AbstractThe authors describe a Surface enhanced Raman spectroscopy (SERS)-based method for the detection of gaseous toluene at different temperature regimes using 3D ruffled silver SERS substrates and a commercially available handheld Raman system equipped with a 785 nm laser. The 3D silver SERS substrates were synthesized via electroless deposition of silver on the ruffled sandpaper and HF-etched silicon wafers. The morphological characterization of the silver SERS substrates was carried out by atomic force microscopy and scanning electron microscopy. UV-Vis spectroscopy absorption spectra of the silver nanostructures showed plasmonic peaks at 522 nm and 731 nm. Toluene vapors were collected with a syringe at ambient temperature and at 100 °C, while SERS detection was always performed at room temperature. Toluene detection was based on the measurement of the Raman bands at 787 cm−1 and 1003 cm−1 (in the fingerprint region). The method allow gaseous toluene to be detected at its vapor concentrations of 522 ppm (mg/L), 261 ppm (mg/L) and 26 ppm (mg/L). Graphical abstractSchematic presentation of an original method for the detection of toluene vapors by SERS technique. The collection of toluene vapors was carried out at room and at high temperatures. The vapors were transferred to methanol by bubbling. The SERS measurements were carried out at room temperature.

中文翻译：

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通过使用褶皱银纳米层作为基材，在环境和高温下基于 SERS 监测甲苯蒸汽

摘要作者描述了一种基于表面增强拉曼光谱 (SERS) 的方法，用于使用 3D 褶皱银 SERS 基板和配备 785 nm 激光器的市售手持拉曼系统在不同温度范围内检测气态甲苯。3D 银 SERS 基板是通过在褶皱砂纸和 HF 蚀刻的硅片上无电沉积银合成的。通过原子力显微镜和扫描电子显微镜对银 SERS 基底进行形态表征。银纳米结构的紫外-可见光谱吸收光谱在 522 nm 和 731 nm 处显示等离子体峰。在环境温度和 100 °C 下用注射器收集甲苯蒸气，而 SERS 检测始终在室温下进行。甲苯检测基于对 787 cm-1 和 1003 cm-1（在指纹区域）的拉曼谱带的测量。该方法允许检测蒸气浓度为 522 ppm (mg/L)、261 ppm (mg/L) 和 26 ppm (mg/L) 的气态甲苯。通过 SERS 技术检测甲苯蒸气的原始方法的图形摘要示意图。甲苯蒸气的收集在室温和高温下进行。通过鼓泡将蒸气转移到甲醇中。SERS 测量在室温下进行。通过 SERS 技术检测甲苯蒸气的原始方法的图形摘要示意图。甲苯蒸气的收集在室温和高温下进行。通过鼓泡将蒸气转移到甲醇中。SERS 测量在室温下进行。通过 SERS 技术检测甲苯蒸气的原始方法的图形摘要示意图。甲苯蒸气的收集在室温和高温下进行。通过鼓泡将蒸气转移到甲醇中。SERS 测量在室温下进行。