Detection of mercury (II) ions in water by polyelectrolyte–gold nanoparticles coated long period fiber grating sensor

Tan, Shin Yinn; Lee, Sheng Chyan; Okazaki, Takuya; Kuramitz, Hideki; Rahman, Fadzilah Abd

doi:10.1016/j.optcom.2018.02.069

Cited by 30 publications

(13 citation statements)

References 27 publications

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“…In the literature, there are numerous examples of the application, e.g., in the field of membranes [16]. Moreover, there are many studies dealing with surface modifications using polyelectrolyte multilayers for obtaining surfaces with antibacterial [17,18], sensory [19], or biocompatible properties [20].…”

Section: Introductionmentioning

confidence: 99%

Ion-Specific and Solvent Effects on PDADMA–PSS Complexation and Multilayer Formation

Jukić

Korade

Milisav

et al. 2021

Colloids and Interfaces

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Among various parameters that influence the formation of polyelectrolyte complexes and multilayers, special emphasis should be placed on ion-specific and solvent effects. In our study, we systematically examined the above-mentioned effects on poly(diallyldimethylammonium chloride) (PDADMACl)-sodium poly(4-styrenesulfonate) (NaPSS) complexation in solution and at the surface by means of dynamic light scattering, ellipsometry and atomic force microscopy measurements. As solvents, we used water and water/ethanol mixture. The obtained results confirm the importance of ion-specific and solvent effects on complexes prepared in solution, as well as on multilayers built up on a silica surface. The experiments in mixed solvent solution showed that at a higher ethanol mole fraction, the decrease in monomer titrant to titrand ratio, at which the increase in the size of complexes is observed, takes place. The difference between chloride and bromide ions was more pronounced at a higher mole fraction of ethanol and in the case of positive complex formation, suggesting that the larger amount of bromide ions could be condensed to the polycation chain. These findings are in accordance with the results we obtained for polyelectrolyte multilayers and could be helpful for designing polyelectrolyte multilayers with tuned properties needed for various applications, primarily in the field of biomedicine.

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Section: Introductionmentioning

confidence: 99%

Ion-Specific and Solvent Effects on PDADMA–PSS Complexation and Multilayer Formation

Jukić

Korade

Milisav

et al. 2021

Colloids and Interfaces

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“…In order to eliminate the interference of environmental factors and obtain the high sensitivity, the probe has been experimentally verified to have a minimum detection limit of 1 μm [ 79 ], which may be far higher than the stringent indicators of drinking water. Similarly, the polyelectrolyte, which can be used for electrostatic layer by layer self-assembly, includes poly(sodium-p-styrenesulfonate) (PSS, negatively charged layer) and poly-dimethyl diallyl ammonium chloride (PDDA, positive charged layer) [ 80 ]. With the number of layers, the refractive index difference between the core and cladding decreases, and the resonance peak gradually disappears.…”

Section: Fiber-lspr Chemical Sensorsmentioning

confidence: 99%

Preparation and Application of Metal Nanoparticals Elaborated Fiber Sensors

Haoru

et al. 2020

Sensors

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In recent years, surface plasmon resonance devices (SPR, or named plamonics) have attracted much more attention because of their great prospects in breaking through the optical diffraction limit and developing new photons and sensing devices. At the same time, the combination of SPR and optical fiber promotes the development of the compact micro-probes with high-performance and the integration of fiber and planar waveguide. Different from the long-range SPR of planar metal nano-films, the local-SPR (LSPR) effect can be excited by incident light on the surface of nano-scaled metal particles, resulting in local enhanced light field, i.e., optical hot spot. Metal nano-particles-modified optical fiber LSPR sensor has high sensitivity and compact structure, which can realize the real-time monitoring of physical parameters, environmental parameters (temperature, humidity), and biochemical molecules (pH value, gas-liquid concentration, protein molecules, viruses). In this paper, both fabrication and application of the metal nano-particles modified optical fiber LSPR sensor probe are reviewed, and its future development is predicted.

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“…A LPFG coated with polyelectrolyte for sensitivity enhancement and gold nanoparticles for chelation of Hg 2+ was fabricated by Tan et al [81]. The coating was immobilized onto the LPFG surface by electrostatic self-assembly.…”

Section: Detection Of Mercury Ionmentioning

confidence: 99%

Optical Fiber Refractometer Based Metal Ion Sensors

2019

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Research into optical fiber refractometers yielded remarkable results over the past decade. Numerous sensing schemes were proposed and demonstrated, which possessed different advantages while facing unique limitations. On top of their obvious applications in measuring refractive index changes of the ambient environment, several studies reported advanced applications of such sensors in heavy metal ion detection by means of surface coating of the refractometers with heavy metal ion sensitive materials. This paper surveys the effort these optical fiber metal ion sensors based on surface coated optical fiber refractometer, discusses different technologies and methods involved, and highlights recent notable advancements.

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Detection of mercury (II) ions in water by polyelectrolyte–gold nanoparticles coated long period fiber grating sensor

Cited by 30 publications

References 27 publications

Ion-Specific and Solvent Effects on PDADMA–PSS Complexation and Multilayer Formation

Ion-Specific and Solvent Effects on PDADMA–PSS Complexation and Multilayer Formation

Preparation and Application of Metal Nanoparticals Elaborated Fiber Sensors

Optical Fiber Refractometer Based Metal Ion Sensors

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