Sulfuryl fluoride (SO2F2) is one of the ideal decomposition components of sulfur hexafluoride (SF6), which has been widely used as insulating and arc-quenching medium in gas-insulated switchgear (GIS) power equipment. To detect SF6 decomposition component at room temperature, use of SO2F2 still poses challenges. In this work, we have successfully prepared TiO2 nanofibers and Nickle sulfate (NiSO4 NPs) via facile electrospun and hydrothermal methods, followed by calcination process to improve sensing performance. The Ni-decoration on the outer surface of nanofibers could maximize the sensor response of 100 ppm SO2F2 up to 189% at room temperature, which shows that composite-based sensor is 2.5 times superior than pure sensors. Thus, the approach adopted for this novel composite based material is promising for the fabrication of superior gas sensor for SF6 decomposition.
Last. Jianguo Lu(ZJU: Zhejiang University)H-Index: 42
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The introduction of heterostructure is a new approach in gas sensing due to its easy and quick transport of charges. Herein, facile hydrothermal and solid-state techniques are employed to synthesize α-Fe2O3/Nb2O5 heterostructure. The morphology, microstructure, crystallinity, and surface composition of the synthesized heterostructure are investigated by SEM, TEM, XRD, XPS, and BET analyses. The mutual incorporation of α-Fe2O3 nanorods with Nb2O5 interconnected nanoparticles (INP) for the success...
#2Cecilia A. Zito(UNESP: Sao Paulo State University)H-Index: 8
Last. Diogo P. Volanti(UNESP: Sao Paulo State University)H-Index: 21
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Abstract Developing a device or material to detect volatile organic compounds (VOC) is no longer a challenge, despite its great interest. The difficulty is linked to developing a material that does not suffer from interferences, such as humidity, other gases, or volatiles present in the analyzes. In this sense, we present a new way to modify zinc oxide (ZnO) hollow spheres with nickel (II) sulfide (NiS) nanosheets, a barely studied material in the literature, to increase the butanone selectivity...
Abstract Development of transition metal-based catalysts to replace precious metal catalysts has significant meaning for overall water splitting. Here, we prepared cobalt-doped NiS@MoS2 core-shell nanorods (Co-NiS@MoS2) as bifunctional catalyst through a simple one-step hydrothermal method. Co-NiS@MoS2 catalyst could achieve brilliant electrocatalytic performance for hydrogen evolution reaction (HER), oxygen evolution reaction (OER) and overall water splitting. And Co-NiS@MoS2 catalyst manifeste...
#2Yue Niu(SCNU: South China Normal University)H-Index: 9
Last. Yao Wang(SCNU: South China Normal University)H-Index: 7
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For gas sensing applications, most of the reported two-dimensional (2D) materials are suffering from relative low sensitivity and high limit of detection (LOD) at room temperature. In this work, we...
Last. Mingzhe Rong(Xi'an Jiaotong University)H-Index: 26
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Tellurene has a phosphorene-like puckered configuration and exhibits great air stability. This characteristic makes it highly sensitive to some gases, and therefore, it has a huge potential in gas sensing applications. In this paper, the sensing performance of tellurene-based gas sensors toward SF6 decomposition products, including H2S, SO2, SO2F2, and SOF2, was systematically investigated. Three types of tellurene-based gas sensors were fabricated: single tellurene flake with ohmic contact (RCT...
Last. Liping Zhu(ZJU: Zhejiang University)H-Index: 72
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In this work, we report the spontaneous formation of NiO nanoparticles-decorated on smooth SnO2 nanofibers, which is an inexpensive and scalable method to yield high composite surface area via two steps facile synthesis process based on electrospinning and hydrothermal method. The layers of nanofibers, which containing the conducting electrolyte of proton, Nickel Oxide are deposited homogeneously over a large surface area from transparent solution of the electrolyte mixed and decorated on Tin di...
Last. Dongxu Yang(University of Electronic Science and Technology of China)H-Index: 18
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Because of the sluggish oxygen evolution kinetics, it is extremely important but still challenging to develop low-cost, efficient, and stable electrocatalysts for oxygen evolution reaction (OER) to enhance the efficiency of water electrolysis. Herein, for the first time, we present a novel heterostructure catalyst, constructed by ultrafine NiS/Fe3O4 heterostructural nanoparticles decorated on a carbon nanotube (CNT) matrix (NiS/Fe3O4 HNPs@CNT), which is synthesized by a facile hydrothermal react...
Last. Liping Zhu(ZJU: Zhejiang University)H-Index: 72
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A novel composite based on α-Bi2Mo3O12/Co3O4 nanotube-decorated particles was successfully synthesized using a highly efficient and facile two step system using electrospinning and hydrothermal techniques. The small size Co3O4 nanoparticles were uniformly and hydrothermally developed on the electrospun α-Bi2Mo3O12 nanotubes. The pure α-Bi2Mo3O12 nanofibers and composite based on α-Bi2Mo3O12/Co3O4 were examined using X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy-dispe...
Abstract Heterostructured semiconductor materials, combining the collective advantages of individuals and synergistic properties, have spurred great interest as a new paradigm toward detecting of volatile organic compounds recently. Direct use of NiS as a sensing material is impractical because the structure of NiS is unstable, exhibiting an undesirable sensing performance. Herein, we firstly report its incorporation into an ethanol gas sensor with a conventional n-type sensitive material of In2...
#1Hao Cui(Georgia Institute of Technology)H-Index: 21
#2Xiaoxing Zhang(HBUT: Hubei University of Technology)H-Index: 36
Last. Ying Zhang(Georgia Institute of Technology)H-Index: 22
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In recent years, many novel sensing nanomaterials were explored experimentally and theoretically as chemical gas sensors to detect sulphur hexafluoride (SF6) decomposed species with rapid response, high sensitivity and selectivity, as well as low cost, in order to estimate and guarantee the operation status of SF6 insulation devices. However, there has been no systemic review yet to comprehensively understand their sensing mechanism and conclude their sensing application. Such kinds of nanomater...
