Highly Sensitive and Selective Pymetrozine Colorimetric Sensor Based on P-Aminobenzenesulfonic Acid Modified Ag NPs

Abstract:

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This paper reports a novel colorimetric sensor for pymetrozine based on p-aminobenzenesulfonic acid functionalized silver nanoparticles (p-ABSA-modified Ag NPs), which were characterized by IR spectroscopy, ultraviolet–visible spectroscopy (UV–vis), and transmission electron microscopy (TEM). The newly synthesized p-ABSA-modified Ag NPs are yellow in color due to the intense surface plasmon absorption band centered at 400nm. In the presence of pymetrozine, the yellow p-ABSA-modified Ag NPs solution turns to dark green, with a dramatic surface plasmon absorption band centered at 660nm. Moreover, high selectivity for pymetrozine was approved by the comparative experiments with an absorption ratio of A660/A400 more than 0.7. This highly sensitive sensor allows a direct and rapid quantitative assay of pymetrozine with a colorimetric limited detection concentration of 0.01mg/L.

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Periodical:

Edited by:

Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen

Pages:

958-961

DOI:

10.4028/www.scientific.net/AMM.117-119.958

Citation:

J. Chen et al., "Highly Sensitive and Selective Pymetrozine Colorimetric Sensor Based on P-Aminobenzenesulfonic Acid Modified Ag NPs", Applied Mechanics and Materials, Vols. 117-119, pp. 958-961, 2012

Online since:

October 2011

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$35.00

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