Journal ArticleDOI
Enhanced sensor response of Ni-doped SnO2 hollow spheres
TLDR
In this article, a novel sensing material of Ni-doped SnO2 hollow spheres was prepared and characterized by X-ray diffraction, Xray photoelectron spectroscopy, inductively coupled plasma-optical emission spectrograms and transmission electron microscopy.Abstract:
A novel sensing material of Ni-doped SnO2 hollow spheres was prepared and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, inductively coupled plasma-optical emission spectroscopy and transmission electron microscopy. Gas sensing properties of the sensor fabricated from the as-prepared Ni-doped SnO2 hollow spheres were systematically investigated and compared with those of pristine SnO2 hollow spheres. Results showed that the Ni-doped sensor had a good selectivity to higher alcohols such as n-butanol with much higher response, while the undoped sensor exhibited poor response to all the tested gases with poor selectivity. The enhanced sensor performances are probably attributed to the formation of p–n heterojunctions between p-type NiO and n-type SnO2. It also suggests that the Ni-dopant is a promising substitute for noble metal additives to fabricate sensor materials with a low cost.read more
Citations
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Metal Oxide Nanostructures and Their Gas Sensing Properties: A Review
TL;DR: The gas sensing properties of metal oxide nanostructures assembled by nanoparticles are reviewed in this article and the effect of doping is summarized and the perspectives ofMetal oxide gas sensor are given.
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Metal oxide composites in conductometric gas sensors: Achievements and challenges
Ghenadii Korotcenkov,Beongki Cho +1 more
TL;DR: In this paper, the authors considered the features of conductometric gas sensors based on metal oxide composites and the methods of the composites forming and the advantages of their using in the development of gas sensors.
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External field-assisted laser ablation in liquid: An efficient strategy for nanocrystal synthesis and nanostructure assembly
TL;DR: Laser ablation in liquid (LAL) has received considerable attention over the last decade, and is gradually becoming an irreplaceable technique to synthesize nanocrystals and fabricate functional nanostructures because it can offer effective solutions to some challenges in the field of nanotechnology as discussed by the authors.
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Chemical and biological sensors based on metal oxide nanostructures
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Self-assembly fabrication of 3D flower-like ZnO hierarchical nanostructures and their gas sensing properties
TL;DR: In this article, a 3D hierarchical ZnO hierarchical nanostructures were fabricated from the thermal decomposition of 3D zinc hydroxide carbonate precursor, which was synthesized by a urea hydrothermal method with block copolymer F127 (EO106-PO70-EO106) as the morphology director.
References
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New approaches for improving semiconductor gas sensors
TL;DR: In this paper, the authors demonstrated that the sensing characteristics of a semiconductor gas sensor using SnO2 can be improved by controlling fundamental factors which affect its receptor and transducer functions.
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Enhanced gas sensing by individual SnO2 nanowires and nanobelts functionalized with Pd catalyst particles.
TL;DR: Pd-functionalized nanostructures exhibited a dramatic improvement in sensitivity toward oxygen and hydrogen due to the enhanced catalytic dissociation of the molecular adsorbate on the Pd nanoparticle surfaces and the subsequent diffusion of the resultant atomic species to the oxide surface.
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Grain size effects on gas sensitivity of porous SnO2-based elements
TL;DR: In this paper, the effects of grain size on gas sensitivity were investigated by using porous sintered SnO2 elements fabricated with pure and impurity-doped SnO 2 elements.
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Field-Effect Transistors Based on Single Semiconducting Oxide Nanobelts
TL;DR: In this article, field effect transistors (FETs) based on single SnO2 and ZnO nanobelts of thicknesses between 10 and 30 nm have been fabricated.
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Porous Metal Oxides as Gas Sensors
TL;DR: The role of some key structural aspects in porous gas sensors, such as grain size and agglomeration, pore size or crack-free film morphology, are addressed.