High performance hydrogen gas sensors based on PdO-decorated p-type CoV2O6 nanoparticles

Moschogiannaki, Marilena; Zouridi, Leila; Sukunta, J.; Phanichphant, Sukon; Gagaoudakis, E.; Liewhiran, C.; Kiriakidis, G.; Binas, Vassiliοs

doi:10.1016/j.snb.2020.128744

Cited by 28 publications

(10 citation statements)

References 50 publications

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“…The Bragg's spots in the SAED pattern indexed with (0–12), (0–14), and (015) planes of CoV 2 O 6 (JCPDS no. 51–0130), which is corresponding to the lattice line spacing of 3.25, 1.99 and 1.62 Å respectively, exhibiting clear evidence of a highly crystalline nature, with a lattice line spacing of 0.29 nm that corresponds to (310) lattice plan of pristine CoV 2 O 6 (CV‐2) and it is well matched with literature [50,51] …”

Section: Resultssupporting

confidence: 85%

“…The XRD results were well‐matched with JCPDS no. 51–0130, which revealed that all the CV materials were crystalline with the triclinic crystal structure of space group P‐1 [51,52] . There were no impurity diffraction peaks witnessed in the XRD pattern, indicating the formation of high‐purity triclinic CoV 2 O 6 .…”

Section: Resultsmentioning

confidence: 91%

“…51-0130, which revealed that all the CV materials were crystalline with the triclinic crystal structure of space group P-1. [51,52] There were no impurity diffraction peaks witnessed in the XRD pattern, indicating the formation of high-purity triclinic CoV 2 O 6 . Additionally, the sharp peaks suggest that the materials were highly crystalline, and no changes were observed in the crystal structure with varying molar concentrations.…”

Section: Introductionmentioning

confidence: 97%

“…51-0130), which is corresponding to the lattice line spacing of 3.25, 1.99 and 1.62 Å respectively, exhibiting clear evidence of a highly crystalline nature, with a lattice line spacing of 0.29 nm that corresponds to (310) lattice plan of pristine CoV 2 O 6 (CV-2) and it is well matched with literature. [50,51] The morphological evolution and structure of the CV were traced through the HR FE-SEM characterization technique. Figure 3(a-c) shows the HR FE-SEM images of CV-1, CV-2, and CV-3.…”

Section: Introductionmentioning

confidence: 99%

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Morphological Perspective on Energy Storage Behavior of Cobalt Vanadium Oxide

Nanthagopal

Santhoshkumar

et al. 2022

ChemElectroChem

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Currently available graphitic‐based anodes for lithium‐ion storage do not meet the present‐day energy requirements. Concerning the upcoming energy demands, it is necessary to discover high‐performance anode materials that are suitable for lithium‐ion energy storage systems. Herein, a CoV2O6 (cobalt vanadium oxide, cobalt vanadate denoted as CV) anode material using a simple solvothermal technique is synthesized. Furthermore, the effects of modifying the molar concentration of the precursor materials are investigated. Interestingly, there is no change in the crystal structure, but there is a morphological evolution in the materials. Due to the morphological variations, the electrochemical performances vary significantly. Among the synthesized materials, the CV‐2 compound performs the best, exhibiting excellent performance for lithium‐ion batteries as an anode. At the end of 500 cycles, the material delivers a specific discharge capacity of 391.03 mAh g−1 with a current density of 500 mA g−1.

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Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Morphological Perspective on Energy Storage Behavior of Cobalt Vanadium Oxide

Nanthagopal

Santhoshkumar

et al. 2022

ChemElectroChem

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“…Several strategies have been proposed and implemented to reduce the humidity interference in the sensing response [29][30][31][32]. Among others, one of the efficient strategies is the use of noble metal catalysts such as Pd, Pt, and their compounds [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Three-Layer PdO/CuWO4/CuO System for Hydrogen Gas Sensing with Reduced Humidity Interference

2021

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The growing hydrogen industry is stimulating an ongoing search for new materials not only for hydrogen production or storage but also for hydrogen sensing. These materials have to be sensitive to hydrogen, but additionally, their synthesis should be compatible with the microcircuit industry to enable seamless integration into various devices. In addition, the interference of air humidity remains an issue for hydrogen sensing materials. We approach these challenges using conventional reactive sputter deposition. Using three consequential processes, we synthesized multilayer structures. A basic two-layer system composed of a base layer of cupric oxide (CuO) overlayered with a nanostructured copper tungstate (CuWO4) exhibits higher sensitivity than individual materials. This is explained by the formation of microscopic heterojunctions. The addition of a third layer of palladium oxide (PdO) in forms of thin film and particles resulted in a reduction in humidity interference. As a result, a sensing three-layer system working at 150 °C with an equalized response in dry/humid air was developed.

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Selective Detection of H₂ Gas in Gas Mixtures Using NiO‐Shelled Pd‐Decorated ZnO Nanowires

Badie,

Mirzaei,

Lee

et al. 2024

Adv Materials Technologies

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Hydrogen (H2) gas is a green fuel, but its leakage during storage and transportation can lead to disasters due to its explosive nature. Here, a sensitive and selective H2 gas sensor is developed that can detect H2 in H2/CO and H2/NO2 gas mixtures. First, ZnO nanowires (NWs) are grown using vapor–liquid–solid growth. This is followed by atomic layer deposition‐mediated growth of Pd nanoparticles (NPs) on the ZnO NWs and uniform deposition of a thin NiO shell layer (12 nm in thickness) over the Pd‐decorated ZnO NWs. Characterization of the synthesized samples by different methods confirms the desired chemical composition, morphology, and phases. H2 gas sensing studies reveals the highly sensitive and selective response of the optimized gas sensor to H2 at 200 °C. In the presence of H2/CO and H2/NO2 gas mixtures, the NiO‐shelled Pd‐decorated ZnO NW sensor displays good selectivity for H2, but not the Pd‐decorated ZnO NW gas one. The NiO‐shelled Pd‐decorated ZnO NW gas sensor efficiently detected H2 also in the presence of 40% relative humidity and displays good stability even after 1 month. The present results can open the doors to the fabrication of highly selective H2 gas sensors using the described rationale design.

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High performance hydrogen gas sensors based on PdO-decorated p-type CoV2O6 nanoparticles

Cited by 28 publications

References 50 publications

Morphological Perspective on Energy Storage Behavior of Cobalt Vanadium Oxide

Morphological Perspective on Energy Storage Behavior of Cobalt Vanadium Oxide

Three-Layer PdO/CuWO4/CuO System for Hydrogen Gas Sensing with Reduced Humidity Interference

Selective Detection of H₂ Gas in Gas Mixtures Using NiO‐Shelled Pd‐Decorated ZnO Nanowires

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High performance hydrogen gas sensors based on PdO-decorated p-type CoV2O6 nanoparticles

Cited by 28 publications

References 50 publications

Morphological Perspective on Energy Storage Behavior of Cobalt Vanadium Oxide

Morphological Perspective on Energy Storage Behavior of Cobalt Vanadium Oxide

Three-Layer PdO/CuWO4/CuO System for Hydrogen Gas Sensing with Reduced Humidity Interference

Selective Detection of H2 Gas in Gas Mixtures Using NiO‐Shelled Pd‐Decorated ZnO Nanowires

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Selective Detection of H₂ Gas in Gas Mixtures Using NiO‐Shelled Pd‐Decorated ZnO Nanowires