foundation of Korea (NRF) Grant - Ministry of Science, ICT, and Future Planning, Korea {Brain Korea 21 Plus Program} [21A2013800002]
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Polypyrrole-silver (PPy-Ag) nanocomposites with various silver contents have been synthesized via a kinetically favorable one-step chemical oxidative polymerization process. The oxidant, ammonium persulfate, was used to oxidize pyrrole monomer for growing chains of PPy. And AgNO3 was used as a precursor for metallic silver nanoparticles. The detailed characterization techniques, UV-Vis-NIR, fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction spectroscopy, field-emission scanning electron microscopy, and transmission electron microscopy (TEM), have been used to reveal electronic environment, structure, and morphology of composites as well as as-synthesized PPy. The synthesis environment prior to polymerization has also been investigated by absorption spectroscopy. The TEM images of PPy-Ag nanocomposites reveal that silver nanoparticles are deeply embedded into the polymer matrix in addition to surface adsorption. It is observed that the size distribution of inorganic nanoparticles (ca. 4-10 nm, depending on the metal ion concentrations) as well as structural morphology is altered by the initial concentrations of silver ions.
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