Urchin-like Au-nanoparticles@Ag-nanohemisphere arrays as active SERS-substrates for recognition of PCBs

RSC Advances ◽  
2014 ◽  
Vol 4 (38) ◽  
pp. 19654-19657 ◽  
Author(s):  
Haibin Tang ◽  
Guowen Meng ◽  
Qing Huang ◽  
Chuhong Zhu ◽  
Zhulin Huang ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Large Scale ◽  
Au Nanoparticles ◽  
Active Surface ◽  
Sers Substrates ◽  
Highly Active ◽  
Surface Enhanced ◽  
Nanodot Arrays ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Large-scale ordered urchin-like Au-nanoparticles decorated Ag-nanohemisphere nanodot arrays show highly active surface-enhanced Raman scattering effect for rapid recognition of PCB-3.

scholarly journals Large-Scale Fabrication of Ultrasensitive and Uniform Surface-Enhanced Raman Scattering Substrates for the Trace Detection of Pesticides

Nanomaterials ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 520 ◽  
Author(s):  
Jia Zhu ◽  
Guanzhou Lin ◽  
Meizhang Wu ◽  
Zhuojie Chen ◽  
Peimin Lu ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Large Scale ◽  
Capillary Flow ◽  
Surface Enhanced Raman Scattering ◽  
Ag Nps ◽  
Uniform Size ◽  
Sers Substrates ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Technology transfer from laboratory into practical application needs to meet the demands of economic viability and operational simplicity. This paper reports a simple and convenient strategy to fabricate large-scale and ultrasensitive surface-enhanced Raman scattering (SERS) substrates. In this strategy, no toxic chemicals or sophisticated instruments are required to fabricate the SERS substrates. On one hand, Ag nanoparticles (NPs) with relatively uniform size were synthesized using the modified Tollens method, which employs an ultra-low concentration of Ag+ and excessive amounts of glucose as a reducing agent. On the other hand, when a drop of the colloidal Ag NPs dries on a horizontal solid surface, the droplet becomes ropy, turns into a layered structure under gravity, and hardens. During evaporation, capillary flow was burdened by viscidity resistance from the ropy glucose solution. Thus, the coffee-ring effect is eliminated, leading to a uniform deposition of Ag NPs. With this method, flat Ag NPs-based SERS active films were formed in array-well plates defined by hole-shaped polydimethylsiloxane (PDMS) structures bonded on glass substrates, which were made for convenient detection. The strong SERS activity of these substrates allowed us to reach detection limits down to 10−14 M of Rhodamine 6 G and 10−10 M of thiram (pesticide).

Tailored polymer–metal fractal nanocomposites: an approach to highly active surface enhanced Raman scattering substrates

2009 ◽  
Vol 20 (32) ◽  
pp. 325705 ◽  
Author(s):  
Abhijit Biswas ◽  
Ilker S Bayer ◽  
Daminda H Dahanayaka ◽  
Lloyd A Bumm ◽  
Zhongrui Li ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Active Surface ◽  
Surface Enhanced Raman Scattering ◽  
Highly Active ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Polymer Metal ◽  
Enhanced Raman Scattering

scholarly journals Large-scale preparation of flexible and reusable surface-enhanced Raman scattering platform based on electrospinning AgNPs/PCL nanofiber membrane

RSC Advances ◽  
2017 ◽  
Vol 7 (75) ◽  
pp. 47373-47379 ◽  
Author(s):  
Jihua Shi ◽  
Tingting You ◽  
Yukun Gao ◽  
Xiu Liang ◽  
Chenling Li ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Ag Nanoparticles ◽  
Large Scale ◽  
Nanofiber Membrane ◽  
Sers Substrates ◽  
Large Scale Preparation ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Scale Preparation ◽  
Enhanced Raman Scattering

A flexible and reusable SERS substrates were prepared by electrospinning Ag nanoparticles in reversed micelle into poly(ε-caprolactone) nanofibers.

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