Enhanced Sensing Performance of an Ammonia Gas Sensor Based on Ag‐Decorated ZnO Nanorods / Polyaniline Nanocomposite

Karmakar, Narayan; Jain, Shilpa; Fernandes, R.; Shah, Akshara P.; Patil, U. V.; Shimpi, Navinchandra G.; Kothari, D.C.

doi:10.1002/slct.202204284

Cited by 13 publications

(4 citation statements)

References 64 publications

(100 reference statements)

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“…High sensitivity was observed due to high surface area of carbon nanotube. Karmakar and colleagues [58] used polyaniline and carbon nanotube derived the sensing nanomaterial for sensing the NO2 and CO2 molecules. Miah and researchers [59] proposed a gas sensor based on polypyrrole/carbon nanotube nanocomposite for sensing NOx molecules.…”

Section: Gas Sensing Potential Of Carbon Nanotube Nanocompositesmentioning

confidence: 99%

Carbon and graphene based nanocomposites for gas sensors—Current state and advances

Kausar,

Ahmad

2024

Charact. Appl. Nanomater.

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After the discovery of carbon nanoforms, carbon nanotube (one dimensional) and tube like nanostructure and graphene (two dimensional) nanosheets have gained immense research curiosity. Further nanotechnological developments have moved towards the formation of carbon nanotube nanocomposites and graphene nanocomposites. For the purpose, various matrices including thermoplastic polymers and conjugated polymers have been used. Methodology is the systematic gathering of the literature and development of a novel review outline, theme, and discussions regarding the discussed topics. Hence, varying conjugated polymers such as polyaniline, polythiophene, poly(3,4-ethylenedioxythiophene), and nonconjugated nylon, poly(ethylene glycol), etc. have been processed using techniques like in situ, solution, electropolymerization, spin coating, etc. In sensors, the nanocomposites need to develop fine nanoparticle dispersion, network formation, and interfacial interactions ultimately supporting the electron or charge transfer in these nanomaterials desirable for the recognition of the gaseous species. Moreover, interactions of the nanocomposite with the analyte molecules define the sensing capabilities of the nanomaterials. Consequently, nanocarbon nanocomposite based gas sensors have been analyzed for conductivity, change in resistance, sensitivity, selectivity, response time, detection limit, and other desirable properties. For future designs, it is recommended to develop high-tech combinations of conjugated polymers like polythiophene derivatives using functional forms of graphene and carbon nanotube. In addition, use of advanced manufacturing techniques like 3D/4D printing and spin coating must be applied to form efficient sensors. In conclusions, this manuscript presents not only comprehensive but also comparative analysis on different gas analysis parameters such as detection limit, concentration, response time, etc. for various nanocomposite sensors. Lastly, the encounters in preparing and applying graphene/carbon nanotube sensors, associated utilizations, and possible future prospects have been discussed.

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Section: Gas Sensing Potential Of Carbon Nanotube Nanocompositesmentioning

confidence: 99%

Carbon and graphene based nanocomposites for gas sensors—Current state and advances

Kausar,

Ahmad

2024

Charact. Appl. Nanomater.

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“…In recent years, there has been significant interest in utilizing distinctive characteristics of conductive polymers in conjunction with attributes of metal oxides used in MOS gas sensors [142,[147][148][149][150][151]. Metal oxide-based sensors are known for their consistently high sensitivity attributed to oxygen stoichiometry and active surface area [1][2][3].…”

Section: Conducting Polymersmentioning

confidence: 99%

Advancements in Improving Selectivity of Metal Oxide Semiconductor Gas Sensors Opening New Perspectives for Their Application in Food Industry

Wawrzyniak

2023

Sensors

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Volatile compounds not only contribute to the distinct flavors and aromas found in foods and beverages, but can also serve as indicators for spoilage, contamination, or the presence of potentially harmful substances. As the odor of food raw materials and products carries valuable information about their state, gas sensors play a pivotal role in ensuring food safety and quality at various stages of its production and distribution. Among gas detection devices that are widely used in the food industry, metal oxide semiconductor (MOS) gas sensors are of the greatest importance. Ongoing research and development efforts have led to significant improvements in their performance, rendering them immensely useful tools for monitoring and ensuring food product quality; however, aspects related to their limited selectivity still remain a challenge. This review explores various strategies and technologies that have been employed to enhance the selectivity of MOS gas sensors, encompassing the innovative sensor designs, integration of advanced materials, and improvement of measurement methodology and pattern recognize algorithms. The discussed advances in MOS gas sensors, such as reducing cross-sensitivity to interfering gases, improving detection limits, and providing more accurate assessment of volatile organic compounds (VOCs) could lead to further expansion of their applications in a variety of areas, including food processing and storage, ultimately benefiting both industry and consumers.

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“…In addition, conductive nanocomposites reinforced with nanoparticles have sensing properties for halogens, methane, nitrogen or sulfur oxide, and other gaseous species [118,119]. For gas-sensing, polyaniline nanocomposites can sense CO and NOx species [120]. The polypyrrole nanocomposite-derived gas sensors can also efficiently detect NOx molecules [121].…”

Section: Gas-sensingmentioning

confidence: 99%

Multifunctional Polymeric Nanocomposites for Sensing Applications—Design, Features, and Technical Advancements

et al. 2023

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Among nanocomposite materials, multifunctional polymer nanocomposites have prompted important innovations in the field of sensing technology. Polymer-based nanocomposites have been successfully utilized to design high-tech sensors. Thus, conductive, thermoplast, or elastomeric, as well as natural polymers have been applied. Carbon nanoparticles as well as inorganic nanoparticles, such as metal nanoparticles or metal oxides, have reinforced polymer matrices for sensor fabrication. The sensing features and performances rely on the interactions between the nanocomposites and analytes like gases, ions, chemicals, biological species, and others. The multifunctional nanocomposite-derived sensors possess superior durability, electrical conductivity, sensitivity, selectivity, and responsiveness, compared with neat polymers and other nanomaterials. Due to the importance of polymeric nanocomposite for sensors, this novel overview has been expanded, focusing on nanocomposites based on conductive/non-conductive polymers filled with the nanocarbon/inorganic nanofillers. To the best of our knowledge, this article is innovative in its framework and the literature covered regarding the design, features, physical properties, and the sensing potential of multifunctional nanomaterials. Explicitly, the nanocomposites have been assessed for their strain-sensing, gas-sensing, bio-sensing, and chemical-sensing applications. Here, analyte recognition by nanocomposite sensors have been found to rely on factors such as nanocomposite design, polymer type, nanofiller type, nanofiller content, matrix–nanofiller interactions, interface effects, and processing method used. In addition, the interactions between a nanocomposite and analyte molecules are defined by high sensitivity, selectivity, and response time, as well as the sensing mechanism of the sensors. All these factors have led to the high-tech sensing applications of advanced nanocomposite-based sensors. In the future, comprehensive attempts regarding the innovative design, sensing mechanism, and the performance of progressive multifunctional nanocomposites may lead to better the strain-sensing, gas/ion-sensing, and chemical-sensing of analyte species for technical purposes.

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Enhanced Sensing Performance of an Ammonia Gas Sensor Based on Ag‐Decorated ZnO Nanorods / Polyaniline Nanocomposite

Cited by 13 publications

References 64 publications

Carbon and graphene based nanocomposites for gas sensors—Current state and advances

Carbon and graphene based nanocomposites for gas sensors—Current state and advances

Advancements in Improving Selectivity of Metal Oxide Semiconductor Gas Sensors Opening New Perspectives for Their Application in Food Industry

Multifunctional Polymeric Nanocomposites for Sensing Applications—Design, Features, and Technical Advancements

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