期刊
ACS APPLIED MATERIALS & INTERFACES
卷 3, 期 7, 页码 2557-2563出版社
AMER CHEMICAL SOC
DOI: 10.1021/am200396n
关键词
ZnO nanorods; SERS; SERS substrates; photodegradation; organic pollutants
资金
- Fondazione Cariplo
- Italian Ministry of the Education, University and Scientific Research (MIUR)
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 x 10(-4) to 1 x 10(-12) M), with good reproducibility. The photocatalytic properties of Au-ZnO NRs were exploited to recycle these substrates through LW-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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