Superior positive relative humidity sensing properties of porous nanostructured Al:ZnO thin films deposited by jet-atomizer spray pyrolysis technique

Kundu, Sukumar; Majumder, Rahul; Ghosh, Ria; Chowdhury, Manish Pal

doi:10.1007/s10854-019-00754-x

Cited by 17 publications

(6 citation statements)

References 29 publications

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“…In recent years, one-dimensional (1D) nanoscale materials (Djurišić et al 2012;Khranovskyy and Yakimova 2012;Zhang et al 2012aZhang et al , b, c, 2013Zhang et al , 2016aZhang et al , b, c, 2017aWang et al 2018) have received considerable attention due to their remarkable properties (Kundu et al 2019) that are useful in antimicrobial activity (Chen et al 2019;Dimapilis et al 2018;Smeraldi et al 2017), optoelectronic (Chang et al 2012;Wang 2004;Orlov et al 2016) and nanoelectronic devices (Prakash et al 2008;Park et al 2016;Peng et al 2018), and electrochemical and electromechanical devices (Sarangi 2016;Sarahnaz et al 2013;Sun and Sirringhaus 2005;Choi et al 2009;Zhang et al 2016aZhang et al , b, c, 2015. ZnO nanomaterials such as ZnO nanorods (Sun et al 2006), ZnO nanoneedles (Zhang et al 2013a, b), ZnO nanoflowers (Wahab et al 2007;Khokra et al 2017;Kumar et al 2019) have been intensively investigated in environmental applications (Zanni et al 2017;Zhang et al 2019Zhang et al , 2018Medina et al 2018;Sirelkhatim et al 2015;Udom et al 2013) due to their remarkable properties, e.g., wide direct-band gap (E g 3.37 eV), large exciton binding energy (60 meV) and high melting point.…”

Section: Introductionmentioning

confidence: 99%

One-pot synthesis of multifunctional ZnO nanomaterials: study of superhydrophobicity and UV photosensing property

et al. 2019

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ZnO nanomaterials are synthesized using one-pot synthesis method. Equimolar solution of Zinc Nitrate hexahydrate (Zn(NO 3 ) 2 .6H 2 O) and Hexamethylenetetramine (C 6 H 12 N 4 ) is used as a precursor for ZnO formation. Different nanostructures of ZnO are achieved by controlling the pH of the growth solution in the range 2-12 (acidic to alkali). ZnO nanostructures are evaluated for hydrophobic property using static contact angle measurement setup and UV photosensing activity. Surface morphology, structural properties and compositional analysis of ZnO nanostructures are examined by field emission scanning electron microscope (FE-SEM), energy dispersive X-ray analysis (EDX), high-resolution transmission electron microscope (FEG-TEM) and X-ray diffraction (XRD) measurements. Existence of ZnO wurtzite structure is confirmed from XRD study and is analyzed by Rietveld refinement method. Nanomaterials are characterized using Raman spectroscopy which confirms highest oxygen deficiency in ZnO nanorods. The material shows remarkable superhydrophobic and UV photosensing property and hence the name multifunctional. Among all morphologies grown at different pH values, ZnO nanorods show superhydrophobic nature with contact angle more than 170°. Total surface energy value of ZnO nanostructures is calculated using Wendt two-component theory. Different ZnO nanostructures (with variation of pH value) are used to study UV photosensing property. Responsivity and photocurrent show a strong dependence on the morphology of ZnO.

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Section: Introductionmentioning

confidence: 99%

One-pot synthesis of multifunctional ZnO nanomaterials: study of superhydrophobicity and UV photosensing property

et al. 2019

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“…[11][12][13][14] Polyaniline (PANI), one of notably used ICPs, is considerably utilized for NH 3 gas sensing applications because of its superior conductivity, exceptional environmental stability, and outstanding responsivity to NH 3 . [15][16][17][18][19] In order to enhance their sensing performance, the combination of carbon-based materials, such as carbon nanotube, graphene, or metal oxide, such as CeO 2 , In 2 O 3 , SnO 2 , WO 3 , into ICPs can improve the sensing responses of prepared materials. [20][21][22][23] For example, Wu et al synthesized a ternary composite including conducting PANI, In 2 O 3 , and a carbon-based material, one-dimensional graphene nanoribbon.…”

Section: Introductionmentioning

confidence: 99%

“…Among these organic materials, intrinsically conducting polymers (ICPs) have recently received considerable considerations in a variety of applications, such as gas sensor field, electronics, and biomedical devices 11–14 . Polyaniline (PANI), one of notably used ICPs, is considerably utilized for NH 3 gas sensing applications because of its superior conductivity, exceptional environmental stability, and outstanding responsivity to NH 3 15–19 . In order to enhance their sensing performance, the combination of carbon‐based materials, such as carbon nanotube, graphene, or metal oxide, such as CeO 2 , In 2 O 3 , SnO 2 , WO 3 , into ICPs can improve the sensing responses of prepared materials 20–23 .…”

Section: Introductionmentioning

confidence: 99%

The room temperature highly sensitive ammonia gas sensor based on polyaniline and nitrogen doped graphene quantum dot coated flower‐like tungsten oxide composite

Huang,

Liu,

Hsu

et al. 2024

J of Applied Polymer Sci

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In this study, the newly synthesized polyaniline (PANI)/polyethylenimine modified nitrogen doped graphene quantum dot (PN‐GQD)/tungsten oxide (WO3) ternary composites were used as ammonia (NH3) gas sensor detected the NH3 at room temperature. Fourier transform infrared spectrometer, field‐emission scanning electron microscopy, transmission electron microscopy, and x‐ray photoelectron spectroscopy were applied to illustrate the chemical structure and morphology of the fabricated ternary composites. The NH3 gas‐sensing performances of PANI/PN‐GQD/WO3 composite sensor were determined in the concentration between 0.6 and 2.0 ppm at room temperature and the response value of the ternary composite sensor with an exposure of 1.0 ppm NH3 was 19.9, which was much better than those of PANI and PANI/WO3 sensors. Because their highly sensitive detection of NH3 ranging from the concentration between 0.6 and 2.0 ppm at room temperature, the PANI/PN‐GQD/WO3 composite sensor was confirmed to be extremely effective to detect the kidney or hepatic disease from the human breath. This ternary composite sensor with an exposure of 1.0 and 2.0 ppm NH3 also displayed extraordinary repeatability and selectivity at room temperature. According to these findings, this fabricated PANI/PN‐GQD/WO3 composite sensor will be an excellent gas‐sensing material to detect the kidney or hepatic disease from the human breath.

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“…However, the gas sensors can be classified into three main types depending on the mode of action, that is, resistive, capacitive, or FET type. In the constant development process of the sensors, the materials, which seek the most attention, are metal oxide semiconductors (e.g., ZnO, TiO 2 , and SnO 2 ), 9,10 polymers (e.g., polypyrrole, polyaniline, and PEDOT:PSS); 11 and carbon‐based materials (e.g., CNT, rGO, and graphene nanofibers) 12 . Metal oxide semiconductors (MOS) are considered to be as promising gas sensing materials for the detection of harmful gases owing to their few advantages like high sensitivity, rapid response, long‐term stability, easy integration capability, and above all low cost 13 .…”

Section: Introductionmentioning

confidence: 99%

Superior ammonia sensing properties of PET‐supported polyaniline/reduced graphene oxide/zinc ferrite ternary nanocomposite thin film at room temperature

Kundu,

Majumder,

Pal Chowdhury

2023

J of Applied Polymer Sci

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This article introduces a ternary nanocomposite‐based flexible thin film ammonia sensor developed on transparent polyethylene terephthalate (PET) substrate in the well‐known in situ chemical oxidative polymerization technique. The nanocomposite consists of three different materials: polyaniline (PANI), reduced graphene oxide (rGO), and zinc ferrite (ZF). Keeping the PANI amount constant, seven PANI/rGO/ZF (PRZ) samples are produced by performing stoichiometric variation between rGO and ZF. Later on, various structural, morphological, and spectroscopic analysis of all the composite materials is accomplished with field emission scanning electron microscopy (FESEM), high‐resolution transmission electron microscopy (HRTEM), X‐ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), and ultraviolet–visible spectroscopy (UV–Vis). The sensing performance of the as‐produced sensors toward ammonia (NH3) is examined in the concentration range from 250 ppb to 100 ppm. The study reveals the excellent sensing ability of the PRZ3 sensor (rGO = 30%, ZF = 20%) achieving minimum and maximum responsivity values of ~51% and ~1052%, respectively, at the lowest (250 ppb) and highest (100 ppm) concentration of ammonia. The sensor also exhibits admirable repeatability, good dynamic responsivity, rapid response (tres ~2.9–5 s), moderately faster recovery (trec ~37.9–69.7 s), superb linearity against ppm variation (R2 ~ 0.989), low detection limit (~123 ppb), and exceptional selectivity toward ammonia. The substrate temperature variation divulges that room temperature (30°C) is the ideal temperature for getting outstanding responsivity of the sensor. The study is further accompanied by humidity variation in the incoming air and bending flexibility test of the substrate. A compulsory and legitimate model regarding the sensing mechanism is presented at the end.

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Superior positive relative humidity sensing properties of porous nanostructured Al:ZnO thin films deposited by jet-atomizer spray pyrolysis technique

Cited by 17 publications

References 29 publications

One-pot synthesis of multifunctional ZnO nanomaterials: study of superhydrophobicity and UV photosensing property

One-pot synthesis of multifunctional ZnO nanomaterials: study of superhydrophobicity and UV photosensing property

The room temperature highly sensitive ammonia gas sensor based on polyaniline and nitrogen doped graphene quantum dot coated flower‐like tungsten oxide composite

Superior ammonia sensing properties of PET‐supported polyaniline/reduced graphene oxide/zinc ferrite ternary nanocomposite thin film at room temperature

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