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<p>Surface-enhanced Raman scattering (SERS) has emerged as a reliable molecular spectroscopic technique for its highly sensitive label-free detection and molecular finger printing technique capabilities. Herein, we report gold and silver nanoparticles (AgNPs-AuNPs) decorated on whatman Grade No.1 filter paper as a simple yet effective and flexible SERS substrate. Prior to the experimental investigation, the synthesized Ag/AuNPs treated filter paper has been characterized by field emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDX), UV-visible spectroscopy, Fourier transform infrared spectroscopy (FTIR) analysis. Initially performance of the substrate has been tested using two dyes namely -Malachite green (MG) and Rhodamine 6G(R6G) is reported. The designed SERS substrate shows limit of detection (LoD) ~ 0.449µM for MG. With the proposed SERS platform, a maximum of 9.4% relative standard deviation (RSD) was observed. 4-Nitrophenol in soil and lake water was successfully detected using the SERS substrate highlights its practical applicability in real life samples. The LoD of 4-nitrophenol achieved using the developed SERS platform was 0.8µM and 2.27 µM in lake water and soil samples.</p>

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Ag/Au nano-particles deposited on grade-1 whatman filter paper as a simple SERS platform for sensing of 4-nitrophenol in soil and lake water

  • 期刊论文

  • 发表日期：

    2026年6月19日

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  • Nituraj Changmai,
  • Dipjyoti Sarma,
  • Pabitra Nath

摘要

Surface-enhanced Raman scattering (SERS) has emerged as a reliable molecular spectroscopic technique for its highly sensitive label-free detection and molecular finger printing technique capabilities. Herein, we report gold and silver nanoparticles (AgNPs-AuNPs) decorated on whatman Grade No.1 filter paper as a simple yet effective and flexible SERS substrate. Prior to the experimental investigation, the synthesized Ag/AuNPs treated filter paper has been characterized by field emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDX), UV-visible spectroscopy, Fourier transform infrared spectroscopy (FTIR) analysis. Initially performance of the substrate has been tested using two dyes namely -Malachite green (MG) and Rhodamine 6G(R6G) is reported. The designed SERS substrate shows limit of detection (LoD) ~ 0.449µM for MG. With the proposed SERS platform, a maximum of 9.4% relative standard deviation (RSD) was observed. 4-Nitrophenol in soil and lake water was successfully detected using the SERS substrate highlights its practical applicability in real life samples. The LoD of 4-nitrophenol achieved using the developed SERS platform was 0.8µM and 2.27 µM in lake water and soil samples.