Humic acid nanosheets decorated by tin oxide nanoparticles and there humidity sensing behavior

Duraia, El‐Shazly M.; Das, Sayantan; Beall, Gary W.

doi:10.1016/j.snb.2018.10.054

Cited by 22 publications

(3 citation statements)

References 29 publications

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“…Moreover, a wider expansion of aspects of sensing media could be compatible with the as-fabricated SOFS. Tin oxide, as a humidity-sensitive material, has already been used in humidity sensing [36][37][38][39][40][41]. Combining sensitive materials and MNFs embedded with PDMS could be a potential application in wearable sensors, such as in breathing masks and pulse monitors.…”

Section: Concept and Principle Of The Sofsmentioning

confidence: 99%

An Ultra-Sensitive Multi-Functional Optical Micro/Nanofiber Based on Stretchable Encapsulation

Xiang

You

Miao

et al. 2021

Sensors

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Stretchable optical fiber sensors (SOFSs), which are promising and ultra-sensitive next-generation sensors, have achieved prominent success in applications including health monitoring, robotics, and biological–electronic interfaces. Here, we report an ultra-sensitive multi-functional optical micro/nanofiber embedded with a flexible polydimethylsiloxane (PDMS) membrane, which is compatible with wearable optical sensors. Based on the effect of a strong evanescent field, the as-fabricated SOFS is highly sensitive to strain, achieving high sensitivity with a peak gauge factor of 450. In addition, considering the large negative thermo-optic coefficient of PDMS, temperature measurements in the range of 30 to 60 °C were realized, resulting in a 0.02 dBm/°C response. In addition, wide-range detection of humidity was demonstrated by a peak sensitivity of 0.5 dB/% RH, with less than 10% variation at each humidity stage. The robust sensing performance, together with the flexibility, enables the real-time monitoring of pulse, body temperature, and respiration. This as-fabricated SOFS provides significant potential for the practical application of wearable healthcare sensors.

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Section: Concept and Principle Of The Sofsmentioning

confidence: 99%

An Ultra-Sensitive Multi-Functional Optical Micro/Nanofiber Based on Stretchable Encapsulation

Xiang

You

Miao

et al. 2021

Sensors

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“…Los semiconductores de óxido metálico tienen mayor sensibili-* perillo@cnea.gov.ar dad y estabilidad que los polímeros [2,3]. Varios materiales semiconductores como ZnO [4,5], SnO 2 [6][7][8], grafeno [9,10], nanotubos de carbono [11], TiO 2 [12,13] y CuO [14,15] han sido ampliamente estudiados para detectar la humedad.…”

Section: Introductionunclassified

HUMIDITY SENSOR USING CuO NANORICES THIN FILM

Perillo

Rodriguez²

2021

AnAFA

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In this paper, a humidity sensor based on CuO has been successfully fabricated. Thin-film of CuO nanorices were synthesized by Successive Ionic Layer Adsorption and Reaction (SILAR) method on silicon wafer with Si3N4thinlayer as a substrate. The microstructure and morphology of the samples were investigated using X-ray diffraction(XRD) and scanning electron microscopy (SEM). Humidity sensing properties of the thin films have been studied. The sensing response has been measured in the relative humidity (RH) range from 20 up to 80 % at room temperature. It was found that impedance of the system decreases as the RH was increased. The prepared sensor revealed good reversibility with response and recovery time of 130 s and 320 s respectively. The complex impedance spectra were analyzed in the range of 0.1 to 1 kHz. This type of humidity sensor can be used as a new generation of ecological sensors with low cost and good stability. It makes the sensor a candidate for practical applications.

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“…Among carbon nanomaterials, carbon nanotubes are one of the considerable popular candidates, 16,17 mainly due to their remarkable and superior mechanical, 18 thermal, 19 high tuneable specific surface area, and electrical conductivity. 20 Generally, nanoscale carbon materials such as graphene oxide (GO), [21][22][23] graphene, 24,25 humic acid (HA), [26][27][28] porous nano-carbon 29 and CNTs 30 are intensively studied with metal oxides as hybrids and currently considered as hot research topics among the scientific community.Wang et al 31 reported hierarchical NiCo 2 O 4 -CoNiO 2 hybrids embedded in a partially reduced graphene oxide (rGO) modified electrode for H 2 O 2 released from human lung cancer cells (H460 SP cells). Moreover, Yu et al 32 reported another hydrogen peroxide detection method using electro-deposited film of graphene oxides/gold nanoclusters onto the indium tin oxides (ITO) electrodes for the continuous monitoring the biological release of hydrogen peroxides from the bupivacaine-injured neuroblastoma cells.…”

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confidence: 99%

Synthesis, Characterization, and Electrochemical Sensing Applications of Bimetallic Oxide/Carbon Nanomaterials Hybrids

Yousf¹,

Ouda²,

Magar³

et al. 2022

J. Electrochem. Soc.

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Bimetallic oxide/carbon nanomaterials hybrids were chemically synthesized and fully characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The elemental data analysis confirmed the successful formation of MnCo2O4/carbon nanomaterials. The fingerprint area of FTIR showed the incorporation of the metal oxides onto CNTs and GO surfaces. Morphological investigations of the nanocomposites, using FESEM and HRTEM, revealed the uniform distribution of bimetallic oxide nanostructures over the surface of carbon nanomaterials. Furthermore, electrochemical characteristics were explored using the CV and EIS. The obtained electrochemical results demonstrated significant improvements in the electrocatalytic properties, in addition to the direct and fast electron transfer provided by the modified surfaces whereas MnCo2O4/CNTs were exploited for the nano-enzymatic detection of hydrogen peroxide as an example to show the promising applications of such materials in designing non-enzymatic sensors and biosensors.

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Humic acid nanosheets decorated by tin oxide nanoparticles and there humidity sensing behavior

Cited by 22 publications

References 29 publications

An Ultra-Sensitive Multi-Functional Optical Micro/Nanofiber Based on Stretchable Encapsulation

An Ultra-Sensitive Multi-Functional Optical Micro/Nanofiber Based on Stretchable Encapsulation

HUMIDITY SENSOR USING CuO NANORICES THIN FILM

Synthesis, Characterization, and Electrochemical Sensing Applications of Bimetallic Oxide/Carbon Nanomaterials Hybrids

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