Carbon-dot-based dual-emission silica nanoparticles as a ratiometric fluorescent probe for Bisphenol A.
A simple and effective strategy for designing a ratiometric fluorescent nanosensor is described in this work. A carbon dots (CDs) based dual-emission nanosensor for Bisphenol A (BPA) was prepared by coating CDs on the surface of dye-doped silica nanoparticles. The fluorescence of dual-emission silica nanoparticles was quenched in hydrochloric acid by potassium bromate (KBrO3) oxidation; BPA inhibited KBrO3oxidation, resulting in the ratiometric fluorescence response of dual-emission silica nanoparticles. Several important parameters affecting the performance of the nanosensor were investigated and optimized. The detection limit of this nanosensor was 0.80ng mL-1with a linear range from 10 to 500ng mL-1. This was applied successfully to determine BPA in the leached solution of different plastic products with satisfactory results.
School of Chemistry and Chemical Engineering, Henan University of technology, Zhengzhou, 450001, PR China. Electronic address: xianggq@haut.edu.cn.
Guo-Qiang
GQ
Xiang
School of Chemistry and Chemical Engineering, Henan University of technology, Zhengzhou, 450001, PR China.
Yue
Y
Ren
School of Chemistry and Chemical Engineering, Henan University of technology, Zhengzhou, 450001, PR China.
Yin
Y
Xia
School of Chemistry and Chemical Engineering, Henan University of technology, Zhengzhou, 450001, PR China.
Wenjie
W
Mao
School of Chemistry and Chemical Engineering, Henan University of technology, Zhengzhou, 450001, PR China.
Chao
C
Fan
School of Chemistry and Chemical Engineering, Henan University of technology, Zhengzhou, 450001, PR China.
Si-Yu
SY
Guo
School of Chemistry and Chemical Engineering, Henan University of technology, Zhengzhou, 450001, PR China.
Pan-Pan
PP
Wang
School of Chemistry and Chemical Engineering, Henan University of technology, Zhengzhou, 450001, PR China.
Deng-Hui
DH
Yang
School of Chemistry and Chemical Engineering, Henan University of technology, Zhengzhou, 450001, PR China.
Lijun
L
He
School of Chemistry and Chemical Engineering, Henan University of technology, Zhengzhou, 450001, PR China.
Xiuming
X
Jiang
Bisphenol A; Carbon dots; Ratiometric fluorescent probe; Silica nanoparticles