Journal
NANOTECHNOLOGY
Volume 30, Issue 27, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/ab12fb
Keywords
SERS; phosphorene; nanocomposites; template growth
Funding
- Shenzhen Science and Technology Research Funding [JCYJ20160608141 439330]
- Leading Talents of Guangdong Province Program [00201520]
- Shenzhen Peacock Program [KQTD 2016030111500545]
- City University of Hong Kong Strategic Research Grant [7005105]
- Hong Kong Research Grants Council General Research Funds [CityU 11205617]
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We report template growth and dense packing of noble metallic nanoparticles (NPs) on few-layer phosphorene for sensitive surface-enhanced Raman scattering (SERS) detection. Phosphorene obtained by electrochemical exfoliation serves as both the template and reductant in the fabrication of noble metallic NPs which are dispersed on phosphorene without aggregation or pile-up. The BP/Ag/Au and BP/Au/Ag nanocomposites with a nanogap structure exhibit excellent SERS sensitivity and reproducibility with respect to Rhodamine 6G. The BP/Au/Ag nanocomposite is further utilized as the SERS substrate for the detection of two fungicides, thiabendazole and thiram, and detection limits of 10(-7) and 10(-8) M are achieved. Template growth of Au/Ag nanocomposites is demonstrated to be a green strategy for the fabrication of SERS substrates and has large potential in applications such as pesticide detection.
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