Properties of NiO nanostructured growth using thermal dry oxidation of nickel metal thin film for hydrogen gas sensing at room temperature

Abubakar, Dauda; Ahmed, Naser M.; Mahmud, Shahrom; Algadri, Natheer A.

doi:10.1088/2053-1591/aa76b1

Cited by 15 publications

(10 citation statements)

References 26 publications

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“…12 The metal chloride has different uses like industrial to product oxides and ferrites. 13 NiO samples have been fabricated using various kinds of techniques, including thermal evaporation, 14 plasma enhanced chemical vapor deposition, 15 sol-gel, 16 sputtering, 17 RF magnetron sputtering, 18 and spray pyrolysis. 19 In this work, the effect of Cu doping ratio with the NiO thin film characterized by means of focusing on structural, optical properties, and electrical has been studied.…”

Section: Introductionmentioning

confidence: 99%

The structural, optical, and morphological properties of NiO‐Cu prepared by spray pyrolysis technique

Mohamad

Abdul‐Husaain²,

Al‐Jarah

2020

Micro & Optical Tech Letters

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The technique of spray pyrolysis used to prepare the pure thin films NiO and NiO:Cu. In this study, the nickel chloride salt solution (NiCl2⋅6H2O) was used to fabricate thin films deposited on a glass substrate. The structural, optical, and morphological fabricated properties of the samples were investigated. X‐ray diffraction reveals a polycrystalline nickel oxide layer with a crystalline cubic form, with (111), (200), and (222). Atomic force microscopic studied the surface morphology of the thin‐film samples. The fabrication process of growth was at the specific doping ratio (0%, 0.5%, 1%, 1.5%, and 2%) where all thin films had a cubic structure. The energy difference for the NiO and NiO:Cu reference samples have ranged from 3.25 to 3.5 eV. The mobility, magnetoresistance, resistivity, and conductivity were measured and presented as well as the relationship between current‐voltage and current‐resistivity.

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Section: Introductionmentioning

confidence: 99%

The structural, optical, and morphological properties of NiO‐Cu prepared by spray pyrolysis technique

Mohamad

Abdul‐Husaain²,

Al‐Jarah

2020

Micro & Optical Tech Letters

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“…Inorganic metal oxide nanoparticles such as ZnO [18], TiO2 [19], CuO [20] and MgO [21] have been widely studied as antibacterial agents. Among these particles, MgO nanoparticle is a unique metal oxide because it shows less toxicity towards hosts and compared to other metal oxide nanoparticles, it possesses various beneficial properties for biomedical applications including antibacterial activity [22,23].…”

Section: Introductionmentioning

confidence: 99%

“…There are various ways to synthesize metal oxide nanoparticles depending on the properties required for a particular application. Physical synthesis methods such as chemical vapor deposition [26], physical vapor deposition [27], laser ablation [28] and radio frequency magnetron sputtering [23,29] are commonly used in the metal oxide nanoparticle synthesis. Likewise, metal oxide nanoparticles are also prepared by chemical methods such as hydrothermal [30], wet-chemical [31], sol-gel [32], polyol [33] and microwave/ultrasound mediated chemical synthesis [34,35].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Antibacterial Activity of MgO Nanoparticles Synthesized from Aqueous Leaf Extract

Jeevanandam¹,

Chan²,

Danquah³

2019

Med One

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Foodborne pathogens especially bacteria cause a vast number of diseases which leads to a high mortality rate in humans. Conventional antibiotics have been employed in an attempt to eradicate these pathogens and this has led to the evolution of a multidrug resistant bacteria strain. Thus, a new genre of antibiotics is prepared by using nanoparticles as they show effective antibacterial capabilities. Biosynthesized nanoparticles are less toxic to humans as compared to chemically synthesized nanoparticles which are prepared using toxic precursors. They also exhibit enhanced antibacterial action along with the biomolecules that help in their formation. Among most metal oxides, magnesium oxide (MgO) nanoparticles show unique antibacterial properties due to their exclusive oxide vacancies and crystalline structure. The antibacterial activity of MgO nanoparticles synthesized using leaf extract is further enhanced by the presence of phytochemicals. The present work is a comparative study of the antibacterial activity of MgO nanoparticles synthesized using three different leaf extracts: (1) Amaranthus tricolor, (2) Amaranthus blitum and (3) Andrographis paniculata and their reaction towards Escherichia coli which is a gram negative, food borne pathogen. The results showed that the ~78 nm spherical shaped MgO nanoparticles synthesized from A. blitum, exhibited the highest antibacterial activity at 60 µL dosage. In addition, the effects of the characteristics of the MgO nanoparticles such as size, morphology, concentration, surface charge and phytochemicals on antibacterial mechanism were also discussed.

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“…Many different types of semiconducting metal oxides have been investigated in the literature as potential materials for fabricating hydrogen gas sensors. These are summarized in Table 1, and mainly include WO3 [11][12][13][14], ZnO [15][16][17][18], NiO [19][20][21], SnO2 [22][23][24], TiO2 [25,26], MoO3 [27,28], CuO [29], MgO [30] and In2O3 [31,32].…”

Section: Introductionmentioning

confidence: 99%

“…H2 + O − (ads) = H2O + e − (100 o C ~ 300 o C) WO3 thin films 200 1000 9 a 60s/80s - [11] WO3 nanosheets 250 1% 80% b 120s/235s - [12] WO3 nanotube 450 500 17.6 a 25s/-10 ppm [13] WO3 thin films 300 3600 1.32 a 12s/40s - [14] ZnO nanorods 180 500 264% b 127s/203s - [15] ZnO nanorods 150 10000 77% b 10s/116s - [16] ZnO nanorods 100 10000 67% b 14s/100s - [17] ZnO nanorod array 250 1000 1370% b 20s/25s - [18] NiO nanostructure 150 1000 119.63% b 6s/0.5s 30 ppm [19] NiO nanowires 300 1000 91% b 88s/39s 50 ppm [20] NiO thin film 175 1000 46.3 a 81s/322s - [21] SnO2 thin film 300 250 28 a 15s/4s 100 ppm [22] SnO2 nanofibers 150 10000 2.4 a 21s/33s 600 ppm [23] Honeycombed SnO2 340 1 8.4 a 4s/10s 0.05 ppm [24] p-TiO2 thin film 150 1000 28.5% b 2.4s/34.6s - [25] TiO2 thin film 225 10000 8100 a 120s/420s - [26] a-MoO3 nanowires 260 15000 0.85 c 3.0s/2.7s 100 ppm [27] CuO NW networks 300 100 340 a 60s/2s - [29] MgO nanocube 200 5000 25.4 a 140 s/130 s - [30] In2O3 flower-like spherical nanostructure 210 100 1.4 a 11s/12s 10 ppm [31] In2O3 nanowires 200 500 0.1 c 31s/80s 500 ppm [32] Note: a : Rair/RH2; b : 100(Rair-RH2)/RH2; c : (Rair-RH2)/RH2 4 Decrease of the electrical resistance of sensors is corresponding to the change of hydrogen concentration. As summarized in Table 1, there are many types of hydrogen gas sensors based on various semiconducting metal oxides.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen gas sensor based on mesoporous In2O3 with fast response/recovery and ppb level detection limit

Yan

et al. 2018

International Journal of Hydrogen Energy

123

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2018) Hydrogen gas sensor based on mesoporous In2O3 with fast response/recovery and ppb level detection limit. International Journal of Hydrogen Energy, 43 (50). AbstractHydrogen gas sensors were fabricated using mesoporous In2O3 synthesized using hydrothermal reaction and calcination processes. Their best performance for the hydrogen detection was found at a working temperature of 260 o C with a high response of 18.0 toward 500 ppm hydrogen, fast response/recovery times (e.g. 1.7 s/1.5 s for 500 ppm hydrogen), and a low detection limit down to 10 ppb. Using air as the carrier gas, the mesoporous In2O3 sensors exhibited good reversibility and repeatability towards hydrogen gas. They also showed a good selectivity for hydrogen compared to other commonly investigated gases including NH3, CO, ethyl alcohol, ethyl acetate, styrene, CH2Cl2 and formaldehyde. In addition, the sensors showed good long-term stability. The good sensing performance of these hydrogen sensors is attributed to the formation of mesoporous structures, large specific surface areas and numerous chemisorbed oxygen ions on the surfaces of the mesoporous In2O3.

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Properties of NiO nanostructured growth using thermal dry oxidation of nickel metal thin film for hydrogen gas sensing at room temperature

Cited by 15 publications

References 26 publications

The structural, optical, and morphological properties of NiO‐Cu prepared by spray pyrolysis technique

The structural, optical, and morphological properties of NiO‐Cu prepared by spray pyrolysis technique

Evaluating the Antibacterial Activity of MgO Nanoparticles Synthesized from Aqueous Leaf Extract

Hydrogen gas sensor based on mesoporous In2O3 with fast response/recovery and ppb level detection limit

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