Journal ArticleDOI
Nanopillar ZnO gas sensor for hydrogen and ethanol
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TLDR
Aligned zinc oxide nanorods were synthesized directly via a two-step solution approach on an Al2O3 tube, and were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) as mentioned in this paper.Abstract:
Aligned zinc oxide nanorods were synthesized directly via a two-step solution approach on an Al2O3 tube, and were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The zinc oxide nanorods prepared were uniform with diameters of 10–30 nm and lengths about 1.4 μm. The response Sr (= Ra/Rg) of the aligned zinc oxide nanorod sensor reached 18.29 and 10.41 to 100 ppm ethanol and hydrogen, respectively, which was a two-fold increase compared with that reported in literature, demonstrating the potential for developing stable and sensitive gas sensors.read more
Citations
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A novel hetero-structure sensor based on Au/Mg-doped TiO2/SnO2 nanosheets directly grown on Al2O3 ceramic tubes
Hongyan Xu,Dianxing Ju,Zhengrun Chen,Rui Han,Ting Zhai,Huanqin Yu,Caiyun Liu,Xiangwen Wu,Jieqiang Wang,Bingqiang Cao +9 more
TL;DR: In this article, a gold nanoparticles-loaded Mg-doped TiO2/SnO2 heterostructure was constructed by using pulsed laser deposition (PLD) and direct current sputtering.
Journal ArticleDOI
Nanostructured PdO Thin Film from Langmuir-Blodgett Precursor for Room-Temperature H2 Gas Sensing.
Sipra Choudhury,Chirayath A. Betty,Kaustava Bhattacharyya,Vibha Saxena,Debarati Bhattacharya +4 more
TL;DR: Nanoparticulate thin films of PdO prepared using the Langmuir-Blodgett technique by thermal decomposition of a multilayer film of octadecylamine-chloropalladate complex showed H2 sensitivity in the range of 30-4000 ppm at room temperature and showed photosensitivity with increase in current upon shining of visible light.
Journal ArticleDOI
A classification and ranking system on the H2 gas sensing capabilities of nanomaterials based on proposed coefficients of sensor performance and sensor efficiency equations
Bonex W. Mwakikunga,Bonex W. Mwakikunga,Sarah Motshekga,Lucky Sikhwivhilu,Lucky Sikhwivhilu,M.K. Moodley,Manfred Scriba,Gerald F. Malgas,A. Simo,B.T. Sone,Malik Maaza,Suprakas Sinha Ray,Suprakas Sinha Ray +12 more
TL;DR: In this article, the authors defined a coefficient of performance based on the traditional definition of response, S, of a chemoresistive sensing material to a specific gas from resistance-time data.
Journal ArticleDOI
Sol-gel derived amorphous/nanocrystalline MgZnO thin films annealed by atmospheric pressure plasma jets
TL;DR: In this article, the characterization of sol-gel derived MgZnO thin films annealed by atmospheric pressure plasma jets (APPJs) is presented. But the results are limited to the case when the material is amorphous/nanocrystalline.
Journal ArticleDOI
Template-free synthesis of monodisperse α-Fe2O3 porous ellipsoids and their application to gas sensors
TL;DR: In this paper, a facile one-step template-free hydrothermal method was used to synthesize monodisperse porous α-Fe2O3 ellipsoids composed of primary nanocrystals.
References
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Reversible super-hydrophobicity to super-hydrophilicity transition of aligned ZnO nanorod films
TL;DR: Remarkable surface wettability transition occurs with an inducement of ultraviolet (UV) for aligned ZnO nanorod films and this reversible effect is ascribed to the cooperation of the surface photosensitivity and the aligned nanostructure.
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Detection of CO and O2 Using Tin Oxide Nanowire Sensors
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Photochemical Sensing of NO2 with SnO2 Nanoribbon Nanosensors at Room Temperature
TL;DR: The development of photochemical NO2 sensors that work at room temperature and are based on individual single-crystalline SnO2 nanoribbons are reported, which once again demonstrate that seemingly small variations in ligand structure can result in significant improvements in catalysis.
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Grain size control and gas sensing properties of ZnO gas sensor
TL;DR: In this article, the mean grain size and lattice distortion of ZnO gas sensors were calculated with the Cauchy-Cauchy and Debye-Scherrer methods, respectively.