Characterization of Graphene Oxide Coatings onto Optical Fibers for Sensing Applications

Alberto, Nélia; Vigário, César; Duarte, Daniel P.; Almeida, Nuno A.F.; Gonçalves, Gil; Pinto, João; Marques, Paula A.A.P.; Nogueira, Rogério N.; Neto, Victor

doi:10.1016/j.matpr.2015.04.019

Cited by 11 publications

(5 citation statements)

References 19 publications

(20 reference statements)

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“…For instance, Goncalves et al [117] developed an Hg 2+ sensor using a tapered tip silica fiber by immobilizing PEI as the polycation electrolyte followed by depositing CDs at the end tip of the sensor probe. Similarly, Alberto et al [118] reported a GO-coated tilted Bragg grating prepared using the LbL-ESA method. Alberto et al [118] first treated the optical fiber with sodium hydroxide to produce a negatively charged surface for subsequent deposition of poly(diallyldimethyammonium chloride) (PDDA) and poly(sodium 4-styrene-sulfonate) in an alternate manner.…”

Section: Layer-by-layer Electrostatic Self-assembly (Lbl-esa)mentioning

confidence: 93%

“…Similarly, Alberto et al [118] reported a GO-coated tilted Bragg grating prepared using the LbL-ESA method. Alberto et al [118] first treated the optical fiber with sodium hydroxide to produce a negatively charged surface for subsequent deposition of poly(diallyldimethyammonium chloride) (PDDA) and poly(sodium 4-styrene-sulfonate) in an alternate manner. PDDA that served as the polycation electrolyte was coated to the external layer of the optical fiber before the deposition of the negatively charged GO.…”

Section: Layer-by-layer Electrostatic Self-assembly (Lbl-esa)mentioning

confidence: 93%

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Carbon Allotrope-Based Optical Fibers for Environmental and Biological Sensing: A Review

Yap

Chan

Tjin

et al. 2020

Sensors

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Recently, carbon allotropes have received tremendous research interest and paved a new avenue for optical fiber sensing technology. Carbon allotropes exhibit unique sensing properties such as large surface to volume ratios, biocompatibility, and they can serve as molecule enrichers. Meanwhile, optical fibers possess a high degree of surface modification versatility that enables the incorporation of carbon allotropes as the functional coating for a wide range of detection tasks. Moreover, the combination of carbon allotropes and optical fibers also yields high sensitivity and specificity to monitor target molecules in the vicinity of the nanocoating surface. In this review, the development of carbon allotropes-based optical fiber sensors is studied. The first section provides an overview of four different types of carbon allotropes, including carbon nanotubes, carbon dots, graphene, and nanodiamonds. The second section discusses the synthesis approaches used to prepare these carbon allotropes, followed by some deposition techniques to functionalize the surface of the optical fiber, and the associated sensing mechanisms. Numerous applications that have benefitted from carbon allotrope-based optical fiber sensors such as temperature, strain, volatile organic compounds and biosensing applications are reviewed and summarized. Finally, a concluding section highlighting the technological deficiencies, challenges, and suggestions to overcome them is presented.2 of 43 of target molecules or physical parameters. In some instances, surface-modified carbon allotropes also permit multi-parameter detection capabilities of carbon allotrope-based OFS [7]. As such, an insight into the recent advances of carbon allotrope-based OFS can serve as a guideline to develop an effective detection approach for emerging real-world applications. Many review articles on carbon allotrope-based OFS mainly focus on a single type of carbon allotrope and the fundamental theory of carbon allotrope-based OFS [8,9]. Thus, this comprehensive review article encompasses the properties, preparation, sensing mechanisms, nanocoating deposition techniques, physical and biochemical sensing applications. This review aims to highlight the recent research work on carbon allotrope-based OFS that will serve as a reference guide for researchers to develop optimal detection approaches for physical parameters or trace level monitoring of chemical and biomolecules. Four groups of carbon allotropes, including carbon nanotubes (CNT), carbon dots (CDs), graphene, and nanodiamonds (NDs), will be studied. Commonly adopted synthesis approaches, classification of various deposition techniques for the integration of carbon allotropes as the thin film coating of OFS as well as numerous examples of these carbon allotrope-based OFS will also be outlined.

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Section: Layer-by-layer Electrostatic Self-assembly (Lbl-esa)mentioning

confidence: 93%

Section: Layer-by-layer Electrostatic Self-assembly (Lbl-esa)mentioning

confidence: 93%

Carbon Allotrope-Based Optical Fibers for Environmental and Biological Sensing: A Review

Yap

Chan

Tjin

et al. 2020

Sensors

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“…The mesoporous nickel oxide was prepared by a surfactant-templated method via urea hydrolysis of metal nitrates followed by calcination in air, and denoted as meso-NiO. For comparison, the traditional nano-sized NiO without the mesoporous structure was prepared by a modified sol-gel method [16] using citric acid as the ligand, and denoted as bulk-NiO. The mesoporous structure and surface properties of nickel oxide were characterized by XRD, N 2 physical adsorption, O 2 temperature programmed desorption (O 2 -TPD), X-ray photoelectron spectroscopy (XPS) techniques, and laser Raman spectroscopy.…”

Section: Texture Characterizationsmentioning

confidence: 99%

“…Nano-nickel oxide was synthesized by the sol-gel method [15,16]. 0.03 M Ni(NO 3 ) 2 , and 0.03 M of citric acid was added to 50 mL of ethanol and then stirred with a glass rod until completely dissolved.…”

Section: Synthesis Of Nano-nickel Oxidementioning

confidence: 99%

Engineering Mesoporous NiO with Enriched Electrophilic Ni3+ and O− toward Efficient Oxygen Evolution

et al. 2018

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Tremendous efforts have been devoted to develop low-cost and highly active electrocatalysts for oxygen evolution reaction (OER). Here, we report the synthesis of mesoporous nickel oxide by the template method and its application in the title reaction. The as-prepared mesoporous NiO possesses a large surface area, uniform mesopores, and rich surface electrophilic Ni3+ and O− species. The overpotential of meso-NiO in alkaline medium is 132 mV at 10 mA cm−1 and 410 mV at 50 mA cm−1, which is much smaller than that of the other types of NiO samples. The improvement in the OER activity can be ascribed to the synergy of the large surface area and uniform mesopores for better mass transfer and high density of Ni3+ and O− species favoring the nucleophilic attack by OH− to form a NiOOH intermediate. The reaction process and the role of electrophilic Ni3+ and O− were discussed in detail. This results are more conducive to the electrochemical decomposition of water to produce hydrogen fuel as a clean and renewable energy.

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“…On the other hand, these systems are vulnerable to light intensity variations, light source instabilities, micro and macro bending or external source coupling. In order to overcome these undesired effects these systems use complex detection algorithms and systems with referenced measurements, which are not associated with the light intensity variations produced by the selected analyte [ 117 , 118 ].…”

Section: Optical Fibre Sensors Using Graphene-based Materialsmentioning

confidence: 99%

Optical Fibre Sensors Using Graphene-Based Materials: A Review

Hernáez

Zamarreño

Melendi-Espina

et al. 2017

Sensors

108

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Graphene and its derivatives have become the most explored materials since Novoselov and Geim (Nobel Prize winners for Physics in 2010) achieved its isolation in 2004. The exceptional properties of graphene have attracted the attention of the scientific community from different research fields, generating high impact not only in scientific journals, but also in general-interest newspapers. Optical fibre sensing is one of the many fields that can benefit from the use of these new materials, combining the amazing morphological, chemical, optical and electrical features of graphene with the advantages that optical fibre offers over other sensing strategies. In this document, a review of the current state of the art for optical fibre sensors based on graphene materials is presented.

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Characterization of Graphene Oxide Coatings onto Optical Fibers for Sensing Applications

Cited by 11 publications

References 19 publications

Carbon Allotrope-Based Optical Fibers for Environmental and Biological Sensing: A Review

Carbon Allotrope-Based Optical Fibers for Environmental and Biological Sensing: A Review

Engineering Mesoporous NiO with Enriched Electrophilic Ni3+ and O− toward Efficient Oxygen Evolution

Optical Fibre Sensors Using Graphene-Based Materials: A Review

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