Vol 9: Performance-Enhancing Methods for Au Film over Nanosphere Surface-Enhanced Raman Scattering Substrate and Melamine Detection Application.Reportar como inadecuado



 Vol 9: Performance-Enhancing Methods for Au Film over Nanosphere Surface-Enhanced Raman Scattering Substrate and Melamine Detection Application.


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This article is from PLoS ONE, volume 9.AbstractA new high-performance surface-enhanced Raman scattering SERS substrate with extremely high SERS activity was produced. This SERS substrate combines the advantages of Au film over nanosphere AuFON substrate and Ag nanoparticles AgNPs. A three order enhancement of SERS was observed when Rhodamine 6G R6G was used as a probe molecule to compare the SERS effects of the new substrate and commonly used AuFON substrate. These new SERS substrates can detect R6G down to 1 nM. The new substrate was also utilized to detect melamine, and the limit of detection LOD is 1 ppb. A linear relationship was also observed between the SERS intensity at Raman peak 682 cm−1 and the logarithm of melamine concentrations ranging from 10 ppm to 1 ppb. This ultrasensitive SERS substrate is a promising tool for detecting trace chemical molecules because of its simple and effective fabrication procedure, high sensitivity and high reproducibility of the SERS effect.



Autor: Wang, Jun Feng; Wu, Xue Zhong; Xiao, Rui; Dong, Pei Tao; Wang, Chao Guang

Fuente: https://archive.org/







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