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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.

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Synthesis of a functionalized multi-walled carbon nanotube decorated ruskin michelle-like ZnO nanocomposite and its application in the development of a highly sensitive hydroquinone sensor

TL;DR: In this article, a functionalized multi-walled carbon nanotube (f-MWCNT) decorated ruskin michelle-like zinc oxide (ZnO) nanocomposite for the determination of the environmental pollutant hydroquinone (HQ) is reported.
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Growth and photoluminescence properties of vertically aligned SnO2 nanowires

TL;DR: In this article, the first vertically aligned SnO 2 nanowires (NWs) were grown by a vapor-liquid-solid method on c -sapphire with gold as a catalyst under Ar gas flow.
Journal ArticleDOI

Fast formaldehyde gas sensing response properties of ultrathin SnO2 nanosheets

TL;DR: In this paper, the ultrathin SnO2 nanosheets are configured as high performance sensors to detect formaldehyde, and show very fast response times (<1 s), recovery times (6 s), good repeatability and selectivity at a relatively low working temperature.
Journal ArticleDOI

Ethanol gas-sensing characteristic of the Zn2SnO4 nanospheres

TL;DR: In this paper, a gas sensor was constructed with the prepared Zn 2 SnO 4 nanospheres and used to detect ethanol gas and some other gases and showed a remarkable gas-sensing performance, including low operating temperature (180°C), high response (23.4-50ppm ethanol gas), fast response and excellent selectivity to ethanol gas.
Journal ArticleDOI

From function-guided assembly of a lotus leaf-like ZnO nanostructure to a formaldehyde gas-sensing application

TL;DR: In this paper, a facile solution-based route is developed for the preparation of aligned lotus leaf-like ZnO nanostructure via an immersion of oriented ZnOs in hexamethylenetetramine solution at a water-bath temperature of 90°C.
References
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Journal ArticleDOI

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.
Journal ArticleDOI

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.
Journal ArticleDOI

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.
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