TY  - JOUR
ID  - SisLab3690
UR  - https://js.vnu.edu.vn/MaP/
A1  - Nguyen, Kien Cuong
Y1  - 2019///
N2  - Chemical residues at lower than 10-4 M conc. has not usually been detected by a common Raman spectrometer. However, they can be detected at the lower 10-4 M conc., even up to of 10-9 M conc. when their deposition on a surface-enhanced Raman scattering (SERS) surface. In this paper, a SERS surface was prepared gold nano-particles (AuNPs) of 5nm diameter, synthesized from the HAuCl4 precursor and then was arranged as a SERS/AuNP- layer of 25nm in thickness. A Rhodamine 6G (Rh6G) dye-indicator, chosen as the SERS-probe molecules to detect the enhanced Raman amplitude, was diluted at different solution, ranging from 10-4  M to 10-9M conc.  With the same 10-4 M conc. of Rh6G dye, typical Raman peaks of the Rh6G deposited on the AuNPs surface can be clearly detected while these peaks of Rh6G on a blank glass surface could not be seen. Even if, the Rh6G solution on the AuNP surface was diluted up to 10-9M conc. its typical peaks can be still detected clearly. The significant enhancement of the surface Raman signals at the different conc. of the Rh6G solution, deposited on AuNP surface, will be later discussed in the paper.
PB  - Vietnam National University Hanoi
JF  - VNU Journal of Science: Mathematics ? Physics
KW  - Gold nano-particles (AuNPs)
KW  -  surface-enhanced Raman scattering (SERS)
KW  -  Rhodamine 6G (Rh6G).
SN  - 0866-8612
TI  - Raman Signal Enhancement of Rhodamine 6G on Gold Nanoparticles for Detecting Chemical Residues
AV  - public
ER  -