Chemically deposited palladium nanoparticles on graphene for hydrogen sensor applications

Tang, Xiaohui; Haddad, Pierre-Antoine; Mager, Nathalie; Geng, Xin; Reckinger, Nicolas; Hermans, Sophie; Debliquy, Marc; Raskin, Jean‐Pierre

doi:10.1038/s41598-019-40257-7

Cited by 73 publications

(50 citation statements)

References 73 publications

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“…In another attempt to produce Pd@graphene nanocomposites, Tang et al [145] impregnated the graphene support into Pd(bipyridine)(pyrene) 2 for 10 min to connect the Pd precursor molecules with the graphene support through π-π bonds. After washing, the sample was annealed at 300 °C for 40 min under H 2 /Ar flow.…”

Section: Palladium-based Nanocompositesmentioning

confidence: 99%

Synthesis of cobalt, palladium, and rhenium nanoparticles

2020

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Over the past decade, metal nanoparticles (MNPs) have attracted extensive attention due to their unique physiochemical properties that make them highly applicable in various fields such as chemical sensing, energy storage, catalysis, medicine, and environmental engineering. Their physiochemical properties depend drastically on the MNP size and morphology, which are largely determined by their synthesis methods. Research on MNPs predominantly focused on coinage metals (Au, Ag and Cu), but in the last decade research on metals with a relatively high melting temperature such as Pd, Co, and Re has seen rapid increases, mainly driven by their potential applications as catalysts. This paper presents the recent advances on different synthesis techniques of Co, Pd, and Re nanoparticles, their resulting nanostructures, as well as existing and potential applications.

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Section: Palladium-based Nanocompositesmentioning

confidence: 99%

Synthesis of cobalt, palladium, and rhenium nanoparticles

2020

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“…A general overview or in particular few important hydrogen sensing highlights as proposed by research groups are compiled to explain the sensing mechanism of graphene based hydrogen sensors [13,61]. Basically four factors critically influence the sensing mechanism: (a) relevance of material, (b) development of junction, (c) surface adsorbed species and (d) external perturbation during sensing.…”

Section: Suggested Mechanism Of Hydrogen Sensingmentioning

confidence: 99%

“…Tang and group in a sensing study with palladium and graphene discussed the formation of two phases, "α" and "β" in hydrogen adsorbed palladium [61] (Figure 5). At room temperature, pressure as low as 0.01 bar leads to the saturation of "α" phase.…”

Section: External Perturbation During Sensingmentioning

confidence: 99%

“…During recovery, the low dissociation energy (2.96 eV) of PdH x in comparison to incident photon energy helps in easy release of the adsorbed hydrogen, and the Pd work function slowly reverts back to its initial value. So the response parameters improved due to external perturbation [61]. Novoselov et al also showed that it is possible to regenerate the sensor to its original state by annealing at 150°C in vacuum or by short UV radiation exposure [7].…”

Section: External Perturbation During Sensingmentioning

confidence: 99%

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Nano Layers of 2D Graphene Versus Graphene Oxides for Sensing Hydrogen Gas

Kashyap¹,

Sinha²,

Barman³

et al. 2020

Multilayer Thin Films - Versatile Applications for Materials Engineering

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Hydrogen is one of the most useful but dangerous gases because of its broad combustion range and small ignition temperature. Currently, there is a great need for hydrogen detectors with selectivity, high sensitivity and reliable operations in view of its safe production, storage, transportation and other applications. In this regard, nano thin films of two dimensional materials like graphene, graphene oxide (GO) and reduced graphene oxide (rGO) have immense promise because their material attributes can be exceptionally tuned to achieve the desired characteristics. Also graphene oxide and reduced graphene oxide serve as potential sensing hosts due to the presence of functional groups on their surfaces. In this chapter, an attempt has been made to compare the work done in the field of hydrogen sensors using pure graphene and graphene derivatives such as graphene oxide and reduced graphene oxide. The response parameters like sensitivity, stability, selectivity, response time, recovery time, detection limit, linearity, dynamic range, and working temperatures for various graphene based sensors have been elaborately compared. Finally, a conclusion and future outlook on nano scale thin film of graphene and graphene oxides for gas sensing have been briefly discussed.

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“…Materials modifications [15][16][17][18][19], sensors design [20][21][22][23][24], and testing schemes [25][26][27][28][29], were used to improve the performance of gas sensor devices; but only a few [30][31][32] reports on its dependence with the chamber design. This factor is important to efficiently investigate the characteristics of the sensor being tested.…”

Section: Introductionmentioning

confidence: 99%

Influence of chamber design on the gas sensing performance of graphene field-effect-transistor

et al. 2020

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We report on the influence of chamber design on the gas sensing performance of a graphene field-effect-transistor (GFET). A conventional chamber (V = 400 ml) and a cap chamber (V = 1 ml), were used to perform dynamic measurements on a GFET. To gain a-priori knowledge on the gas flow in the chambers, Naiver-Stokes and convection-diffusion equations were numerically-solved using COMSOL Multiphysics. We numerically and experimentally observed two main factors that can affect the GFET performance: (1) the gas flow direction through the chamber and (2) the chamber volume. At 5-min exposure time, at least 200% higher GFET sensitivity was calculated from the cap chamber, which is expected since the conventional chamber is 400 times larger. Interestingly, even when the conventional chamber is fully saturated (at 90-min exposure time), the GFET sensitivity in the cap chamber is still better by 28.57%. We attributed this behavior to the swirling vapor flow in the cap chamber brought about by the U-shaped path. This effect causes multiple interaction of H 2 O molecules with the GFET, resulting to higher computed sensitivity. However, at higher relative humidity, the GFET becomes populated, reducing the number of H 2 O molecules that can re-interact with the sensor. In terms of GFET transient characteristics, a 154% and 86.9% faster response and recovery, respectively, were observed in the cap-design. This was due to its smaller volume that minimized poorly purged region in the chamber. But if the chambers have the same volumes, we may infer a faster GFET response and recovery from the conventional chamber where the gas flow is unperturbed. These results could contribute in designing a time efficient and cost-effective gas sensing system.

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Chemically deposited palladium nanoparticles on graphene for hydrogen sensor applications

Cited by 73 publications

References 73 publications

Synthesis of cobalt, palladium, and rhenium nanoparticles

Synthesis of cobalt, palladium, and rhenium nanoparticles

Nano Layers of 2D Graphene Versus Graphene Oxides for Sensing Hydrogen Gas

Influence of chamber design on the gas sensing performance of graphene field-effect-transistor

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