Aerogel sheet of carbon nanotubes decorated with palladium nanoparticles for hydrogen gas sensing

Kim, Ju Hyeon; Jeon, Jei Gyeong; Ovalle‐Robles, Raquel; Kang, Tae June

doi:10.1016/j.ijhydene.2018.01.090

Cited by 26 publications

(22 citation statements)

References 37 publications

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“…In these systems, Pd NPs can be found deposited directly on silicon or silica substrates [1,6,7,8,33]; they can also be deposited on other oxide materials (ZnO, WO 3 , etc.) [49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65]; in some works they functionalize carbon materials (graphene, CNTs, etc) [9,39,46,66,67,68,69,70,71] or are even alloyed to other metals [55]. These various types of sensors are investigated here.…”

Section: Review Of Palladium-based Hydrogen Sensorsmentioning

confidence: 99%

“…these recent years. Several teams have worked on the implementation of such devices [9,39,46,66,67,68,69,70,71]. Typically, in this configuration, Pd NPs decorate graphene sheets or carbon nano-tubes or even nanowires and the resulting structure is implemented on top of SiO 2 /Si or glass substrates as shown in Figure 9a [39] and Figure 9b [39,46,67,70,71].…”

Section: Review Of Palladium-based Hydrogen Sensorsmentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances in Palladium Nanoparticles-Based Hydrogen Sensors for Leak Detection

Ndaya

Javahiraly

Brioude

2019

Sensors

121

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Along with the development of hydrogen as a sustainable energy carrier, it is imperative to develop very rapid and sensitive hydrogen leaks sensors due to the highly explosive and flammable character of this gas. For this purpose, palladium-based materials are being widely investigated by research teams because of the high affinity between this metal and hydrogen. Furthermore, nanostructured palladium may provide improved sensing performances compared to the use of bulk palladium. This arises from a higher effective surface available for interaction of palladium with the hydrogen gas molecules. Several works taking advantage of palladium nanostructures properties for hydrogen sensing applications have been published. This paper reviews the recent advances reported in the literature in this scope. The electrical and optical detection techniques, most common ones, are investigated and less common techniques such as gasochromic and surface wave acoustic sensors are also addressed. Here, the sensor performances are mostly evaluated by considering their response time and limit of detection.

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Section: Review Of Palladium-based Hydrogen Sensorsmentioning

confidence: 99%

Section: Review Of Palladium-based Hydrogen Sensorsmentioning

confidence: 99%

Recent Advances in Palladium Nanoparticles-Based Hydrogen Sensors for Leak Detection

Ndaya

Javahiraly

Brioude

2019

Sensors

121

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“…In the development of high-performance hydrogen sensors, sensors based on Pd and CNT (carbon nanotube) composite materials have attracted significant attention because of their advantages of hydrogen selectivity, high sensitivity [ 22 ], real-time detection, and low power consumption. CNTs coated with Pd nanoparticles [ 23 , 24 ] are suitable for their ease of fabrication and mass production; consequently, hydrogen sensors are in high demand.…”

Section: Introductionmentioning

confidence: 99%

Response of Palladium and Carbon Nanotube Composite Films to Hydrogen Gas and Behavior of Conductive Carriers

et al. 2020

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To develop a high-performance hydrogen gas sensor, we fabricated a composite film made of carbon nanotubes (CNTs) and palladium nanoparticles. Carbon nanotubes were spin-coated onto a glass substrate, and subsequently, palladium nanoparticles were sputtered onto this film. The response to hydrogen gas was measured during two seasons (summer and winter) using a vacuum chamber by introducing a hydrogen/argon gas mixture. There was a clear difference in the sensor response despite the temperature difference between summer and winter. In addition, since a clean chamber was used, fewer water molecules acted as a dopant, and the behavior of the CNT changed from p-type to n-type because of the dissociative adsorption of hydrogen. This phenomenon was confirmed as the Seebeck effect. Finally, the work functions of Pd, PdHx, and CNT were calculated by first-principle calculations. As predicted by previous studies, a decrease in work function due to hydrogen adsorption was confirmed; however, the electron transfer to CNT was not appropriate from the perspective of charge neutrality and was found to be localized at the Pd/CNT interface. It seems that the Seebeck effect causes the concentration of conductive carriers to change.

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“…[149] Besides the above semiconductor-based aerogels, there are some other aerogels can be used for gas sensors, such as carbon aerogels, organic aerogels, and their composite aerogels. [62,63,179,181,182,184,[190][191][192][193][194][195]197,[199][200][201][202][210][211][212][213][214] Carbon quantum dots, the carbon nanomaterials with size less than 10 nm, often have photoluminescence and unique optical properties. [192] When employing them to prepare hybrid aerogels, the excellent fluorescence activity can be well-retained, which can be selectively quenched by gases, [179] demonstrating a potential application in gas sensing.…”

Section: Gas Sensorsmentioning

confidence: 99%

“…Besides the above semiconductor‐based aerogels, there are some other aerogels can be used for gas sensors, such as carbon aerogels, organic aerogels, and their composite aerogels . Carbon quantum dots, the carbon nanomaterials with size less than 10 nm, often have photoluminescence and unique optical properties .…”

Section: Aerogel‐based Sensorsmentioning

confidence: 99%

Versatile Aerogels for Sensors

Yang

Zheng

et al. 2019

Small

119

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Aerogels are unique solid‐state materials composed of interconnected 3D solid networks and a large number of air‐filled pores. They extend the structural characteristics as well as physicochemical properties of nanoscale building blocks to macroscale, and integrate typical characteristics of aerogels, such as high porosity, large surface area, and low density, with specific properties of the various constituents. These features endow aerogels with high sensitivity, high selectivity, and fast response and recovery for sensing materials in sensors such as gas sensors, biosensors and strain and pressure sensors, among others. Considerable research efforts in recent years have been devoted to the development of aerogel‐based sensors and encouraging accomplishments have been achieved. Herein, groundbreaking advances in the preparation, classification, and physicochemical properties of aerogels and their sensing applications are presented. Moreover, the current challenges and some perspectives for the development of high‐performance aerogel‐based sensors are summarized.

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Aerogel sheet of carbon nanotubes decorated with palladium nanoparticles for hydrogen gas sensing

Cited by 26 publications

References 37 publications

Recent Advances in Palladium Nanoparticles-Based Hydrogen Sensors for Leak Detection

Recent Advances in Palladium Nanoparticles-Based Hydrogen Sensors for Leak Detection

Response of Palladium and Carbon Nanotube Composite Films to Hydrogen Gas and Behavior of Conductive Carriers

Versatile Aerogels for Sensors

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