Masking agent-free and channel-switch-mode simultaneous sensing of Fe(3+) and Hg(2+) using dual-excitation graphene quantum dots.
A novel channel-switch-mode strategy for simultaneous sensing of Fe(3+) and Hg(2+) is developed with dual-excitation single-emission graphene quantum dots (GQDs). By utilizing the dual-channel fluorescence response performance of GQDs, this strategy achieved a facile, low-cost, masking agent-free, quantitative and selective dual-ion assay even in mixed ion samples and practical water samples.
State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha 410082, China. kmwang@hnu.edu.cn.
Fengzhou
F
Xu
Hui
H
Shi
Xiaoxiao
X
He
Kemin
K
Wang
Dinggeng
D
He
Lv'an
L
Yan
Xiaosheng
X
Ye
Jinlu
J
Tang
Jingfang
J
Shangguan
Lan
L
Luo
D002623:Chemistry Techniques, Analytical / Q000295:instrumentation*; D006108:Graphite / Q000737:chemistry*; D007501:Iron / Q000032:analysis* / Q000737:chemistry; D008628:Mercury / Q000032:analysis* / Q000737:chemistry; D045663:Quantum Dots / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013997:Time Factors
D006108:Graphite; D007501:Iron; D008628:Mercury