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The enhanced SERS effect of Ag/ZnO nanoparticles through surface hydrophobic modification

  • 发布时间:2021-03-15
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  • 关键字:Ag/ZnO nanocomposites; SA/PVP; Hydrophobic; SERS
  • 摘要:Ag/ZnO nanocomposites modified by a mixture of stearic acid (SA) and polyvinylpyrrolidone (PVP) were obtained using a heating reflux method. Fourier transform infrared spectroscopy (FT-IR) suggests that organic SA/PVP was bonded onto the surface of Ag/ZnO nanocrystals, converting the wettability property of the nanostructures from hydrophilic to hydrophobic. The modified Ag/ZnO nanostructures were confirmed as effective Raman substrates, with a 3-fold signal enhancement compared to the ordinary hydrophilic Ag/ZnO substrate for detecting Rh B molecules due to the hydrophobic condensation effect. It is expected that the modified Ag/ZnO nanoparticles have potential for SERS-based rapid detection of molecules. (C) 2016 Elsevier B.V. All rights reserved.
  • 卷号:377
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