Ru modulates the catalytic activity of Pt to modify WO3 nanowires for high-performance hydrogen sensing at near room temperature

Li, Jianjun; Mo, Xichao; Ali, Salamat; Liu, Zhe; Cheng, Pu; Li, Yiding; Sun, Kai; Fu, Yujun; Wang, Yanrong; Xie, Erqing

doi:10.1016/j.apsusc.2022.156286

Cited by 7 publications

(5 citation statements)

References 55 publications

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“…Efforts to lower MOS operating temperatures without sacrificing sensitivity have focused on increasing surface-to-volume ratios. MOS microcubes, thin films and nanostructures such as nanoparticles, , nanospheres, , nanorods, nanowires, nanotubes, nanofilms, and nanoflowers, − all exhibit improved sensitivity at lower temperature. In addition, functionalizing the MOS surface with metals like Pd, Pt, or Ni nanoparticles greatly improves H 2 sensitivity.…”

Section: Metal Oxide Semiconductor Sensorsmentioning

confidence: 99%

“…MOS microcubes, thin films and nanostructures such as nanoparticles, , nanospheres, , nanorods, nanowires, nanotubes, nanofilms, and nanoflowers, − all exhibit improved sensitivity at lower temperature. In addition, functionalizing the MOS surface with metals like Pd, Pt, or Ni nanoparticles greatly improves H 2 sensitivity. In this case, as with the carbon sensing architectures, the metal nanoparticles catalyze H 2 dissociation, then the protons ultimately diffuse toward the MOS surface to react with O 2 – …”

Section: Metal Oxide Semiconductor Sensorsmentioning

confidence: 99%

“…Li et al reported a similarly low detection limit by combining Pt to release electrons, and Ru to catalyze the removal or electrons from WO 3 . The sensor consisted of 100 nm diameter WO 3 nanowires decorated with bimetallic PtRu nanoparticles assembled between Au electrodes.…”

Section: Metal Oxide Semiconductor Sensorsmentioning

confidence: 99%

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Critical Sensing Modalities for Hydrogen: Technical Needs and Status of the Field to Support a Changing Energy Landscape

Swager,

Pioch,

Feng

et al. 2024

ACS Sens.

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Decarbonization of the energy system is a key aspect of the energy transition. Energy storage in the form of chemical bonds has long been viewed as an optimal scheme for energy conversion. With advances in systems engineering, hydrogen has the potential to become a low cost, low emission, energy carrier. However, hydrogen is difficult to contain, it exhibits a low flammability limit (>40000 ppm or 4%), low ignition energy (0.02 mJ), and it is a short-lived climate forcer. Beyond commercially available sensors to ensure safety through spot checks in enclosed environments, new sensors are necessary to support the development of low emission infrastructure for production, transmission, storage, and end use. Efficient scalable broad area hydrogen monitoring motivates lowering the detection limit below that (10 ppm) of best in class commercial technologies. In this perspective, we evaluate recent advances in hydrogen gas sensing to highlight technologies that may find broad utility in the hydrogen sector. It is clear in the near term that a sensor technology suite is required to meet the variable constraints (e.g., power, size/weight, connectivity, cost) that characterize the breadth of the application space, ranging from industrial complexes to remote pipelines. This perspective is not intended to be another standard hydrogen sensor review, but rather provide a critical evaluation of technologies with detection limits preferably below 1 ppm and low power requirements. Given projections for rapid market growth, promising techniques will also be amenable to rapid development in technical readiness for commercial deployment. As such, methods that do not meet these requirements will not be considered in depth.

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Section: Metal Oxide Semiconductor Sensorsmentioning

confidence: 99%

Section: Metal Oxide Semiconductor Sensorsmentioning

confidence: 99%

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Critical Sensing Modalities for Hydrogen: Technical Needs and Status of the Field to Support a Changing Energy Landscape

Swager,

Pioch,

Feng

et al. 2024

ACS Sens.

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“…Noble metal nanoparticles (NPs) like Ag, Au, Pt, and Pd find extensive application in the modification of MOS sensing materials due to their outstanding catalytic properties and unique characteristics. Typically, the work function of noble metals exceeds that 34 Lee et al synthesized a Pd-WO 3 chemiresistive sensor using charged droplets for the reinforced self-assembly of nanoparticles, which exhibited a high response of up to 1786.3 and a response time of 41 s at room temperature to 100 ppm of H 2 . 35 In this paper, Pd-modified WO 3 nanoplates were prepared using a hydrothermal method.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al prepared Ru/Pt comodified WO 3 nanowire hydrogen sensor by electrospinning method. By controlling the atomic percentages of Ru, Pt, and W, the sensor’s response value to 1 ppm of H 2 reached 1010 at near room temperature (70 °C) . Lee et al synthesized a Pd-WO 3 chemiresistive sensor using charged droplets for the reinforced self-assembly of nanoparticles, which exhibited a high response of up to 1786.3 and a response time of 41 s at room temperature to 100 ppm of H 2 …”

Section: Introductionmentioning

confidence: 99%

Pd-Doped WO₃ Nanoplates for Hydrogen Sensing: Experimental Studies and Density Functional Theory Investigations

Ma,

Chen,

Liu

et al. 2024

ACS Appl. Nano Mater.

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In this article, a hydrogen sensor with excellent performance was synthesized using the hydrothermal method, with Pd-modified WO 3 nanoplates as the sensing layer. At an optimum operating temperature of 200 °C, the hydrogen gas sensing capabilities of WO 3 and Pd-WO 3 composite sensors were investigated. The findings indicate that in contrast to the WO 3 sensor, the Pd-WO 3 composite sensor exhibits superior hydrogen sensing performance, showcasing remarkable selectivity, reliable repeatability, sustained long-term stability, and quick response and recovery (8 s/10 s@100 ppm). The first-principles density functional theory was used to explain the sensing mechanism of the Pd-WO 3 composite. The improved sensing performance of Pd-WO 3 composite sensors was explained from the perspectives of the Schottky junction formed between Pd nanoparticles and WO 3 , the catalytic effect of metal Pd nanoparticles, and gas adsorption−desorption. This article confirms that Pd-modified WO 3 nanoplates are good candidates for efficient hydrogen gas sensing.

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Synergistic mechanism of hetero-interfacial oxygen vacancies on catalytic oxidation of 1,2-dichloroethane over Ru-modified monolayer-dispersed WOx/CeO2 catalysts: Differences in distribution of active sites

Meng,

Wang,

Wang

et al. 2024

Applied Catalysis B: Environmental

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Ru modulates the catalytic activity of Pt to modify WO3 nanowires for high-performance hydrogen sensing at near room temperature

Cited by 7 publications

References 55 publications

Critical Sensing Modalities for Hydrogen: Technical Needs and Status of the Field to Support a Changing Energy Landscape

Critical Sensing Modalities for Hydrogen: Technical Needs and Status of the Field to Support a Changing Energy Landscape

Pd-Doped WO₃ Nanoplates for Hydrogen Sensing: Experimental Studies and Density Functional Theory Investigations

Synergistic mechanism of hetero-interfacial oxygen vacancies on catalytic oxidation of 1,2-dichloroethane over Ru-modified monolayer-dispersed WOx/CeO2 catalysts: Differences in distribution of active sites

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Ru modulates the catalytic activity of Pt to modify WO3 nanowires for high-performance hydrogen sensing at near room temperature

Cited by 7 publications

References 55 publications

Critical Sensing Modalities for Hydrogen: Technical Needs and Status of the Field to Support a Changing Energy Landscape

Critical Sensing Modalities for Hydrogen: Technical Needs and Status of the Field to Support a Changing Energy Landscape

Pd-Doped WO3 Nanoplates for Hydrogen Sensing: Experimental Studies and Density Functional Theory Investigations

Synergistic mechanism of hetero-interfacial oxygen vacancies on catalytic oxidation of 1,2-dichloroethane over Ru-modified monolayer-dispersed WOx/CeO2 catalysts: Differences in distribution of active sites

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Pd-Doped WO₃ Nanoplates for Hydrogen Sensing: Experimental Studies and Density Functional Theory Investigations