Shape selective comprehensive gas sensing study of different morphological manganese-cobalt oxide based nanocomposite as potential room temperature hydrogen gas sensor

Maji, Banalata; Barik, Bapun; Sahoo, Shital Jyotsna; Achary, L. Satish K.; Sahoo, Kiran kumar; Kar, Jyoti Prakash; Dash, Priyabrat

doi:10.1016/j.snb.2023.133348

Cited by 11 publications

(6 citation statements)

References 67 publications

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“…Initially, GO was synthesized by an improved Hummers’ method using graphite powder as the source as reported previously . After synthesizing the brown-colored GO, 350 mg of GO was taken and thermally reduced in a muffle furnace at 350 °C for 1 h to obtain rGO with an n-type semiconducting behavior …”

Section: Methodsmentioning

confidence: 99%

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Effect of a Ni-Substituted Cu-MOF Precursor toward Efficient NO₂ Gas Detection: A Comprehensive Comparative Gas-Sensing Study of MOF-Derived and Traditionally Synthesized CuO/NiO-Based Nanocomposites

Sahoo,

Das,

Maji

et al. 2024

ACS Appl. Electron. Mater.

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With the progression of research on gas sensors, numerous studies are being carried out on the tuning of metal−organic framework (MOF)-derived semiconductor metal oxides (SMOs) for gas-sensing studies in lieu of traditionally synthesized SMOs to attain the desired result at lower temperatures and enhance the sensor response. Still, no comparative gassensing study between traditionally synthesized SMOs and MOF-derived SMOs has been conducted to understand the reasons behind such a higher activity. To gain insights into the enhanced activity and find the reasons behind the improved sensor response, a comparative gas-sensing study was carried out using octahedral Cu-MOF as a template to fabricate an MOF-derived CuO/ NiO (CuO/NiOM) heterostructure and traditionally synthesized CuO/NiO (CuO/NiOD) heterostructure via the combustion route. More importantly, our study revealed that the substitution of Ni 2+ ions into the MOF template did not destroy the porous hierarchical framework of Cu-MOF either during the calcination process or when the Ni 2+ ions were added into the precursor medium. A higher surface area (35 m 2 /g) and porosity obtained during the process would have provided sufficient permeability channels for the sorption of NO 2 molecules, leading to the formation of the maximum concentration of active sites. Our results revealed that MOF-template-derived CuO/NiOM showed a comparatively higher response of S% = 13.9%, with response and recovery times of 18 and 29 s, respectively, at a temperature of 110 °C compared to traditionally synthesized CuO/NiOD. Further, to attain efficient room-temperature activity with a higher sensor response and lower response and recovery times, a p−n heterojunction was formed at their interface by modifying n-type thermally reduced graphene oxide (rGO) with CuO/NiOM. The rGO-CuO/NiOM gas sensor showed a p-type behavior with a comparatively higher response of 23.9% toward 60 ppm of NO 2 at room temperature, with the lowest response and recovery times of 10 and 15 s, respectively. In addition, the sensor also possessed ultralow detection ability up to 5 ppm of NO 2 with fast response and recovery.

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Section: Methodsmentioning

confidence: 99%

“…51 After synthesizing the brown-colored GO, 350 mg of GO was taken and thermally reduced in a muffle furnace at 350 °C for 1 h to obtain rGO with an n-type semiconducting behavior. 52 2.5. Preparation of rGO and MOF-Derived CuO/NiO Oxide Nanocomposites.…”

Section: Preparation Of Reduced Graphene Oxide (Rgo)mentioning

confidence: 99%

Effect of a Ni-Substituted Cu-MOF Precursor toward Efficient NO₂ Gas Detection: A Comprehensive Comparative Gas-Sensing Study of MOF-Derived and Traditionally Synthesized CuO/NiO-Based Nanocomposites

Sahoo,

Das,

Maji

et al. 2024

ACS Appl. Electron. Mater.

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“…14,15 To date, several studies have utilized sensitive materials to enhance gas-sensing performance by modifying morphology, surface structure, surface area, size, porosity, dopants, and charge concentration with different dopants for various applications. 8,16,17 The surface area of MOS materials, including nanoparticles, polyhedral, nanowires, or nanosheets, is significantly influenced by their morphology and multi- faceted structures. 18 Polyhedral structures composed of multiple interconnected nanocrystals offer promising gassensing applications due to increased active sites available for gas adsorption and chemical reactions, thereby improving sensitivity and selectivity.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Metal oxide semiconductor (MOS)-based chemiresistive sensors are widely used for gas detection due to their ease of use, low cost, and compatibility with modern technology. , In recent years, various gas-sensing materials like conducting polymers, metal oxides, and carbon nanomaterials have been utilized as solid-state gas-sensitive materials. ,, Among them, copper oxide (CuO), a p-type gas-sensing material with a minimum bandgap energy of 1.2 eV, exhibits exceptional sensing properties, making it a highly advantageous material . Moreover, CuO is a highly effective material for adsorbing a significant amount of oxygen molecules and exhibits variable oxidation states (Cu + and Cu 2+ ). , To date, several studies have utilized sensitive materials to enhance gas-sensing performance by modifying morphology, surface structure, surface area, size, porosity, dopants, and charge concentration with different dopants for various applications. ,, The surface area of MOS materials, including nanoparticles, polyhedral, nanowires, or nanosheets, is significantly influenced by their morphology and multifaceted structures . Polyhedral structures composed of multiple interconnected nanocrystals offer promising gas-sensing applications due to increased active sites available for gas adsorption and chemical reactions, thereby improving sensitivity and selectivity .…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Diethylamine Detection at Room Temperature Using g-C₃N₄ Nanosheets Decorated with CuO Hollow Polyhedral Structures

Hussain,

Suleiman,

Liu

et al. 2024

Anal. Chem.

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Chemiresistive-based metal oxide semiconductor (MOS) gas sensors are widely used in gas sensing due to their advantageous properties. Graphitic carbon nitride (g-C 3 N 4 ) and metal oxide heterostructure materials can improve charge transport properties, selectivity, and sensitivity in MOS gas sensor materials. Herein, for the first time, CuO hollow polyhedral structures (HPSs) were synthesized via a hydrothermal technique and annealed at different temperatures, with the 400 °C annealed (CuO-400 HPSs) demonstrating remarkable sensing capabilities for diethylamine (DEA) gas at room temperature (RT). The x-g-C 3 N 4 nanosheets were decorated with CuO HPSs in varying amounts (x = 0.8, 1.8, 2.1, and 3.1 wt %) and then annealed at 400 °C for x-g-C 3 N 4 -CuO-400 hollow polyhedral heterostructures (HPHSs). Indeed, among the synthesized samples, the 1.8%-g-C 3 N 4 -CuO-400 HPHSs have a higher sensitivity to DEA (resistance change in gas (R g ) and air (R a ); R g /R a = 65 @ 20 ppm), a low detection limit (R g /R a = 6 @ 500 ppb), wide dynamic response (R g /R a = 190 @ 80 ppm), strong stability (30 days), and 21.6 times higher sensitivity than pure CuO at RT toward 20 ppm of DEA. The exceptional gas-sensing behavior can be attributed to various factors, including controlled annealing conditions that result in the formation of well-defined structures and greater porosity, efficient charge transfer properties resulting from an optimized ratio of g-C 3 N 4 to CuO in HPHSs, an abundance of defects, unsaturated Cu sites, and synergistic effects. The study presents a universal strategy for generating sensitive and selective g-C 3 N 4 -based composite materials for low-temperature gas sensors.

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“…A fairly common procedure, often used in chemical sensor technology, is to apply an additional, thin layer of a catalyst (Au, Pt, or Pd) that determines the gas sensing effect itself [20,21]. Moreover, a well-known method used to improve the performance of gas sensors is the application of mixed oxides such as WO 3 -SnO 2 [22], ZnO-NiO [23], ZnO-CuO [24], ZrO 2 -Y 2 O 3 [25], and MnCo 2 O 4 [26].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Gas Sensing Properties of Mixed Copper–Titanium Oxide Thin Films

Mańkowska

Mazur

Domaradzki

et al. 2023

Sensors

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Hydrogen is an efficient source of clean and environmentally friendly energy. However, because it is explosive at concentrations higher than 4%, safety issues are a great concern. As its applications are extended, the need for the production of reliable monitoring systems is urgent. In this work, mixed copper–titanium oxide ((CuTi)Ox) thin films with various copper concentrations (0–100 at.%), deposited by magnetron sputtering and annealed at 473 K, were investigated as a prospective hydrogen gas sensing material. Scanning electron microscopy was applied to determine the morphology of the thin films. Their structure and chemical composition were investigated by X-ray diffraction and X-ray photoelectron spectroscopy, respectively. The prepared films were nanocrystalline mixtures of metallic copper, cuprous oxide, and titanium anatase in the bulk, whereas at the surface only cupric oxide was found. In comparison to the literature, the (CuTi)Ox thin films already showed a sensor response to hydrogen at a relatively low operating temperature of 473 K without using any extra catalyst. The best sensor response and sensitivity to hydrogen gas were found in the mixed copper–titanium oxides containing similar atomic concentrations of both metals, i.e., 41/59 and 56/44 of Cu/Ti. Most probably, this effect is related to their similar morphology and to the simultaneous presence of Cu and Cu2O crystals in these mixed oxide films. In particular, the studies of surface oxidation state revealed that it was the same for all annealed films and consisted only of CuO. However, in view of their crystalline structure, they consisted of Cu and Cu2O nanocrystals in the thin film volume.

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Shape selective comprehensive gas sensing study of different morphological manganese-cobalt oxide based nanocomposite as potential room temperature hydrogen gas sensor

Cited by 11 publications

References 67 publications

Effect of a Ni-Substituted Cu-MOF Precursor toward Efficient NO₂ Gas Detection: A Comprehensive Comparative Gas-Sensing Study of MOF-Derived and Traditionally Synthesized CuO/NiO-Based Nanocomposites

Effect of a Ni-Substituted Cu-MOF Precursor toward Efficient NO₂ Gas Detection: A Comprehensive Comparative Gas-Sensing Study of MOF-Derived and Traditionally Synthesized CuO/NiO-Based Nanocomposites

Highly Sensitive Diethylamine Detection at Room Temperature Using g-C₃N₄ Nanosheets Decorated with CuO Hollow Polyhedral Structures

Hydrogen Gas Sensing Properties of Mixed Copper–Titanium Oxide Thin Films

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Shape selective comprehensive gas sensing study of different morphological manganese-cobalt oxide based nanocomposite as potential room temperature hydrogen gas sensor

Cited by 11 publications

References 67 publications

Effect of a Ni-Substituted Cu-MOF Precursor toward Efficient NO2 Gas Detection: A Comprehensive Comparative Gas-Sensing Study of MOF-Derived and Traditionally Synthesized CuO/NiO-Based Nanocomposites

Effect of a Ni-Substituted Cu-MOF Precursor toward Efficient NO2 Gas Detection: A Comprehensive Comparative Gas-Sensing Study of MOF-Derived and Traditionally Synthesized CuO/NiO-Based Nanocomposites

Highly Sensitive Diethylamine Detection at Room Temperature Using g-C3N4 Nanosheets Decorated with CuO Hollow Polyhedral Structures

Hydrogen Gas Sensing Properties of Mixed Copper–Titanium Oxide Thin Films

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Effect of a Ni-Substituted Cu-MOF Precursor toward Efficient NO₂ Gas Detection: A Comprehensive Comparative Gas-Sensing Study of MOF-Derived and Traditionally Synthesized CuO/NiO-Based Nanocomposites

Effect of a Ni-Substituted Cu-MOF Precursor toward Efficient NO₂ Gas Detection: A Comprehensive Comparative Gas-Sensing Study of MOF-Derived and Traditionally Synthesized CuO/NiO-Based Nanocomposites

Highly Sensitive Diethylamine Detection at Room Temperature Using g-C₃N₄ Nanosheets Decorated with CuO Hollow Polyhedral Structures