纳米棒
材料科学
再现性
热液循环
纳米技术
光催化
亚甲蓝
溅射
沉积(地质)
化学工程
薄膜
催化作用
色谱法
有机化学
古生物学
化学
沉积物
工程类
生物
作者
Godhuli Sinha,Laura E. Depero,Ivano Alessandri
摘要
Vertically aligned Au-coated ZnO nanorods (Au-ZnO NRs) were investigated as cheap, efficient and recyclable SERS-active substrates. The ZnO NRs were prepared through a simple, low-temperature hydrothermal route and made SERS-active through deposition of gold nanoislands by sputtering at room temperature. Optimized samples were able to detect methylene blue over a wide range of low concentrations (from 1 × 10–4 to 1 × 10–12 M), with good reproducibility. The photocatalytic properties of Au-ZnO NRs were exploited to recycle these substrates through UV-assisted cleaning. The experimental results showed that these substrates are characterized by high reproducibility and long shelf life, which make them promising as SERS platforms for multiple detection of different molecular species.
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