Title of article :
Sub-nanomolar sensing of ionic mercury with polymeric electrospun nanofibers
Author/Authors :
Sibel Kacmaz، نويسنده , , Kadriye Ertekin، نويسنده , , Aslihan Suslu، نويسنده , , Yavuz Ergun، نويسنده , , Erdal Celik، نويسنده , , Umit Cocen، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2012
Pages :
6
From page :
547
To page :
552
Abstract :
Ethyl cellulose (EC) based electrospun nanofibers were exploited for sub-nanomolar level optical chemical sensing of ionic mercury. An azomethine ionophore was used as Hg (I) and Hg (II) sensing material. Ethyl cellulose nanofibers with varying amounts of the ionic liquid; 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIMBF4) were prepared and characterized. The nanofibers were fabricated by electrospinning technique. The offered chemosensor allow determination of mercury ions in a large linear working range between 1.0 × 10−10 and 1.0 × 10−4 mol L−1. Limit of detection was found to be 0.07 nM which makes this technique alternative to cold-vapor atomic absorption spectrometry (CV-AAS), flame emission methods and to inductively coupled plasma-mass spectrometry (ICP-MS). The electrospun nanofibers exhibited excellent sensitivity for Hg (II) with respect to the continuous thin films prepared with same composition. The observed high sensitivity can be attributed to the high surface area of the nanofibrous materials and enhanced diffusibility of the mercury ions to the ionophore.
Keywords :
Nanostructures , Optical materials , Thin films , Luminescence
Journal title :
Materials Chemistry and Physics
Serial Year :
2012
Journal title :
Materials Chemistry and Physics
Record number :
1059484
Link To Document :
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