Investigations on SPR induced Cu@Ag core shell doped SiO2-TiO2-ZrO2 fiber optic sensor for mercury detection

Prakashan, V.P.; George, Gejo; Sanu, M.S.; Sajna, M.S.; Saritha, A; Sudarsanakumar, C.; Biju, P.R.; Joseph, Cyriac; Unnikrishnan, N.V.

doi:10.1016/j.apsusc.2019.144957

Cited by 32 publications

(14 citation statements)

References 45 publications

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“…Tons of industrial waste that have come from numerous human activities, including waste containing toxic mercury ions, have resulted in severe environmental crises worldwide, which have slowly changed ecosystems. To stop this pollution from getting worse, a cost-effective sensing system for mercury is urgently needed . Here, we examined the application of specific inkjet-printed gold electrodes coupled with ssDNA for mercury sensing.…”

Section: Results and Discussionsupporting

confidence: 89%

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Antidelaminating, Thermally Stable, and Cost-Effective Flexible Kapton Platforms for Nitrate Sensors, Mercury Aptasensors, Protein Sensors, and p-Type Organic Thin-Film Transistors

Lin

Tsai

Díaz‐Amaya

et al. 2021

ACS Appl. Mater. Interfaces

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The inkjet printing of metal electrodes on polymer films is a desirable manufacturing process due to its simplicity but is limited by the lack of thermal stability and serious delaminating flaws in various aqueous and organic solutions. Kapton, adopted worldwide due to its superior thermal durability, allows the high-temperature sintering of nanoparticle-based metal inks. By carefully selecting inks (Ag and Au) and Kapton substrates (Kapton HN films with a thickness of 135 μm and a thermal resistance of up to 400 °C) with optimal printing parameters and simplified post-treatments (sintering), outstanding film integrity, thermal stability, and antidelaminating features were obtained in both aqueous and organic solutions without any pretreatment strategy (surface modification). These films were applied in four novel devices: a solid-state ion-selective (IS) nitrate (NO 3 − ) sensor, a single-stranded DNA (ssDNA)-based mercury (Hg 2+ ) aptasensor, a low-cost protein printed circuit board (PCB) sensor, and a long-lasting organic thin-film transistor (OTFT). The IS NO 3 − sensor displayed a linear sensitivity range between 10 −4.5 and 10 −1 M (r 2 = 0.9912), with a limit of detection of 2 ppm for NO 3 − . The Hg 2+ sensor exhibited a linear correlation (r 2 = 0.8806) between the change in the transfer resistance (R CT ) and the increasing concentration of Hg 2+ . The protein PCB sensor provided a label-free method for protein detection. Finally, the OTFT demonstrated stable performance, with mobility values in the linear (μ lin ) and saturation (μ sat ) regimes of 0.0083 ± 0.0026 and 0.0237 ± 0.0079 cm 2 V −1 S −1 , respectively, and a threshold voltage (V th ) of −6.75 ± 3.89 V.

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Section: Results and Discussionsupporting

confidence: 89%

“…To stop this pollution from getting worse, a cost-effective sensing system for mercury is urgently needed. 39 Here, we examined the application of specific inkjetprinted gold electrodes coupled with ssDNA for mercury sensing. Figure 5A shows the results of working electrode (WE) characterization.…”

Section: Inkjet-printed Film Adhesionmentioning

confidence: 99%

Antidelaminating, Thermally Stable, and Cost-Effective Flexible Kapton Platforms for Nitrate Sensors, Mercury Aptasensors, Protein Sensors, and p-Type Organic Thin-Film Transistors

Lin

Tsai

Díaz‐Amaya

et al. 2021

ACS Appl. Mater. Interfaces

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“…The matrix was obtained using a non-hydrolytic version of the sol-gel method, with tetraethylorthosilicate, titanium (IV) isopropoxide, and zirconium (IV) propoxide as precursors, and then, the nanoparticles were mixed into the matrix using sonication. Although the substrate was not tested for enhancement of Raman or infrared signals, it was tested for amplification of UV/Vis spectroscopy utilizing surface plasmon resonance sensing, achieving a detection of concentrations as low as 10 µM of vitamin A. Prakashan et al [122] also tested a similar SiO 2 -TiO 2 -ZrO 2 ceramic matrix, but instead of Au and Ag nanoparticles, the gold was substituted for copper, in this case, for the detection of mercury. The spectroscopic technique used was also the sensing of SPR.…”

Section: Sol-gel Ceramics For Seiras and Sersmentioning

confidence: 99%

Sol–Gel Ceramics for SEIRAS and SERS Substrates

Garibay-Alvarado

Reyes-López

2021

Crystals

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Surface Enhanced Infrared Absorption Spectroscopy and Surface Enhanced Raman Spectroscopy are analytic techniques that have not been massively adopted since there are issues that still need to be solved with regard to the nature of the signal enhancement substrates used. The sol–gel method for the obtention of ceramics provides an alternative for the production of said substrates. Ceramics are very wear- and heat-resistant, properties that can be used for their regeneration, and through the sol–gel method, ceramics can be produced with high purity as well as can be fashioned in many ways through different techniques, which can be helpful in the pursuit of reproducibility. This paper discusses the different advantages of sol–gel ceramics, their use in the electrospinning technique, and their application in infrared and Raman surface-enhanced spectroscopy.

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“…The sensitivity of the proposed Hg 2+ probe was experimentally demonstrated with the high sensitivity of >0.1 nm/ppm, which is ~33.5 times compared with that of the uncoated and ~14.5 times compared with that of the PE-only coated LPFGs. Prakashan et al proposed the non-toxic SiO 2 -TiO 2 -ZrO 2 ternary system as the probable host for Cu@Ag core shell NPs to determine the Hg 2+ concentration [ 81 ]. However, the contribution of SiO 2 -TiO 2 -ZrO 2 ternary system is unclear in addition to its host role similar to the polymer so-gel.…”

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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Investigations on SPR induced Cu@Ag core shell doped SiO2-TiO2-ZrO2 fiber optic sensor for mercury detection

Cited by 32 publications

References 45 publications

Antidelaminating, Thermally Stable, and Cost-Effective Flexible Kapton Platforms for Nitrate Sensors, Mercury Aptasensors, Protein Sensors, and p-Type Organic Thin-Film Transistors

Antidelaminating, Thermally Stable, and Cost-Effective Flexible Kapton Platforms for Nitrate Sensors, Mercury Aptasensors, Protein Sensors, and p-Type Organic Thin-Film Transistors

Sol–Gel Ceramics for SEIRAS and SERS Substrates

Preparation and Application of Metal Nanoparticals Elaborated Fiber Sensors

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