Abstract
Developing facile and environmentally friendly synthesis method to fabricate effective platforms for surface-enhanced Raman scattering (SERS) draws much attention in recent years. Herein, a fast and green method is developed to prepare silver nanoparticles/reduced graphene oxide (Ag NPs/rGO) composite, which exhibits favorable SERS activity in detecting bacteria such as Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). With high-loading and well-dispersed Ag NPs (average size of ~63 nm), the Ag NPs/rGO composite fabricated at a mass ratio of 3:1 between AgNO3 and GO presents the best SERS performance, which may be due to the optimal synergistic effect of electromagnetic enhancement originated from Ag NPs and chemical enhancement originated from rGO sheets. Furthermore, the detection sensitivity of the Ag NPs/rGO composite lowers to 1 × 105 CFU/cm3.
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This work was supported by National Science Foundation of China (51572114), the Fundamental Research Funds for the Central Universities (No. 30920140122003) as well as the Senior Talent Foundation of Jiangsu University (15JDG078).
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Li, Y., Yang, J., Zhong, T. et al. Fast and green synthesis of silver nanoparticles/reduced graphene oxide composite as efficient surface-enhanced Raman scattering substrate for bacteria detection. Monatsh Chem 148, 1155–1163 (2017). https://doi.org/10.1007/s00706-017-1990-0
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DOI: https://doi.org/10.1007/s00706-017-1990-0