A simple enzyme-free SERS sensor for the rapid and sensitive detection of hydrogen peroxide in food

The Analyst ◽  
2020 ◽  
Vol 145 (2) ◽  
pp. 607-612 ◽  
Author(s):  
Yangyang Li ◽  
Yuqiu Wang ◽  
Cuicui Fu ◽  
Yan Wu ◽  
Haiyan Cao ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Silver Nanoparticles ◽  
Raman Scattering ◽  
Glass Substrate ◽  
Sensitive Detection ◽  
Ag Nps ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
First Time

A simple enzyme-free method based on surface-enhanced Raman scattering (SERS) was developed for the first time to detect H2O2 in food by etching a self-assembled film of silver nanoparticles (Ag NPs) on a glass substrate.

A new type of surface-enhanced Raman scattering sensor for the enantioselective recognition of d/l-cysteine and d/l-asparagine based on a helically arranged Ag NPs@homochiral MOF

2016 ◽  
Vol 52 (31) ◽  
pp. 5432-5435 ◽  
Author(s):  
Xuan Kuang ◽  
Sujuan Ye ◽  
Xiangyuan Li ◽  
Yu Ma ◽  
Caiyun Zhang ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Helical Structure ◽  
Ag Nps ◽  
Enantioselective Recognition ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
New Type ◽  
Enhanced Raman Scattering ◽  
First Time ◽  
Efficient Recognition

For the first time, we report the synthesis of Ag NPs arranged in a helical structure on a chiral MOF. This material can serve as a new type of SERS sensor for the efficient recognition of enantiomers.

SILVER NANOPARTICLES FILMS DEPOSITED ON AAO TEMPLATES BY THERMAL EVAPORATION FOR SURFACE-ENHANCED RAMAN SCATTERING OF R6G

NANO ◽  
2012 ◽  
Vol 07 (06) ◽  
pp. 1250048 ◽  
Author(s):  
JIANPING LIN ◽  
HUIQING LAN ◽  
WEIFENG ZHENG ◽  
YAN QU ◽  
FACHUN LAI
Keyword(s):  
Silver Nanoparticles ◽  
Raman Scattering ◽  
Thermal Evaporation ◽  
Particle Diameter ◽  
Surface Enhanced Raman Scattering ◽  
Average Particle ◽  
Ag Nps ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Silver nanoparticles (NPs) films with different nominal thicknesses were deposited on the anodic aluminum oxide (AAO) templates with pore diameter about 200 nm by thermal evaporation. These NPs films were used as the surface enhanced Raman scattering (SERS) active substrates. The microstructure and surface morphology of the films were studied by X-ray diffraction and scanning electron microscopy, respectively. The SERS activity of the films was investigated by Raman scattering of adsorbed rhodamine 6G (R6G) at different concentrations. The results revealed that the average diameter of Ag NPs in different samples is 58 nm, 75 nm, 93 nm and 108 nm, respectively. Ag NPs film on AAO template is very suitable as a SERS active substrate and can detect R6G molecules with a concentration of 10-8 M. The intensity of the SERS spectra is related to both the Ag NPs size and interparticle distance. The sample with an average particle diameter of 93 nm has the highest SERS enhancement factor (1.3 × 106).

Sign in / Sign up

Export Citation Format

Share Document