Efficient room temperature detection of H2 gas by novel ZnFe2O4–Pd decorated rGO nanocomposite

Achary, L. Satish K.; Maji, Banalata; Kumar, Aniket; Ghosh, Subhojit; Kar, Jyoti Prakash; Dash, Priyabrat

doi:10.1016/j.ijhydene.2019.12.048

Cited by 41 publications

(9 citation statements)

References 48 publications

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“…Besides the more common graphene modifications with SnO 2 or ZnO, papers can also be found where authors examine the influence of In 2 O 3 , TiO 2 , NiO, LiTaO 3 , ZnFe 2 O 4 , and CuO modifiers on H 2 sensing [55,[131][132][133][134][135]. Mansha et al present the synthesis of an In 2 O 3 /graphene heterostructure and its hydrogen gas sensing properties.…”

Section: Graphene-metal Oxide Nanocompositementioning

confidence: 99%

“…Such based H 2 sensor ensures high sensitivity with a short response/recovery times, and reversibility towards H 2 . The sensing mechanism is depicted on Figure 13 [135]. The parameters of all mentioned hydrogen gas sensors based on graphene, graphene derivatives, and various metal oxides are summarized and listed in Table 3.…”

Section: Graphene-metal Oxide Nanocompositementioning

confidence: 99%

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Graphene-Based Hydrogen Gas Sensors: A Review

Ilnicka

Łukaszewicz

2020

Processes

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Graphene is a material gaining attention as a candidate for new application fields such as chemical sensing. In this review, we discuss recent advancements in the field of hydrogen gas sensors based on graphene. Accordingly, the main part of the paper focuses on hydrogen gas sensors and examines the influence of different manufacturing scenarios on the applicability of graphene and its derivatives as key components of sensing layers. An overview of pristine graphene customization methods is presented such as heteroatom doping, insertion of metal/metal oxide nanosized domains, as well as creation of graphene-polymer blends. Volumetric structuring of graphene sheets (single layered and stacked forms) is also considered as an important modifier of its effective use. Finally, a discussion of the possible advantages and weaknesses of graphene as sensing material for hydrogen detection is provided.

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Section: Graphene-metal Oxide Nanocompositementioning

confidence: 99%

Section: Graphene-metal Oxide Nanocompositementioning

confidence: 99%

Graphene-Based Hydrogen Gas Sensors: A Review

Ilnicka

Łukaszewicz

2020

Processes

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“…189 Recently, Achary et al proposed ZnFe 2 O 4 -Pd decorated rGO as an H 2 sensing material. 190 The asfabricated sensor showed a high response of 11.43% towards 200 ppm H 2 at room temperature. Fig.…”

Section: H 2 Sensorsmentioning

confidence: 93%

Recent trends in gas sensingviacarbon nanomaterials: outlook and challenges

et al. 2021

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“…The gas-sensing measurement was performed by decorating the prepared sensor materials via microdrop-coating technique on a silica glass substrate, as displayed in Scheme 2. 53 At first, to eliminate surface-adsorbed impurities, all of the glasses (1.5 × 1.5 cm 2 ) were sonicated in ethanol and washed with DI water, followed by drying in a nitrogen atmosphere. Correspondingly, with the help of conducting copper tapes of the required dimensions, electrical contact was achieved by attaching it to the two sides of a glass substrate to achieve an active sensor surface.…”

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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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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Efficient room temperature detection of H2 gas by novel ZnFe2O4–Pd decorated rGO nanocomposite

Cited by 41 publications

References 48 publications

Graphene-Based Hydrogen Gas Sensors: A Review

Graphene-Based Hydrogen Gas Sensors: A Review

Recent trends in gas sensingviacarbon nanomaterials: outlook and challenges

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

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Efficient room temperature detection of H2 gas by novel ZnFe2O4–Pd decorated rGO nanocomposite

Cited by 41 publications

References 48 publications

Graphene-Based Hydrogen Gas Sensors: A Review

Graphene-Based Hydrogen Gas Sensors: A Review

Recent trends in gas sensingviacarbon nanomaterials: outlook and challenges

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

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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