Quasi-one-dimensional metal-oxide-based heterostructural gas-sensing materials: A review

Li, Tianming; Zeng, Wen; Wang, Zhongchang

doi:10.1016/j.snb.2015.08.003

Cited by 213 publications

(81 citation statements)

References 146 publications

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“…First, the inexhaustible abundance of hybrid materials (in both the complex constituents and novel nanostructures) makes it possible to involve an almost infinite continuum of variable factors (surface-dependent factor, interfacedependent factor, and structure-dependent factor) to generate new sensing behaviors ( Fig. 1c) [38][39][40][41][42][43][44][45][46][47][48][49]. Second, with hybrid material, more chemical/physical processes with different enhanced mechanisms could be introduced to precisely design, regulate, and enhance the sensing performance mainly through catalytic reaction with analyte [50][51][52][53][54][55][56][57][58], charge transfer [59][60][61][62][63], charge carrier transport [64][65][66] manipulation/construction of heterojunctions [39, 1 3 67], molecular binding/sieving [68][69][70][71][72][73], and their combinations [74][75][76][77].…”

Section: The Need For Hybrid Functional Nanomaterials For Sensing Appmentioning

confidence: 99%

“…3d) [51,91]. For even further performance, quasi-1D nanostructures with both porosity and sensitive nanobuilding blocks, namely mesoporous 1D nanofibers/tubes (meso-NF/NTs), have been reported [41,[92][93][94]. By introducing sacrificial polymeric colloids and protein-templated catalysts to the solutions, meso-and macro-porous Pt-decorated SnO 2 NTs have been fabricated by electrospinning and sintering in sequence ( Fig.…”

Section: Hybrid Gas Sensors Based On Catalytic Effectsmentioning

confidence: 99%

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Gas Sensors Based on Chemi-Resistive Hybrid Functional Nanomaterials

et al. 2020

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HIGHLIGHTS• This review gives a thinking based on the generic mechanisms rather than simply dividing them as different types of combination of materials, which is unique and valuable for understanding and developing the novel hybrid materials in the future.• The hybrid materials, their sensing mechanism, and their applications are systematically reviewed. Critical thinking and ideas regarding the orientation of the development of hybrid material-based gas sensor in the future are also discussed.ABSTRACT Chemi-resistive sensors based on hybrid functional materials are promising candidates for gas sensing with high responsivity, good selectivity, fast response/recovery, great stability/repeatability, room-working temperature, low cost, and easy-to-fabricate, for versatile applications. This progress report reviews the advantages and advances of these sensing structures compared with the single constituent, according to five main sensing forms: manipulating/constructing heterojunctions, catalytic reaction, charge transfer, charge carrier transport, molecular binding/sieving, and their combinations. Promises and challenges of the advances of each form are presented and discussed.Critical thinking and ideas regarding the orientation of the development of hybrid material-based gas sensor in the future are discussed.

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Section: The Need For Hybrid Functional Nanomaterials For Sensing Appmentioning

confidence: 99%

Section: Hybrid Gas Sensors Based On Catalytic Effectsmentioning

confidence: 99%

Gas Sensors Based on Chemi-Resistive Hybrid Functional Nanomaterials

et al. 2020

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“…1D metal oxide nanostructures are the most widely studied nanostructures, as evidenced by the numerous excellent reviews on the synthesis and functional applications of 1D metal oxide nanomaterials that have been appearing almost every year recently [2,[76][77][78][79][80][81][82][83][84][85][86][87][88][89]. In this review, we only intend to give some general information on the fabrication of 1D metal oxide nanostructures.…”

Section: Synthetic Strategies For 1d Metal Oxide Nanostructuresmentioning

confidence: 99%

Strategies for designing metal oxide nanostructures

2016

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There has been exponential growth in research activities on nanomaterials and nanotechnology for applications in emerging technologies and sustainable energy in the past decade. The properties of nanomaterials have been found to vary in terms of their shapes, sizes, and number of nanoscale dimensions, which have also further boosted the performance of nanomaterial-based electronic, catalytic, and sustainable energy conversion and storage devices. This reveals the importance and, indeed, the linchpin role of nanomaterial synthesis for current nanotechnology and high-performance functional devices. In this review, we provide an overview of the synthesis strategies for designing metal oxide nanomaterials in zerodimensional (0D), one-dimensional (1D), two-dimensional (2D), and three-dimensional (3D) forms, particularly of the selected typical metal oxides TiO2, SnO2 and ZnO. The pros and cons of the typical synthetic methods and experimental protocols are reviewed and outlined. This comprehensive review gives a broad overview of the synthetic strategies for designing "property-on-demand" metal oxide nanostructures to further advance current nanoscience and nanotechnology.

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“…Sensing nanostructure with high surface area and full electron depletion is advantageous to enhance the sensing performances (Hao et al, 2012; Miller et al, 2014). In particular, the 1D nanostructures such as nanofibers (Jiang et al, 2016), nanorods (Zhang et al, 2014; Zou et al, 2016), and nanotubes (Kong et al, 2015) have been extensively applied to improve gas sensing properties (Li T. M. et al, 2015; Long et al, 2018). Besides, many studies indicated that the selectivity and other important sensing parameters of semiconductor metal oxide nanomaterials can be enhanced by compositing semiconductor metal oxides (Zhou et al, 2015; Tomer and Duhan, 2016; Wang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Electrospun ZnO–SnO2 Composite Nanofibers and Enhanced Sensing Properties to SF6 Decomposition Byproduct H2S

Zhou

Wang

et al. 2018

Front. Chem.

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Hydrogen sulfide (H2S) is an important decomposition component of sulfur hexafluoride (SF6), which has been extensively used in gas-insulated switchgear (GIS) power equipment as insulating and arc-quenching medium. In this work, electrospun ZnO-SnO2 composite nanofibers as a promising sensing material for SF6 decomposition component H2S were proposed and prepared. The crystal structure and morphology of the electrospun ZnO-SnO2 samples were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), respectively. The composition of the sensitive materials was analyzed by energy dispersive X-ray spectrometers (EDS) and X-ray photoelectron spectroscopy (XPS). Side heated sensors were fabricated with the electrospun ZnO-SnO2 nanofibers and the gas sensing behaviors to H2S gas were systematically investigated. The proposed ZnO–SnO2 composite nanofibers sensor showed lower optimal operating temperature, enhanced sensing response, quick response/recovery time and good long-term stability against H2S. The measured optimal operating temperature of the ZnO–SnO2 nanofibers sensor to 50 ppm H2S gas was about 250°C with a response of 66.23, which was 6 times larger than pure SnO2 nanofibers sensor. The detection limit of the fabricated ZnO–SnO2 nanofibers sensor toward H2S gas can be as low as 0.5 ppm. Finally, a plausible sensing mechanism for the proposed ZnO–SnO2 composite nanofibers sensor to H2S was also discussed.

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Quasi-one-dimensional metal-oxide-based heterostructural gas-sensing materials: A review

Cited by 213 publications

References 146 publications

Gas Sensors Based on Chemi-Resistive Hybrid Functional Nanomaterials

Gas Sensors Based on Chemi-Resistive Hybrid Functional Nanomaterials

Strategies for designing metal oxide nanostructures

Electrospun ZnO–SnO2 Composite Nanofibers and Enhanced Sensing Properties to SF6 Decomposition Byproduct H2S

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