Functionalized gold nanoparticles as nanosensor for sensitive and selective detection of silver ions and silver nanoparticles by surface-enhanced Raman scattering.

نویسندگان

  • Enzhong Tan
  • Penggang Yin
  • Xiufeng Lang
  • Xiao Wang
  • Tingting You
  • Lin Guo
چکیده

We have developed a surface-enhanced Raman scattering (SERS) nanosensor firstly for Ag ions and Ag nanoparticles detection based on 2-mercaptoisonicotinic acid (2MNA)-functionalized Au nanoparticles. Ag(+) can coordinate with 2MNA resutling in a variation of its SERS spectrum, which is used as a criterion to determine Ag(+) in a solution. This sensor exhibits a detection limit no more than 25 nM and has a high selectivity against other metal ions. More importantly, it can be directly applied in real sample detection.

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عنوان ژورنال:
  • The Analyst

دوره 137 17  شماره 

صفحات  -

تاریخ انتشار 2012