PREPARATION AND CHARACTERIZATION OFAg(CORE)/SiO2(SHELL) NANOPARTICLES

Hwa Jin Cha, Young Hwan Kim, Hyun Gil Cha and Young Soo Kang ()
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Hwa Jin Cha: Department of Chemistry, Pukyong National University, Daeyeon-3-dong, Nam-gu, Busan 608 737, Korea
Young Hwan Kim: Department of Chemistry, Pukyong National University, Daeyeon-3-dong, Nam-gu, Busan 608 737, Korea
Hyun Gil Cha: Department of Chemistry, Pukyong National University, Daeyeon-3-dong, Nam-gu, Busan 608 737, Korea
Young Soo Kang: Department of Chemistry, Pukyong National University, Daeyeon-3-dong, Nam-gu, Busan 608 737, Korea

Surface Review and Letters (SRL), 2007, vol. 14, issue 04, 693-696

Abstract: Agnanoparticles were synthesized by using thermal decomposition ofAg+–oleate complex. The mean size ofAgnanoparticle was confirmed as 10 nm with transmission electron microscopy (TEM). The crystal structure and optical property ofAgnanoparticles were studied with X-ray powder diffraction (XRD) and UV–vis spectroscopy, respectively. TheAgnanoparticles were used as seeds forAg(core)/SiO2(shell) nanocomposite particles. TEM images ofAg(core)/SiO2(shell) nanocomposite particles showed that silver core was coated with 15 nm thickness ofSiO2shell. The thickness ofSiO2shells could be conveniently controlled by changing the concentration of sol–gel precursor or reaction time. The composition ofAg(core)/SiO2(shell) nanocomposite particle was investigated with energy-dispersive X-ray (EDX) spectrometer.

Keywords: Ag-SiO2; Agnanoparticle; core-shell (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0218625X07009943

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