Application of Polypyrrole-Chitosan Layer for Detection of Zn (II) and Ni (II) in Aqueous Solutions Using Surface Plasmon Resonance

Abstract

In this study, a polypyrrole-chitosan layer was applied to detect zinc and nickel ions in aqueous solution using surface plasmon resonance. The resonance angle shift was found to monitor the binding interaction between ions and the polymer film. The polypyrrole-chitosan film was coated on the gold layer with an electrochemical deposition method. The Langmuir model was compared with the Freundlich model to explain the binding. Consequently, the Langmuir model was fitted with experimental data better than the Freundlich equation, and the detection limit was 0.01 ppm.

Polypyrrole-Chitosan-CaFe2O4 Layer Sensor for Detection of Anionic and Cationic Dye Using Surface Plasmon Resonance

“…Fresnel's theory in the matrix form for multilayer was used [39] to analyze SPR signal using computer program. The root square method was considered to find the resonance angle as follows:…”

“…The refractive index of j th layer is n j = n Rj − ik I j (n Rj and k I j are the real and imaginary parts of layer), and the reflectivity is R = r × r [39][40][41].…”

Development of Surface Plasmon Resonance Spectroscopy for Metal Ion Detection

“…Meanwhile, Sadrolhosseini et al used PPy-CHI to detect Zn(II) and Ni(II) in aqueous solutions. (41) They used an electrochemical method to coat the gold layer with PPy-CHI. The sensitivity of the SPR-based sensor with PPy-CHI as a sensing layer was about 0.01 ppm.…”

Silver Nanoparticles Encapsulated Polyacrylamide Nanospheres: An Efficient DNA Binding Nanomatrix

“…However these systems have shown limited applicability due to less surface area, high cost of production, and more time consumed [4]. Simultaneous discovery of nanoparticles and their broad range of applicability played a revolutionary role in the various research areas like theraputics, diagnostics, and thrognostics [6][7][8][9][10][11][12]. With time, different metallic nanoparticles like gold, silver, iron, and platinum have been developed and used for various applications [6][7][8][9][10][11][12][13].…”

“…Simultaneous discovery of nanoparticles and their broad range of applicability played a revolutionary role in the various research areas like theraputics, diagnostics, and thrognostics [6][7][8][9][10][11][12]. With time, different metallic nanoparticles like gold, silver, iron, and platinum have been developed and used for various applications [6][7][8][9][10][11][12][13]. Among the various metallic nanoparticles, silver nanoparticles display some unique properties like chemical stability, excellent electrical conductivity and antibacteriostatic effects [14,15].…”