Economical, green synthesis of fluorescent carbon nanoparticles and their use as probes for sensitive and selective detection of mercury(II) ions.
The present article reports on a simple, economical, and green preparative strategy toward water-soluble, fluorescent carbon nanoparticles (CPs) with a quantum yield of approximately 6.9% by hydrothermal process using low cost wastes of pomelo peel as a carbon source for the first time. We further explore the use of such CPs as probes for a fluorescent Hg(2+) detection application, which is based on Hg(2+)-induced fluorescence quenching of CPs. This sensing system exhibits excellent sensitivity and selectivity toward Hg(2+), and a detection limit as low as 0.23 nM is achieved. The practical use of this system for Hg(2+) determination in lake water samples is also demonstrated successfully.
State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, P. R. China.
Wenbo
W
Lu
Xiaoyun
X
Qin
Sen
S
Liu
Guohui
G
Chang
Yingwei
Y
Zhang
Yonglan
Y
Luo
Abdullah M
AM
Asiri
Abdulrahman O
AO
Al-Youbi
Xuping
X
Sun
D002244:Carbon / Q000737:chemistry*; D004785:Environmental Pollutants / Q000032:analysis / Q000737:chemistry; D005456:Fluorescent Dyes / Q000138:chemical synthesis* / Q000737:chemistry*; D055772:Green Chemistry Technology / Q000191:economics* / Q000379:methods*; D060106:Lakes / Q000737:chemistry; D008628:Mercury / Q000032:analysis* / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry*; D014867:Water / Q000737:chemistry
D004785:Environmental Pollutants; D005456:Fluorescent Dyes; D014867:Water; D002244:Carbon; D008628:Mercury