Pollutant capturing SERS substrate: porous boron nitride microfibers with uniform silver nanoparticle decoration.
How to concentrate target molecules on the surface of a SERS substrate is a key problem in the practical application of SERS. Herein, we designed for the first time a pollutant capturing surface enhanced Raman spectroscopy (SERS) substrate, namely porous BN microfibers uniformly decorated with Ag nanoparticles, in which the BN microfibers adsorb pollutants, while the Ag nanoparticles provide SERS activity. This SERS substrate captures pollutants from an aqueous solution completely and accumulates them all on its surface without introducing noise signals. The pores of BN protect the silver particles from aggregation which makes BN/Ag a stable and recyclable SERS substrate. What's more, while the dyes are thoroughly concentrated from a diluted solution, the SERS detection limit is easily enhanced, from 10(-6) M to 10(-9) M.
Research Institute of Unconventional Petroleum and Renewable Energy, China University of Petroleum (East China), Qingdao 266580, P. R. China. dpcapple@126.com.
Pengcheng
P
Dai
Yanming
Y
Xue
Xuebin
X
Wang
Qunhong
Q
Weng
Chao
C
Zhang
Xiangfen
X
Jiang
Daiming
D
Tang
Xi
X
Wang
Naoyuki
N
Kawamoto
Yusuke
Y
Ide
Masanori
M
Mitome
Dmitri
D
Golberg
Yoshio
Y
Bando
D000327:Adsorption; D001896:Boron Compounds / Q000737:chemistry*; D004785:Environmental Pollutants / Q000032:analysis*; D053768:Metal Nanoparticles / Q000737:chemistry*; D016062:Porosity; D012834:Silver / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000379:methods*
D001896:Boron Compounds; D004785:Environmental Pollutants; C017282:boron nitride; D012834:Silver