Scholarlink

<p>This study focused on the fabrication of an efficient noble-metal-based surface-enhanced Raman scattering (SERS)-active hetero-architecture comprising gold-core silver-shell nanoparticles (Ag@Au nanoparticles) embedded in a Langmuir–Blodgett (LB) film matrix of hexagonal boron nitride (h-BN), and the evaluation of its efficacy for the trace detection of explosives picric acid (PA) and 2,4-dinitrotoluene (DNT). The efficiency and reproducibility of the as-prepared substrate as a SERS-active platform were investigated down to ultrasensitive concentrations using Raman probe molecules. Furthermore, the SERS-active scaffold exhibited high sensitivity and selectivity in detecting PA and DNT at trace concentrations in both aqueous media and simulated debris environments. The corresponding limits of detection (LODs) were also estimated. In the present study, the as-prepared substrate demonstrates its precision and efficiency as a SERS sensing platform, which can be utilized in the future for the trace detection of chemical and biochemical compounds, in addition to its potential applications in diagnostics.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Trace detection of explosives from Langmuir–Blodgett film substrates: A SERS study

  • 期刊论文

  • 发表日期：

    2026年4月29日

查看全文
  • Chayan Kumar Mitra,
  • Joydeep Chowdhury

摘要

This study focused on the fabrication of an efficient noble-metal-based surface-enhanced Raman scattering (SERS)-active hetero-architecture comprising gold-core silver-shell nanoparticles (Ag@Au nanoparticles) embedded in a Langmuir–Blodgett (LB) film matrix of hexagonal boron nitride (h-BN), and the evaluation of its efficacy for the trace detection of explosives picric acid (PA) and 2,4-dinitrotoluene (DNT). The efficiency and reproducibility of the as-prepared substrate as a SERS-active platform were investigated down to ultrasensitive concentrations using Raman probe molecules. Furthermore, the SERS-active scaffold exhibited high sensitivity and selectivity in detecting PA and DNT at trace concentrations in both aqueous media and simulated debris environments. The corresponding limits of detection (LODs) were also estimated. In the present study, the as-prepared substrate demonstrates its precision and efficiency as a SERS sensing platform, which can be utilized in the future for the trace detection of chemical and biochemical compounds, in addition to its potential applications in diagnostics.