Analysis of Pb(II) ion sensing by crosslinked chitosan thin film using surface plasmon resonance spectroscopy

Fen, Yap Wing; Yunus, Wan Mahmood Mat; Talib, Zainal Abidin

doi:10.1016/j.ijleo.2011.11.035

Cited by 79 publications

(37 citation statements)

References 50 publications

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“…All chemicals used were of analytical grade and deionized water was used for all solution preparations. At first, a chitosan solution was prepared by dissolving 0.4 g of medium molecular weight chitosan that was purchased from Sigma-Aldrich with 50 ml of 1% acetic acid [23]. The cadmium sulfide quantum dots were prepared by a simple wet process [16].…”

Section: Preparation Of Chemicalsmentioning

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: Preparation Of Chemicalsmentioning

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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“…From the results, the resonance angle shifted to the left owing to changes in thickness and refractive index. (42) According to our previous reports, (1,6,11,12) we believe that the GO/PAMAM structure plays a vital role in adsorbing Hg 2+ . GO/PAMAM have high stability constant values with Hg 2+ owing to a carboxylic group in GO and an amine group in PAMAM.…”

Section: Sensing Propertiesmentioning

confidence: 92%

Optical Studies of Graphene Oxide/Poly(amidoamine) Dendrimer Composite Thin Film and Its Potential for Sensing Hg2+ Using Surface Plasmon Resonance Spectroscopy

Roshidi¹,

Fen²,

Omar³

et al. 2019

Sensors and Materials

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In this study, a graphene oxide/poly(amidoamine) (GO/PAMAM) dendrimer composite thin film was developed for the potential detection of Hg 2+ using surface plasmon resonance (SPR) spectroscopy. Fourier transform infrared spectroscopy (FTIR) analysis proved the presence of amino, carboxylic acid, carboxyl, and hydroxyl groups in the GO/PAMAM thin film. The optical properties of the thin film were characterized using UV-Vis absorption spectroscopy. The UV-Vis analysis showed that the absorption of the GO/PAMAM thin film was high with an optical band gap of 4.01 eV. The incorporation of the GO/PAMAM thin film with SPR spectroscopy produced positive responses towards various Hg 2+ concentrations. Atomic force microscopy results indicated that the thin film has an irregular edge and hence proved the interaction of mercury ions with the thin film.

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“…Fen et al then built a Pb(II) ion sensor by using a crosslinked chitosan thin film. (45) They prepared a crosslinked chitosan solution by the homogenous reaction of chitosan in an aqueous acetic acid solution and used glutaraldehyde as a crosslinker. By the spin coating technique, crosslinked chitosan was deposited on the surface of the gold thin film.…”

Section: Modification Of Spr and Gold Thin Filmmentioning

confidence: 99%

Development of Surface Plasmon Resonance Spectroscopy for Metal Ion Detection

Daniyal¹,

Saleviter²,

Fen³

2018

Sensors and Materials

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Surface plasmon resonance (SPR) spectroscopy has emerged as an optical sensor for sensing a variety of analytes, including metal ions. However, despite its numerous advantages, which include very high sensitivity, simple sample preparation, low cost, fast measurement capability, no requirement for reference solution, high reproducibility, ability to monitor kinetic behaviour, label-free detection, and nondestructiveness, the SPR optical sensor has to compete with existing methods especially in terms of sensitivity and selective detection. A critical review of the use of SPR in metal ion detection is presented. It describes the instrument and different developments on active layers or recognition molecules for sensitivity and selectivity improvements. In conclusion, progress in SPR optical sensor technology will further expand SPR detection abilities and allow SPR sensing to be used widely including in environmental monitoring as an effective metal ion sensor in the future.

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Analysis of Pb(II) ion sensing by crosslinked chitosan thin film using surface plasmon resonance spectroscopy

Cited by 79 publications

References 50 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

Optical Studies of Graphene Oxide/Poly(amidoamine) Dendrimer Composite Thin Film and Its Potential for Sensing Hg2+ Using Surface Plasmon Resonance Spectroscopy

Development of Surface Plasmon Resonance Spectroscopy for Metal Ion Detection

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