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<p>Porous monometallic/multi-metallic nanowires are widely exploited for catalytic application due to their enhanced surface area. However, engineering mesoporous 1D plasmonic nanostructure still remains challenging due to poor morphology control. Here in we have come up a with simple wet chemical method to obtain mesoporous Au nanowire (MPG) structure, using Te nanowire as sacrificial template. This method provides a phase pure mesoporous nanowire sample with uniform and stable morphology. Raman spectroscopy is carried out using Rhodamine 6G (R6G) dye to study surface-enhanced Raman scattering (SERS) behavior of mesoporous Au nanowire substrate. A significant improvement in the SERS signal is observed compared to bare R6G, which can be attributed to the increased density of hot spots in the mesoporous nanowire. This facile, wet chemical synthesis strategy can be generalized to other noble metal-based plasmonic nanowires which can be explored for various applications including catalysis, sensors, nanodevices and for targeted drug delivery.</p> Graphical Abstract <p>Schematic showing synthesis mechanism of MPG nanowires.</p> <p></p>

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Mesoporous Au nanowire for surface enhanced Raman scattering application

  • 期刊论文

  • 发表日期：

    2025年9月2日

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  • Debadarshini Samantaray,
  • Priyadarshini Ghosh,
  • Anupam Mishra

摘要

Porous monometallic/multi-metallic nanowires are widely exploited for catalytic application due to their enhanced surface area. However, engineering mesoporous 1D plasmonic nanostructure still remains challenging due to poor morphology control. Here in we have come up a with simple wet chemical method to obtain mesoporous Au nanowire (MPG) structure, using Te nanowire as sacrificial template. This method provides a phase pure mesoporous nanowire sample with uniform and stable morphology. Raman spectroscopy is carried out using Rhodamine 6G (R6G) dye to study surface-enhanced Raman scattering (SERS) behavior of mesoporous Au nanowire substrate. A significant improvement in the SERS signal is observed compared to bare R6G, which can be attributed to the increased density of hot spots in the mesoporous nanowire. This facile, wet chemical synthesis strategy can be generalized to other noble metal-based plasmonic nanowires which can be explored for various applications including catalysis, sensors, nanodevices and for targeted drug delivery.

Graphical Abstract

Schematic showing synthesis mechanism of MPG nanowires.