Fabrication and Enhanced Acetylene Sensing Properties of PdO-Decorated SnO&lt;SUB&gt;2&lt;/SUB&gt; Composites Chemical Sensor

Zhou, Qu; Liu, Hongcheng; Hong, Changxiang; Xu, Lingna; Chen, Weigen

doi:10.1166/sl.2016.3734

Cited by 8 publications

(3 citation statements)

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“…Gas sensors were fabricated by a screen-printing technique with planar ceramic substrates [ 29 ] Figure 1 (the planar sensor) shows a structural drawing of the sensor, which mainly consists of three parts: ceramic substrate, Ag–Pd interdigital electrodes, and sensing materials. As prepared samples were ground into a fine powder and further mixed with distilled water and ethanol to form a homogeneous paste.…”

Section: Methodsmentioning

confidence: 99%

Synthesis, Characterization and Enhanced Sensing Properties of a NiO/ZnO p–n Junctions Sensor for the SF6 Decomposition Byproducts SO2, SO2F2, and SOF2

Liu

Zhou

Zhang

et al. 2017

Sensors

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The detection of partial discharge and analysis of the composition and content of sulfur hexafluoride SF6 gas components are important to evaluate the operating state and insulation level of gas-insulated switchgear (GIS) equipment. This paper reported a novel sensing material made of pure ZnO and NiO-decorated ZnO nanoflowers which were synthesized by a facile and environment friendly hydrothermal process for the detection of SF6 decomposition byproducts. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS) were used to characterize the structural and morphological properties of the prepared gas-sensitive materials. Planar-type chemical gas sensors were fabricated and their gas sensing performances toward the SF6 decomposition byproducts SO2, SO2F2, and SOF2 were systemically investigated. Interestingly, the sensing behaviors of the fabricated ZnO nanoflowers-based sensor to SO2, SO2F2, and SOF2 gases can be obviously enhanced in terms of lower optimal operating temperature, higher gas response and shorter response-recovery time by introducing NiO. Finally, a possible gas sensing mechanism for the formation of the p–n junctions between NiO and ZnO is proposed to explain the enhanced gas response. All results demonstrate a promising approach to fabricate high-performance gas sensors to detect SF6 decomposition byproducts.

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Section: Methodsmentioning

confidence: 99%

Synthesis, Characterization and Enhanced Sensing Properties of a NiO/ZnO p–n Junctions Sensor for the SF6 Decomposition Byproducts SO2, SO2F2, and SOF2

Liu

Zhou

Zhang

et al. 2017

Sensors

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“…The wide applications of SnO 2 are greatly benefited from the synthesis methods in its nanostructured materials with different sizes and novel morphologies. Nanostructured SnO 2 with various morphologies, such as three-dimensional nanospheres [22][23][24], twodimensional nanofilms [21,[25][26][27][28] or nanosheets [29,30], and one-dimensional nanowires [20] or nanorods [29][30][31][32] has been successfully fabricated and played an important role in their applications. When the size of the SnO 2 nanoparticles reduces to 1-10 nm, the unique physical and chemical properties will make prominent due to quantum size effect [33].…”

Section: Introductionmentioning

confidence: 99%

Highlights on advances in SnO₂ quantum dots: insights into synthesis strategies, modifications and applications

Chen

Huang

et al. 2018

Materials Research Letters

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The applications of SnO 2 are benefited from its nanostructure with different sizes and novel morphologies. When the size of nanoparticles reduces to 1-10 nm, the unique physical and chemical properties will make prominent. SnO 2 quantum dots (QDs), a type of zero-dimensional ultrasmall SnO 2 nanomaterials with a size in 1-10 nm, have displayed unique physical and chemical properties, which are different from those of their larger-sized ones. This review summarizes various synthesis strategies of SnO 2 QDs and the methods of their modifications, discusses their applications in lithium-ion batteries, photocatalysis, and gas sensors. These applications profit from the characteristic properties inherent in SnO 2 QDs. IMPACT STATEMENT This paper provides a comprehensive understanding for fabricating SnO 2 quantum dots and their modifications via various methods for the applications in lithium-ion batteries, photocatalytic degradations, and solid-state gas sensors.

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“…Therefore, reliable, economical and portable acetylene gas sensors are of great importance to many applications. In recent years, a lot of interest has been attracted surrounding the development of effective techniques and sensitive methods for acetylene gas detection, such as photoacoustic spectroscopy [ 7 ], optical fiber [ 6 , 8 ] and metal-oxide semiconductors (MOS) and nanomaterial-based sensors (i.e., PdO-decorated SnO 2 [ 9 ], Au/multi-wall carbon nanotubes [ 10 ], Sm 2 O 3 -decorated SnO 2 [ 11 ], Ag-loaded ZnO [ 12 , 13 , 14 ] and NiO/SnO 2 heterostructures [ 15 ]). Among them, metal oxides have become important candidates for acetylene sensing due to their unique advantages—such as their small size and simplicity of integration—but they lack selectivity towards different gas species, and often require high operating temperatures and have high power consumption [ 16 , 17 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Acetylene Gas-Sensing Properties of Layer-by-Layer Self-Assembled Ag-Decorated Tin Dioxide/Graphene Nanocomposite Film

et al. 2017

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This paper demonstrates an acetylene gas sensor based on an Ag-decorated tin dioxide/reduced graphene oxide (Ag–SnO2/rGO) nanocomposite film, prepared by layer-by-layer (LbL) self-assembly technology. The as-prepared Ag–SnO2/rGO nanocomposite was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Raman spectrum. The acetylene sensing properties were investigated using different working temperatures and gas concentrations. An optimal temperature of 90 °C was determined, and the Ag–SnO2/rGO nanocomposite sensor exhibited excellent sensing behaviors towards acetylene, in terms of response, repeatability, stability and response/recovery characteristics, which were superior to the pure SnO2 and SnO2/rGO film sensors. The sensing mechanism of the Ag–SnO2/rGO sensor was attributed to the synergistic effect of the ternary nanomaterials, and the heterojunctions created at the interfaces between SnO2 and rGO. This work indicates that the Ag–SnO2/rGO nanocomposite is a good candidate for constructing a low-temperature acetylene sensor.

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Fabrication and Enhanced Acetylene Sensing Properties of PdO-Decorated SnO<SUB>2</SUB> Composites Chemical Sensor

Cited by 8 publications

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Synthesis, Characterization and Enhanced Sensing Properties of a NiO/ZnO p–n Junctions Sensor for the SF6 Decomposition Byproducts SO2, SO2F2, and SOF2

Synthesis, Characterization and Enhanced Sensing Properties of a NiO/ZnO p–n Junctions Sensor for the SF6 Decomposition Byproducts SO2, SO2F2, and SOF2

Highlights on advances in SnO₂ quantum dots: insights into synthesis strategies, modifications and applications

Acetylene Gas-Sensing Properties of Layer-by-Layer Self-Assembled Ag-Decorated Tin Dioxide/Graphene Nanocomposite Film

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Fabrication and Enhanced Acetylene Sensing Properties of PdO-Decorated SnO<SUB>2</SUB> Composites Chemical Sensor

Cited by 8 publications

References 0 publications

Synthesis, Characterization and Enhanced Sensing Properties of a NiO/ZnO p–n Junctions Sensor for the SF6 Decomposition Byproducts SO2, SO2F2, and SOF2

Synthesis, Characterization and Enhanced Sensing Properties of a NiO/ZnO p–n Junctions Sensor for the SF6 Decomposition Byproducts SO2, SO2F2, and SOF2

Highlights on advances in SnO2 quantum dots: insights into synthesis strategies, modifications and applications

Acetylene Gas-Sensing Properties of Layer-by-Layer Self-Assembled Ag-Decorated Tin Dioxide/Graphene Nanocomposite Film

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Highlights on advances in SnO₂ quantum dots: insights into synthesis strategies, modifications and applications