首页|(162919)A novel Ag_2SO_3 microcrystal substrate for highly sensitive SERS sensing of multifold organic pollutants
(162919)A novel Ag_2SO_3 microcrystal substrate for highly sensitive SERS sensing of multifold organic pollutants
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NSTL
Elsevier
Toxic organic pollutants have a severe impact on the environment as well as the living organisms around the world. Surface-enhanced Raman spectroscopy (SERS) is considered to be one of the advanced sensing methods for the ultrasensitive detection of organic pollutants. Herein, a novel octahedral Ag_2SO_3 micro-crystal was synthesized using the silver-ammonia complex precipitation method for the detection of herbicide (4-chlorophenol) and synthetic dyes (sunset yellow and methylene blue dye). Ag_2SO_3 microcrystal exhibits superior sensitivity with an enhancement factor (EF) in the order of ~10~8. The large surface area with a rough octahedral morphology of Ag_2SO_3 favors the formation of abundant hotspots. The as-prepared Ag_2SO_3 also possesses excellent recyclability property via light irradiation attributed to the chemical enhancement mechanism. The capability of Ag_2SO_3 for the detection of 4-CP against interference in river water and honey was also investigated. It is assumed from the results that Ag_2SO_3 microcrystal is a promising substrate for reusable SERS applications.
Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec 3, Zhongxiao East Road, Da'an District, 106 Taipei City, Taiwan.
NSTL
Elsevier
