title: One-Pot Synthesis of Fluorescent Silicon Nanoparticles for Sensitive and Selective Determination of 2,4,6-Trinitrophenol in Aqueous Solution.
abstract: Because 2,4,6-trinitrophenol (TNP) and its analogues such as 2,4,6-trinitrotoluene (TNT) possess similar chemical structures and properties, the reliable and accurate detection of TNP from its analogues still remains a challenging task. In the present work, a selective and sensitive method based on the water-soluble silicon nanoparticles (SiNPs) for the determination of TNP was established. The SiNPs with good thermostability and excellent antiphotobleaching capability were prepared via a simple one-pot method. Compared with the synthesized time of other nanomaterials with respect to the detection of TNP, this method avoided a multistep and time-consuming synthesis procedure. Significantly, the fluorescence of the SiNPs could be remarkably quenched by TNP via an inner filter effect. A wide linear range was obtained from 0.02 to 120 μg/mL with a limit of detection of 6.7 ng/mL. The method displayed excellent selectivity toward TNP over other nitroaromatic explosives. The proposed fluorescent method was successfully applied to the analysis of TNP. Moreover, a straightforward and convenient fluorescent filter paper sensor was developed for the detection of TNP, providing a valuable platform for TNP sensing in public safety and security.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, China.|Department of Chemistry, Lanzhou University , Lanzhou 730000, China.
authors.forename: Yangxia
authors.initials: Y
authors.lastname: Han
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, China.|Department of Chemistry, Lanzhou University , Lanzhou 730000, China.
authors.forename: Yonglei
authors.initials: Y
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, China.|Department of Chemistry, Lanzhou University , Lanzhou 730000, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Feng
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, China.|Department of Chemistry, Lanzhou University , Lanzhou 730000, China.
authors.forename: Juanjuan
authors.initials: J
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, China.|Department of Chemistry, Lanzhou University , Lanzhou 730000, China.
authors.forename: Sudai
authors.initials: S
authors.lastname: Ma
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, China.|Department of Chemistry, Lanzhou University , Lanzhou 730000, China.|Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province , Lanzhou 730000, China.
authors.forename: Xingguo
authors.identifier: 0000-0002-7982-1519
authors.initials: X
authors.lastname: Chen