Room-temperature hydrogen sensing performance of Nb<sub>2</sub>O<sub>5</sub>nanorod arrays

Zou, Yunling; He, Jiarong; Hu, Yongming; Huang, Rui; Zhao, Wenzhu; Gu, Qiang

doi:10.1039/c8ra02329h

Cited by 23 publications

(12 citation statements)

References 25 publications

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“…Recently, the study of hydrothermal synthesis through thermodynamic calculation provides an incentive for material preparation development. A series of MOx nanomaterials with different morphologies, such as nanorods, 146 nanoribbons, 132,147 nanoflowers, 136 nanoporous structures, 114 are obtained by the hydrothermal or solvothermal methods.…”

Section: Materials Advances Accepted Manuscriptmentioning

confidence: 99%

“…SnO 2 , 135 MoO 3 , 147 Nb 2 O 5 146 and other MOx nanomaterials with good morphology were prepared by the "one-pot method". The MOx nanomaterials synthesized by the "onepot method" is simple, low-cost and eco-friendly.…”

Section: Materials Advances Accepted Manuscriptmentioning

confidence: 99%

“…It has been reported that MoO 3 nanobelts synthesized by Yang et al 132 and Nb 2 O 5 nanoarrays synthesized by Zou et al 146 can also achieve efficient detection of H 2 gas at room temperature.…”

Section: N-type Semiconductor Metal Oxide Nanomaterialsmentioning

confidence: 99%

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Advanced development of metal oxide nanomaterials for H₂gas sensing applications

Shi

Liu

et al. 2021

Mater. Adv.

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Section: Materials Advances Accepted Manuscriptmentioning

confidence: 99%

Section: Materials Advances Accepted Manuscriptmentioning

confidence: 99%

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Advanced development of metal oxide nanomaterials for H₂gas sensing applications

Shi

Liu

et al. 2021

Mater. Adv.

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“…As such, hydrogen gas sensor has been a critical asset in monitoring and controlling its concentration and leakage in various components and devices for H 2 processing, storage, and transportation. A resistance-metric hydrogen sensor was fabricated using a facile hydrothermal catalyst-free method (Zou et al, 2018). The Nb 2 O 5 nanorod arrays were grown using a hydrothermal method on a Nb foil (Figure 7D).…”

Section: Sensor Implementation Of Metal Oxide Nanoarrays Resistive Type Sensing Modementioning

confidence: 99%

Metal Oxide Nanoarrays for Chemical Sensing: A Review of Fabrication Methods, Sensing Modes, and Their Inter-correlations

Zhang

Gao

2019

Front. Mater.

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In recent years, engineered nanostructure assemblies such as nanowire arrays have attracted much research attention due to their unique chemical and functional characteristics collectively. The engineered nano-assemblies usually carry the characteristics distinct from bulk as a result of a size effect in their comprised elemental building blocks. The nanoscale size induced high surface-to-volume ratio is a fundamental attribute responsible for various chemical and physical properties required in various technologically important applications such as catalysts and sensors. This review article surveys the latest progress in engineered metal oxide nanostructure arrays, i.e., nanoarrays, for advanced chemical sensors' design and application. It starts with an overview of gaseous chemical sensors followed by surveys of various fabrication methods and routes for metal oxide nanoarrays. Different sensing modes and corresponding applications have been highlighted in the mixed gaseous chemical sensing, which provides new approaches and perspectives to meet the challenges of selective gas sensing, such as the cross-sensitivity and inter-correlation of multiple sensing signals.

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“…However, numerous other semiconductor oxides can also be used for this technology [8,10,12]. Niobium pentoxide (Nb 2 O 5 ) is a semiconductor that has interesting optical and electrical properties and can be applied in different research fields, such as DSSC, photocatalysis, and sensors [3,[13][14][15][16][17][18][19][20]. Nb 2 O 5 is an n-type semiconductor with a larger conduction band edge and a wide bandgap [4,8,12].…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

Multi-Photonic behavior of Nb2O5 and its correlation with synthetic methods

et al. 2021

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The performance of niobium pentoxide (Nb 2 O 5 ) as photoanodes in dye-sensitized solar cells (DSSCs) and as catalysts in the photocatalytic degradation of Rhodamine B (RhB) was investigated. Four samples of Nb 2 O 5 (Nb 2 O 5 _SG, Nb 2 O 5 _CR, Nb 2 O 5 _PP, and Nb 2 O 5 _MA) were synthesized by four different methods, respectively, entailing the sol-gel, combustion, polymeric precursors, and a microwave-assisted hydrothermal reaction. In all these samples, the orthorhombic phase of Nb 2 O 5 was obtained, which resulted in different shapes and assemblies, which is very relevant because the surface area, shape, and size distribution of the nanoparticles significantly contribute to the optical process. The bandgap remained constant at 3.0 eV for all the samples, even for the sample prepared by the combustion method. An additional phase, which is related to local distortions, was revealed by Raman spectroscopy within the vibration range of 688-260 cm -1 . DSSCs using photoanodes with smaller and more dispersed Nb 2 O 5 particles showed better results than those with inhomogeneities. For comparison, DSSCs were assembled using two different counter electrodes, platinum and graphite. The DSSC with platinum showed better photovoltaic results, mainly with photocurrents from 1.17 mA.cm -2 for Nb 2 O 5 _CR to 1.64 mA.cm -2 for Nb 2 O 5 _SG. The same trend was observed for the photocatalytic degradation of RhB, where the smaller and dispersed particles of Nb 2 O 5 _CR and Nb 2 O 5 _SG exhibited the best performance and, respectively, degraded approximately 75% and 61% of the RhB dye over 180 min. Therefore, the results of this study established a correlation between the synthesis methods and photonic behavior.

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Room-temperature hydrogen sensing performance of Nb₂O₅nanorod arrays

Abstract: A hydrogen sensor based on Nb2O5 nanorod arrays was synthesized and exhibited a fast and highly-sensitive response at room temperature.

Cited by 23 publications

References 25 publications

Advanced development of metal oxide nanomaterials for H₂gas sensing applications

Advanced development of metal oxide nanomaterials for H₂gas sensing applications

Metal Oxide Nanoarrays for Chemical Sensing: A Review of Fabrication Methods, Sensing Modes, and Their Inter-correlations

Multi-Photonic behavior of Nb2O5 and its correlation with synthetic methods

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Room-temperature hydrogen sensing performance of Nb2O5nanorod arrays

Abstract: A hydrogen sensor based on Nb2O5 nanorod arrays was synthesized and exhibited a fast and highly-sensitive response at room temperature.

Cited by 23 publications

References 25 publications

Advanced development of metal oxide nanomaterials for H2gas sensing applications

Advanced development of metal oxide nanomaterials for H2gas sensing applications

Metal Oxide Nanoarrays for Chemical Sensing: A Review of Fabrication Methods, Sensing Modes, and Their Inter-correlations

Multi-Photonic behavior of Nb2O5 and its correlation with synthetic methods

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Room-temperature hydrogen sensing performance of Nb₂O₅nanorod arrays

Advanced development of metal oxide nanomaterials for H₂gas sensing applications

Advanced development of metal oxide nanomaterials for H₂gas sensing applications