A facile surface-enhanced Raman scattering (SERS) detection of rhodamine 6G and crystal violet using Au nanoparticle substrates

作者：Zhang, Kuibao^*; Zeng, Tixian; Tan, Xiulan; Wu, Weidong; Tang, Yongjian; Zhang, Haibin

来源：Applied Surface Science, 2015, 347: 569-573.

DOI：10.1016/j.apsusc.2015.04.152

• SERS
• Au nanoparticles
• Deposition
• R6G
• Crystal violet

In this study, Au nanoparticle (5 nm) colloid was employed for a facile preparation of SERS substrates from three approaches: (1) original Au nanoparticles, (b) Au colloid coated 200 nm polystyrene (PS) beads, and (3) Au colloid annealed at 200-500 degrees C. Rhodamine 6G (R6G) and crystal violet were employed as the Raman active probes. The Au colloid deposited PS beads (PS@Au) exhibit intensive SERS signal for R6G detection, which is promising for crystal violet detection after being annealed at 400 degrees C. The 200 degrees C annealed Au nanoparticles demonstrate excellent combined SERS sensitivity for both R6G and crystal violet. For the original Au colloid, elevated annealing temperature from 200 degrees C to 500 degrees C decreases the SERS intensity as Au particles were coarsened gradually.

• 出版日期2015-8-30
• 单位中国工程物理研究院; 西华师范大学; 中国工程物理研究院核物理与化学研究所; 中国工程物理研究院激光聚变研究中心; 西南科技大学