A Controlled Method to Synthesize Hybrid In2O3/Ag Nanochains and Nanoparticles: Surface-Enhanced Raman Scattering

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• 作者：Jimin Du ; Liang Huang ; Zhiqiang Chen ; Dae Joon Kang
• 刊名：Journal of Physical Chemistry C
• 出版年：2009
• 出版时间：June 11, 2009
• 年：2009
• 卷：113
• 期：23
• 页码：9998-10004
• 全文大小：378K
• 年卷期：v.113,no.23(June 11, 2009)
• ISSN：1932-7455

文摘

Hybrid In₂O₃/Ag nanochains and nanoparticles were synthesized by the solvothermal reaction of indium nitrate and silver nitrate with or without PVP in an ethylene glycol solution at 230 °C for 20 h followed by annealing at 450 °C for 5 h. The compositions of the resulting In₂O₃/Ag nanochains and nanoparticles were confirmed by XRD, XPS, and EDS. The morphology was investigated with SEM and TEM. On the basis of the experimental results, a surfactant-induced formation mechanism was proposed to account for the growth processes. Hybrid In₂O₃/Ag nanochains and nanoparticles were confirmed by their surface-enhanced Raman scattering signal. Further, calculations were carried out with the density function theory to confirm the variation of the band structure of the In₂O₃/Ag nanocomposites compared to pure In₂O₃ compounds.