Zinc oxide nanoparticle incorporated graphene oxide as sensing coating for interferometric optical microfiber for ammonia gas detection

Fu, Haiwei; Jiang, Youhua; Ding, Jijun; Zhang, Jingle; Zhang, Min; Zhu, Yi; Li, Huidong

doi:10.1016/j.snb.2017.06.067

Cited by 117 publications

(40 citation statements)

References 31 publications

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“…Graphene offers many intriguing electrical, optical, chemical, and mechanical properties [1] that are highly interesting in application in photovoltaics [2][3][4][5], sensors [6,7], coating materials for optical components [8], as electrical & thermal conductive materials used in microelectronics [9][10][11][12], ultrathin membranes [13], and anticorrosion layers on critical parts working under hazardous surroundings [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Large Area Graphene Deposition on Hydrophobic Surfaces, Flexible Textiles, Glass Fibers and 3D Structures

et al. 2019

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Graphene and its derivatives have many superior electrical, thermal, mechanical, chemical, and structural properties, and promise for many applications. One of the issues for scalable applications is the lack of a simple, reliable method that allows the deposit of a well-ordered monolayer using low-cost graphene flakes onto target substrates with different surface properties. Another issue is the adhesion of the deposited graphene thin film, which has not been well investigated yet. Following our former finding of a double self-assembly (DSA) process for efficient deposition of a monolayer of graphene flakes (MGFs), in this work we demonstrate that the DSA process can be applied even on very challenging samples including highly hydrophobic polytetrafluoroethylene (PTFE), flexible textiles, complex 3D objects, and thin glass fibers. Additionally, we tested adhesion of the graphene flakes on the flat glass substrate by scotch tape peel test of the MGFs. The results show that the graphene flakes adhere quite well on the flat glass substrate and most of the graphene flakes stay on the glass. These findings may trigger many large-scale applications of low-cost graphene feedstocks and other 2D materials.

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Section: Introductionmentioning

confidence: 99%

Large Area Graphene Deposition on Hydrophobic Surfaces, Flexible Textiles, Glass Fibers and 3D Structures

et al. 2019

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“…A literature method was used for synthesis of TiO 2 ‐GO. The TiO 2 ‐CNT NH was synthesized by applying the method of Huang et al The synthesis of the ZnO‐GO NH was fabricated according to the method described by Fu et al, and ZnO‐CNT was synthesized using the method described by Wang et al…”

Section: Methodsmentioning

confidence: 99%

Toxicity of ZnO/TiO₂‐conjugated carbon‐based nanohybrids on the coastal marine alga Thalassiosira pseudonana

Baek

Joo

et al. 2019

Environmental Toxicology

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Increasing consumption of metal-oxide nanoparticles (NPs) and carbon-based nanomaterials has caused significant concern about their potential hazards in aquatic environments. The release of NPs into aquatic environments could result in adsorption of NPs on microorganisms. While metal-oxide NP-conjugated carbon-based nanohybrids (NHs) may exhibit enhanced toxicity toward microorganisms due to their large surface area and the generation of reactive oxygen species (ROS), there is a lack of information regarding the ecotoxicological effects of NHs on marine diatom algae, which are an indicator of marine pollution. Moreover, there is scant information on toxicity mechanisms of NHs on aquatic organisms. In this study, four NHs (ie, ZnOconjugated graphene oxide [GO], ZnO-conjugated carbon nanotubes [CNTs], TiO 2conjugated GO, and TiO 2 -conjugated CNT) that were synthesized by a hydrothermal method were investigated for their toxicity effects on a Thalassiosira pseudonana marine diatom. The in vitro cellular viability and ROS formation employed at the concentration ranges of 50 and 100 mg/L of NHs over 72 hours revealed that ZnO-GO had the most negative effect on T. pseudonana. The primary mechanism identified was the generation of ROS and GO-induced dispersion that caused electrostatic repulsion, preventing aggregation, and an increase in surface areas of NHs. In contrast to GO-induced dispersion, large aggregates were observed in ZnO/TiO 2conjugated CNT-based NHs. The scanning electron microscopy images suggest that NHs covered algae cells and interacted with them (shading effects); this reduced light availability for photosynthesis. Detailed in vitro toxicity effects and mechanisms that cause high adverse acute toxicity on T. pseudonana were unveiled; this implied concerns about potential hazards of these mechanisms in aquatic ecosystems. K E Y W O R D S carbon nanotube, graphene oxide, metal oxides, nanohybrids, Thalassiosira pseudonana,toxicity

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“…Upon changes in the surrounding environment, this membrane undergoes a reversible change in its physical or chemical properties, which results in a modulation of the device reflectometric characteristics [ 38 ]. Regarding the performance of interferometric gas sensors, recent studies show that these devices can offer high sensitivities at a few ppm (e.g., 0–140 ppm [ 39 ]), limit of detection (LOD) in the ppb range (e.g., 140 ppb [ 40 ]), and response times of a few seconds. On the other hand, gas sensors that rely on fluorescence or colorimetric techniques have also been widely implemented for the detection of VOCs and odorous species [ 41 , 42 , 43 ].…”

Section: Gas Sensors For Vocs Detectionmentioning

confidence: 99%

Advancements in Microfabricated Gas Sensors and Microanalytical Tools for the Sensitive and Selective Detection of Odors

Ollé

Farré-Lladós

Casals‐Terré

2020

Sensors

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In recent years, advancements in micromachining techniques and nanomaterials have enabled the fabrication of highly sensitive devices for the detection of odorous species. Recent efforts done in the miniaturization of gas sensors have contributed to obtain increasingly compact and portable devices. Besides, the implementation of new nanomaterials in the active layer of these devices is helping to optimize their performance and increase their sensitivity close to humans’ olfactory system. Nonetheless, a common concern of general-purpose gas sensors is their lack of selectivity towards multiple analytes. In recent years, advancements in microfabrication techniques and microfluidics have contributed to create new microanalytical tools, which represent a very good alternative to conventional analytical devices and sensor-array systems for the selective detection of odors. Hence, this paper presents a general overview of the recent advancements in microfabricated gas sensors and microanalytical devices for the sensitive and selective detection of volatile organic compounds (VOCs). The working principle of these devices, design requirements, implementation techniques, and the key parameters to optimize their performance are evaluated in this paper. The authors of this work intend to show the potential of combining both solutions in the creation of highly compact, low-cost, and easy-to-deploy platforms for odor monitoring.

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Zinc oxide nanoparticle incorporated graphene oxide as sensing coating for interferometric optical microfiber for ammonia gas detection

Cited by 117 publications

References 31 publications

Large Area Graphene Deposition on Hydrophobic Surfaces, Flexible Textiles, Glass Fibers and 3D Structures

Large Area Graphene Deposition on Hydrophobic Surfaces, Flexible Textiles, Glass Fibers and 3D Structures

Toxicity of ZnO/TiO₂‐conjugated carbon‐based nanohybrids on the coastal marine alga Thalassiosira pseudonana

Advancements in Microfabricated Gas Sensors and Microanalytical Tools for the Sensitive and Selective Detection of Odors

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Zinc oxide nanoparticle incorporated graphene oxide as sensing coating for interferometric optical microfiber for ammonia gas detection

Cited by 117 publications

References 31 publications

Large Area Graphene Deposition on Hydrophobic Surfaces, Flexible Textiles, Glass Fibers and 3D Structures

Large Area Graphene Deposition on Hydrophobic Surfaces, Flexible Textiles, Glass Fibers and 3D Structures

Toxicity of ZnO/TiO2‐conjugated carbon‐based nanohybrids on the coastal marine alga Thalassiosira pseudonana

Advancements in Microfabricated Gas Sensors and Microanalytical Tools for the Sensitive and Selective Detection of Odors

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Toxicity of ZnO/TiO₂‐conjugated carbon‐based nanohybrids on the coastal marine alga Thalassiosira pseudonana