Preparation of Ceramic Humidity Sensors by Electrospinning and Sintering: a Promising Alternative

Araújo, Evando S.

doi:10.31031/rdms.2018.06.000647

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…Humidity is a problem of great importance in several areas of research and production, such as pharmaceutical, food, or electronics industries [1][2][3], as the needs of the mentioned industries are sufficient to justify continuous interest in the development of enhanced humidity sensors.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Polyantimonic-Based Materials’ Moisture Response with Binder Content Tuning

Mendes,

Kurapova,

Faia

2023

Chemosensors

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Humidity sensors are of huge importance in diverse domains. Several types of materials present a moisture-sensing capacity; however, frequently, their electrical response does not display time stability. Due to its high thermal stability, high ionic conductivity, and different conduction mechanism contributing to its overall conductivity, polyantimonic acid (PAA) is seen as a promising material for humidity-sensing devices. In the present work, crystalline PAA was obtained via a simple and safe hydrolysis technique using SbCl3 as a precursor. Bulky sensor samples were produced using different amounts of polyvinyl alcohol (10–20 wt.% PVA) as a binder. The obtained PAA solid sensors were tested at room temperature (RT) in order to evaluate their moisture detection/measuring ability in the relative humidity range 0–100%; the evaluation was carried out with electrical impedance spectroscopy. The sample’s structure and morphology were studied using diverse experimental techniques (porosimetry, scanning electron microscopy, X-ray diffraction analysis, and thermogravimetry analysis, etc.). The sensors’ electrical response was in line with the found structural and morphological features. The slope of the resistance variation with an RH percentage concentration between 1 kΩ and 1.5 kΩ was noted for all sensors (showing no changes with time) in the interval between 30 and 100% RH. A good repeatability and reproducibility of the evaluated sensors’ electrical response was observed: the ones that displayed a higher sensitivity were the ones with a high PVA binder content, higher than previously published results for PAA, as well as a very good time stability along the time and low hysteresis.

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Section: Introductionmentioning

confidence: 99%

Enhancing Polyantimonic-Based Materials’ Moisture Response with Binder Content Tuning

Mendes,

Kurapova,

Faia

2023

Chemosensors

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“…These surface changes were encountered by its impact and reflection in the changes of electrical measurements. However, the sensing ability and the mechanism of action were greatly influenced by the particle size, porosity, morphology and the synthesis technique [20]. The response and recovery characteristic of the synthesized ZnO nanoparticles towards humidity sensing nature was analyzed by varying the RH% from 5% to 98%.…”

Section: Fig 7 Humidity Sensing Ability Of Zno Nanoparticlesmentioning

confidence: 99%

Facile Synthesis of Zinc Oxide Nanoparticles with Antibacterial, Humidity Sensing and Photocatalytic Behaviour

Renukadevi¹,

Sundaram²

2019

IJRAT

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Synthesis of zinc oxide (ZnO) nanoparticles was carried out by simple co-precipitation technique. The synthesized ZnO nanoparticles were characterized by powder X-Ray Diffraction (XRD) for phase analysis, Scanning electron microscopy (SEM) for morphology, Dynamic light scattering (DLS) for particle size analysis, Ultra-violet absorption spectra for optical properties. The antibacterial activity of the synthesized ZnO nanoparticles was assessed against both the gram-positive and gram-negative bacterial strains. Staphylococcus aureus and Escherichia coli were test pathogens under study that were tested for its bacterial growth against synthesized ZnO nanoparticles. The ZnO nanoparticles shows prominent zone of inhibition towards growth of bacteria's. The humidity sensing capability of synthesized ZnO nanoparticles was analyzed at different relative humidity ranges. It exhibits the sensitivity factor of 922 with quick response and recovery characteristics. The photocatalytic ability was analyzed using synthesized ZnO nanoparticles as photocatalyst for the degradation of an organic dye -Rhodamine B (Rh B) under visible light source. The degradation efficiency was above 98% within 45 minutes of irradiation, this proves the stupendous degradation of the Rh B dye solution.

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Preparation of Ceramic Humidity Sensors by Electrospinning and Sintering: a Promising Alternative

Cited by 2 publications

References 4 publications

Enhancing Polyantimonic-Based Materials’ Moisture Response with Binder Content Tuning

Enhancing Polyantimonic-Based Materials’ Moisture Response with Binder Content Tuning

Facile Synthesis of Zinc Oxide Nanoparticles with Antibacterial, Humidity Sensing and Photocatalytic Behaviour

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