One-Pot Synthesis of Fluorescent Silicon Nanoparticles for Sensitive and Selective Determination of 2,4,6-Trinitrophenol in Aqueous Solution

Yangxia Han; Yonglei Chen; Jie Feng; Juanjuan Liu; Sudai Ma; Xingguo Chen

doi:10.1021/acs.analchem.6b04509

One-Pot Synthesis of Fluorescent Silicon Nanoparticles for Sensitive and Selective Determination of 2,4,6-Trinitrophenol in Aqueous Solution

Anal Chem. 2017 Mar 7;89(5):3001-3008. doi: 10.1021/acs.analchem.6b04509. Epub 2017 Feb 21.

Authors

Yangxia Han^{1

2}, Yonglei Chen^{1

2}, Jie Feng^{1

2}, Juanjuan Liu^{1

2}, Sudai Ma^{1

2}, Xingguo Chen^{1

2

3}

Affiliations

¹ State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, China.
² Department of Chemistry, Lanzhou University , Lanzhou 730000, China.
³ Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province , Lanzhou 730000, China.

PMID: 28192949
DOI: 10.1021/acs.analchem.6b04509

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.

Publication types

Research Support, Non-U.S. Gov't