Synthesis and characterization of Znx-1Al2O4(TiO2)x nanocomposite ceramics and their humidity sensing properties

Dubey, R.S.; Srilali, S.; Ravikiran, Y. T.; Babu, G. Satheesh; Katta, Kartheek

doi:10.1007/s10853-021-06709-0

Cited by 7 publications

(3 citation statements)

References 28 publications

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“…The strong peaks located at 2ϴ =31.80 o and 36.41 o correspond to the face-centered cubic structure of ZnAl 2 O 4 (R.S. Dubey. et al, 2022;Reem S, Khaleel.…”

Section: Resultsmentioning

confidence: 99%

Sol-gel Synthesis of CaZnAl2O4 Ceramic Nanoparticles and Investigation of their Properties

Didde¹,

Dubey²,

Panda

2022

KJS publishes peer-review articles in Mathematics, Computer Sci

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Dielectric ceramic materials are well-recognized in the semiconductor industry because of their exceptional thermal stability, chemical resistance, and crystallinity. Despite their potential applications, these are also demanded in wireless communication. This paper reports the structural, morphological, and dielectric properties of sol-gel-derived CaZnAl2O4 ceramic nanoparticles. X-ray diffraction (XRD) analysis exhibited the polycrystalline characteristic of the CaZnAl2O4 nanoparticles with their crystallite size of 13 nm. Fourier-Transform infrared spectroscopy (FTIR) analysis confirmed the relevant vibration peaks of various functional groups present in the ceramic nanoparticles. Surface morphology study demonstrated the preparation of spherical grains with their mean diameter of 16 nm. The concentric rings also confirm the crystallinity of the nanoparticles that appeared in the selected area diffraction pattern. Furthermore, dielectric properties investigation showed the variation of dielectric permittivity from 23.76 to 21.67 as a function of increased frequency. Similarly, the dielectric loss is found to decrease from 0.047 to 0.039. As a result, the conductivity increased from 1.324 μS/m to 3.639 μS/m as a function of applied frequency.

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“…The strong peaks located at 2ϴ =31.80 o and 36.41 o correspond to the face-centered cubic structure of ZnAl 2 O 4 (R.S. Dubey. et al, 2022;Reem S, Khaleel.…”

Section: Resultsmentioning

confidence: 99%

Sol-gel Synthesis of CaZnAl2O4 Ceramic Nanoparticles and Investigation of their Properties

Didde¹,

Dubey²,

Panda

2022

KJS publishes peer-review articles in Mathematics, Computer Sci

View full text Add to dashboard Cite

show abstract

“…This innovative approach seeks to improve some of the difficulties linked with conventional humidity sensors including large response times and limited sensitivity. [12][13][14] By combining the structural benefits of mesoporous materials like TUD-1 with the sensing ability of ZnO, the developed sensor not only performs exceptionally well but also offers improved reliability and durability over a time domain with minimal hysteresis. [15][16][17][18][19] In this investigation, we delve into the intricate details of the sensor with cheap fabrication and ease of utility.…”

Section: Introductionmentioning

confidence: 99%

A three-dimensional ZnO/TUD-1 nanocomposite-based multifunctional sensor for humidity detection and wastewater remediation

Boora,

Duhan,

Rohilla

et al. 2024

Mater. Adv.

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“…[1][2][3][4] The performance of the humidity sensor mainly depends on the humidity-sensitive properties of the material itself, humiditysensitive material is the significant core of the humidity sensor technology. Various types of humidity sensors, such as electrolytes, 5 polymers, 6 semiconductors, 7 ceramics, 8 carbon materials, 9 and composites, 10 exhibit diverse humidity sensitivity properties determined by variations in the characteristics of the humidity-sensitive materials. Polymer-based humidity sensors are a popular choice among the various types of humidity sensors owing to their ease of fabrication and remarkable performance.…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotubes for optimizing response stability and speed of acrylate hybrid copolymers humidity sensor

Yu,

Hu,

et al. 2024

Polymer Composites

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Carbon nanotubes (CNTs) are one‐dimensional nanomaterials with a hollow structure, high specific surface area and excellent chemical conductivity, which show great potential for application in the field of humidity‐sensitive responsive materials and humidity sensors. In this paper, CNTs were composited with a hybrid copolymer (HAC) of octavinyl POSS/acrylate to prepare the hybrid copolymer composites HAC/CNTs and their humidity sensors, which demonstrated exceptional thermal stability and fast response speed. Among them, acrylic resin serves as a humidity‐sensitive material; POSS introduce a stable three‐dimensional cage skeleton structure to the material; and CNTs are used as conductive fillers, which further enhance the stability of the material, as well as improve the sensitivity and humidity‐sensitive response speed of the material. The experimental findings indicate that the HAC/8.0% CNTs composite material exhibits a remarkable sensitivity of 119.94 KΩ/%RH within the humidity range of 11%–95%RH. Compared with HAC, HAC/8.0% CNTs demonstrate a significant reduction in response/recovery time from 16.0 s/70.0 s to 0.8 s/80.0 s, representing a considerable improvement in response speed; the wet hysteresis is reduced from 0.88 %RH to 0.77 %RH; and the temperature change coefficient is reduced from 0.035 %RH/°C to 0.008 %RH/°C over the temperature range of 20–60°C, indicating superior stability against temperature variation. Meanwhile, the humidity response mechanism of HAC/CNTs was discussed by using complex impedance spectrum. The hybrid copolymer composites, HAC/CNTs, that were prepared in this study have tremendous potential in the development of advanced, high‐performance, and miniaturizable humidity sensing technologies.Highlights A hybrid copolymer composite humidity‐sensitive material HAC/CNTs is prepared. HAC/CNTs are compounds consisting of CNTs and POSS/acrylate hybrid copolymer. POSS improve the skeleton structural stability of acrylic resins. CNTs enhance the sensitivity and response speed of humidity sensor. The HAC/8.0% CNTs have higher response stability and faster response speed.

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Synthesis and characterization of Znx-1Al2O4(TiO2)x nanocomposite ceramics and their humidity sensing properties

Cited by 7 publications

References 28 publications

Sol-gel Synthesis of CaZnAl2O4 Ceramic Nanoparticles and Investigation of their Properties

Sol-gel Synthesis of CaZnAl2O4 Ceramic Nanoparticles and Investigation of their Properties

A three-dimensional ZnO/TUD-1 nanocomposite-based multifunctional sensor for humidity detection and wastewater remediation

Carbon nanotubes for optimizing response stability and speed of acrylate hybrid copolymers humidity sensor

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