Development of Surface Plasmon Resonance Spectroscopy for Metal Ion Detection

Daniyal, ‬Wan Mohd Ebtisyam Mustaqim Mohd; Saleviter, Silvan; Fen, Yap Wing

doi:10.18494/sam.2018.1952

Cited by 34 publications

(24 citation statements)

References 62 publications

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“…This shift was contributed by the attachment of the metal ion onto the active layer thin film [36][37][38]. The attachment of the metal ion with the active layer changes the refractive index of the active layer hence causing a shift in the resonance angle [39][40][41].…”

Section: Journal Of Nanomaterialsmentioning

confidence: 99%

Structural and Optical Studies of Cadmium Sulfide Quantum Dot-Graphene Oxide-Chitosan Nanocomposite Thin Film as a Novel SPR Spectroscopy Active Layer

Saleviter

Fen

Omar

et al. 2018

Journal of Nanomaterials

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The aim of this study is to prepare and study the cadmium sulfide quantum dot-graphene oxide-chitosan composite thin film. This composite material was coated on top of the gold layer by a spin-coating technique as a modification of the active layer for metal ion sensing using surface plasmon resonance spectroscopy (SPR). The composite material was prepared using a simple wet solution mixing method. An atomic force microscope (AFM) shows that the addition of GO increased the roughness of the composite thin film and the presence of CdS QDs cannot be observed as the size of the QDs are very small. The morphology of the nanocomposite material was observed using transmission electron microscopy (TEM). From the TEM images, it is observed that the materials mixed to form a nanocomposite material. The optical properties of the thin film via UV-Vis spectroscopy shows that the absorbance peaks of the thin film can be observed around 220 nm to near 300 nm, and the band gaps are around 4.0 eV. Lastly, the prepared thin film was tested as an active layer for metal ion detection via surface plasmon resonance (SPR), where the angle shift was observed to show that the prepared thin film has high potential for Co2+ ion detection.

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Section: Journal Of Nanomaterialsmentioning

confidence: 99%

Structural and Optical Studies of Cadmium Sulfide Quantum Dot-Graphene Oxide-Chitosan Nanocomposite Thin Film as a Novel SPR Spectroscopy Active Layer

Saleviter

Fen

Omar

et al. 2018

Journal of Nanomaterials

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“…This changes the resonance angle, which is the angle with minimum reflectance. (8)(9)(10)(11)(12)(13) Over the past decade, SPR has been receiving continuous attention from the scientific community owing to its advantages and for its use in the analysis of binding properties. (14)(15)(16) As well as label-free measurement, SPR sensors also have the advantages of a simple preparation process, cost efficiency, high sensitivity, and fast and real-time analysis.…”

Section: Introductionmentioning

confidence: 99%

Label-free Binding Analysis of 4-(2-Pyridylazo)-resorcinol-based Composite Layer with Cobalt Ion Using Surface Plasmon Resonance Optical Sensor

Saleviter¹,

Fen²,

Omar³

et al. 2020

Sensors and Materials

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Label-free measurements of small-molecule binding interactions are of high interest to researchers across multiple scientific disciplines. Label-free optical sensors based on surface plasmon resonance (SPR) have been widely used for detecting various targets including toxic heavy metals in solutions. In this research, an SPR optical sensor enhanced with a 4-(2-pyridylazo)-resorcinol (PAR)-based composite layer was employed for the detection of the cobalt ion (Co 2+). A binding analysis study was conducted by monitoring the interaction between Co 2+ and the sensing layer thin film. In our experiment, there were no changes in SPR angle for a gold layer in contact with Co 2+ of different concentrations, whereas the enhanced SPR sensor produced a maximum SPR angle shift of 0.328°. From the relationship between the angle shift and the concentration of Co 2+ , the sensor had a sensitivity of 0.2375° ppm −1 for concentrations of less than 1 ppm, 0.0044° ppm −1 for concentrations of 1 to 10 ppm, and 0.00069° ppm −1 for concentrations from 10 to 100 ppm. Further analysis was also carried out by calculating the full width at half maximum (FWHM), detection accuracy (DA), and signal-tonoise ratio (SNR). In the binding analysis, the experimental results were fitted with Langmuir, Freundlich, and Sips isotherm equations. It was found that the Sips isotherm equation most closely fitted the experimental data with an R 2 value of 0.96716 and a binding affinity of 1.649 ppm −1 .

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“…3 For instance, reection interference spectroscopy (RIFS), 4 surface-enhanced Raman scattering (SERS) spectroscopy, 5 and surface plasmon resonance (SPR) are optical sensors that require a recognition element. 6 SPR is one of the favorable optical sensors that is widely used in sensing biochemical reaction owing to its advantages such as low-cost, label-free, fast measurement, and simple sample preparation. 7 The most common setup for SPR is by the Kretschmann conguration.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the sensitivity of a surface plasmon resonance-based optical sensor for zinc ion detection by the modification of a gold thin film

et al. 2019

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Development of Surface Plasmon Resonance Spectroscopy for Metal Ion Detection

Cited by 34 publications

References 62 publications

Structural and Optical Studies of Cadmium Sulfide Quantum Dot-Graphene Oxide-Chitosan Nanocomposite Thin Film as a Novel SPR Spectroscopy Active Layer

Structural and Optical Studies of Cadmium Sulfide Quantum Dot-Graphene Oxide-Chitosan Nanocomposite Thin Film as a Novel SPR Spectroscopy Active Layer

Label-free Binding Analysis of 4-(2-Pyridylazo)-resorcinol-based Composite Layer with Cobalt Ion Using Surface Plasmon Resonance Optical Sensor

Enhancing the sensitivity of a surface plasmon resonance-based optical sensor for zinc ion detection by the modification of a gold thin film

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