Facile synthesis of hollow F‐doped SnO<sub>2</sub> nanofibers and their efficiency in ethanol sensing

Nascimento, Emanuel Pereira do; Firmino, Hellen C.T.; Santos, Adillys M. C.; Sales, Herbet Bezerra; Silva, Vinícius D.; Macedo, Daniel A.; Neves, G. A.; Medeiros, Eliton S.; Menezes, Romualdo Rodrigues

doi:10.1111/jace.17580

Cited by 29 publications

(19 citation statements)

References 55 publications

(140 reference statements)

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“…starts losing its efficiency, owing to irreversible adsorption of impurities and moisture.16,19,41 A comparison of this study with previous reports is presented in Table…”

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confidence: 63%

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Enhanced Room-Temperature Ethanol Detection by Quasi 2D Nanosheets of an Exfoliated Polymeric Graphitized Carbon Nitride Composite-Based Patterned Sensor

et al. 2022

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A novel room-temperature gas sensor composed of polymeric graphitic carbon nitride composite was fabricated and used for the detection of ethanol vapor under ambient conditions. Polymeric carbon nitride (PCN) microstructures composed of fluffy nanosheets were synthesized via a thermal polycondensation mechanism using melamine as the precursor, followed by vigorous chemical exfoliation. These sheet-like microstructures were employed as active materials in the form of composites, along with carbon paste consisting of graphite nanoplatelets and carbon black. The active sensing layer was fabricated on a PET sheet and assembled on an interdigitated gold electrode. The as-fabricated sensor exhibited excellent sensing efficiency (>100% response at 10 ppm) along with high selectivity and stability. In particular, for ultralow concentrations such as 1 ppm (>10% response), this resistive-based sensor exhibited a swift response time provided under ambient conditions. The exfoliated PCN composite sensor was found to be working with appreciable efficiency at moderate relative humidity (%) with the least fluctuation in response signals also demonstrating long-term stability for 30 days with consistent response signals.

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“…starts losing its efficiency, owing to irreversible adsorption of impurities and moisture.16,19,41 A comparison of this study with previous reports is presented in Table…”

mentioning

confidence: 63%

“…Figure d presents the long-term stability study and infers that the composite sensor works efficiently up to 4 weeks as response signals were quite consistent up to 30 days. Later, the sensor starts losing its efficiency, owing to irreversible adsorption of impurities and moisture. ,, …”

Section: Resultsmentioning

confidence: 99%

Enhanced Room-Temperature Ethanol Detection by Quasi 2D Nanosheets of an Exfoliated Polymeric Graphitized Carbon Nitride Composite-Based Patterned Sensor

et al. 2022

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“…Experiments were carried out at room temperature (25°C) and relative humidity of 55%. The ethanol vapor (target gas) volume necessary to reach a concentration of 30 ppm released was calculated from expression: 39,43

C ((), ppm) goodbreak= \frac{22 * ρ * d * V_{1}}{italicMw * V_{2}} * 1000

where: C (ppm) represents the gas concentration, ρ (g.ml −1 ) is the density, d is the purity, V 1 (μl) is the volume and Mw (g.mol −1 ) is the molecular weight of the analyte, and V 2 (μl) is the volume of the glass reservoir.…”

Section: Methodsmentioning

confidence: 99%

“…It is a simple, low‐cost, and rapid technique that uses a pressurized gas stream as the driving force to produce micro‐ and nanofibers 33,34 . SBS has been applied for a vast field, such as hollow ceramic nanofibers, 35 catalyses, 36 materials with antimicrobial activity, 37 microfiltration membranes, 38 and metal oxide‐based sensors 39 . Recently, Miranda et al 40 reported an efficient packaging system composed of poly(lactic acid) nanofibrous mats produced by SBS capable of boosting the oxidation of ethylene and, consequently, delaying the maturation time of climacteric fruits.…”

Section: Introductionmentioning

confidence: 99%

Fruit ripeness sensors based on poly(lactic acid)/polyaniline solution blow‐spun fibrous membranes

Silva

Santos

Oliveira

et al. 2022

J of Applied Polymer Sci

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Real-time ripening monitoring stands as an attractive way to guarantee quality control and prediction of shelf life during transport and prolonged storage of fruits and vegetables. Herein, we investigate the use of poly(lactic acid)/polyaniline (PLA/PANI) solution blow-spun nanofibrous membranes as gas sensors for fruit ripening monitoring. PLA/PANI with different blend ratios was prepared by dissolving PANI in dichloroethane (DCE) for further mixing with PLA and spinning onto interdigitated microelectrode (IME). The ripening process of four different fruits (apple, orange, banana, and cashew peduncle), climacteric, and non-climacteric fruits, was assessed over 72 h by real-time monitoring changes in volatile organic compounds (VOCs) released during fruit ripening. Since adsorption of VOCs onto sensor surface causes changes in electrical response, which is directly related to the fruit ripening process, PANI addition was essential to monitor the ripening. However, higher concentrations (2% PANI in PLA) impair sensor conductivity and sensitivity because of the agglomeration of conductive polymer particles, which directly influences the sensitivity and the average fiber diameter. One of the main findings, here, was the clear distinction between different patterns of monitoring curves according to the category of the analyzed fruit (climacteric or non-climacteric).

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“…Further, it has been concluded that a large surface-to-volume ratio of SnO 2 and its different composites will ensure enhanced surface area available for the target gas interactions, as a result of which the realization of high sensitivity even at low temperatures can be obtained. As a consequence of this, the materials with high specific surface area and specific surface morphology will manifest the presence of sufficient active sites that can selectively and effectively interact with the target gas, which can consequently improve the sensing performance of a material, including its sensitivity and selectivity [ 58 ]. Although many reviews have already been written on the metal oxides as gas sensors, no systematic and comprehensive effort has been made towards their lack of stability and limited selectivity which has resulted in the gas response’s “long-term spoiling”.…”

Section: Introductionmentioning

confidence: 99%

Tin Oxide Based Hybrid Nanostructures for Efficient Gas Sensing

Pandit

Ahmad

2022

Molecules

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Tin oxide as a semiconductor metal oxide has revealed great potential in the field of gas sensing due to its porous structure and reduced size. Especially for tin oxide and its composites, inherent properties such as high surface areas and their unique semiconducting properties with tunable band gaps make them compelling for sensing applications. In combination with the general benefits of metal oxide nanomaterials, the incorporation of metal oxides into metal oxide nanoparticles is a new approach that has dramatically improved the sensing performance of these materials due to the synergistic effects. This review aims to comprehend the sensing mechanisms and the synergistic effects of tin oxide and its composites in achieving high selectivity, high sensitivity and rapid response speed which will be addressed with a full summary. The review further vehemently highlights the advances in tin oxide and its composites in the gas sensing field. Further, the structural components, structural features and surface chemistry involved in the gas sensing are also explained. In addition, this review discusses the SnO2 metal oxide and its composites and unravels the complications in achieving high selectivity, high sensitivity and rapid response speed. The review begins with the gas sensing mechanisms, which are followed by the synthesis methods. Further key results and discussions of previous studies on tin metal oxide and its composites are also discussed. Moreover, achievements in recent research on tin oxide and its composites for sensor applications are then comprehensively compiled. Finally, the challenges and scope for future developments are discussed.

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Facile synthesis of hollow F‐doped SnO₂ nanofibers and their efficiency in ethanol sensing

Cited by 29 publications

References 55 publications

Enhanced Room-Temperature Ethanol Detection by Quasi 2D Nanosheets of an Exfoliated Polymeric Graphitized Carbon Nitride Composite-Based Patterned Sensor

Enhanced Room-Temperature Ethanol Detection by Quasi 2D Nanosheets of an Exfoliated Polymeric Graphitized Carbon Nitride Composite-Based Patterned Sensor

Fruit ripeness sensors based on poly(lactic acid)/polyaniline solution blow‐spun fibrous membranes

Tin Oxide Based Hybrid Nanostructures for Efficient Gas Sensing

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Facile synthesis of hollow F‐doped SnO2 nanofibers and their efficiency in ethanol sensing

Cited by 29 publications

References 55 publications

Enhanced Room-Temperature Ethanol Detection by Quasi 2D Nanosheets of an Exfoliated Polymeric Graphitized Carbon Nitride Composite-Based Patterned Sensor

Enhanced Room-Temperature Ethanol Detection by Quasi 2D Nanosheets of an Exfoliated Polymeric Graphitized Carbon Nitride Composite-Based Patterned Sensor

Fruit ripeness sensors based on poly(lactic acid)/polyaniline solution blow‐spun fibrous membranes

Tin Oxide Based Hybrid Nanostructures for Efficient Gas Sensing

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Facile synthesis of hollow F‐doped SnO₂ nanofibers and their efficiency in ethanol sensing