nanorod zno gas sensor h2s

Amorphous Pd-assisted H2 detection of ZnO nanorod gas ...

Keywords: Amorphous palladium, ZnO nanorod, Hydrogen, Gas sensor 1. Introduction Fuel cells, which are operated by hydrogen (H 2) gas, have been highlighted as a promising energy devices [1,2]. Unfortunately, the flammability of H 2 in air at concentrations higher than 4 % is a considerable safety issue [3]. In this regard, a gas sensor that can detect small amounts of H 2 should be developed ...

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CuO/ZnO Heterostructured Nanorods: Photochemical Synthesis ...

The H2S gas sensing properties of CuO/ZnO nanorod bundles was evaluated in air containing dilute H2S gas at sensing temperatures (Ts) ≤ 500 °C. The response of CuO/ZnO nanorod sensors to H2S gas was enhanced compared to that of bare ZnO nanorods. The heterostructured nanorods showed an exponential increase in sensing tendency with Ts. X-ray photoelectron spectroscopy analysis results ...

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Solution-Processed Gas Sensors Based on ZnO Nanorods Array ...

In this paper, thin film gas sensors made from 8-nm-diameter and exposed-{10-10}-facet ZnO nanorods self-aligning along the ceramic tube are fabricated by a simple dip-coating method. On the sensor surface, we successfully synthesize a ZnO nanorods array exposed with (0001) plane in situ by a facile solution-processing technique. Compared with the unprocessed sensor (, dip-coated ZnO film ...

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Heterostructured NiO/ZnO Nanorod Arrays with Significantly ...

H2S gas sensors were fabricated using p-n heterojunctions of NiO/ZnO, in which the ZnO nanorod arrays were wrapped with NiO nanosheets via a hydrothermal synthesis method. When the H2S gas molecules were adsorbed and then oxidized on the ZnO surfaces, the free electrons were released. The increase in the electron concentration on the ZnO boosts the transport speed of the electrons on both ...

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Nanorod based Schottky contact gas sensors in reversed ...

Fabrication of Lettuce-Like ZnO Gas Sensor with Enhanced H2S Gas Sensitivity Ziyang Yu et al-Ultraviolet irradiation enhanced formaldehyde-sensing performance based on SnO 2 @TiO 2 nanofiber heteroarchitectures Kunquan Chen et al-Transient Bending Vibration of a Piezoelectric Semiconductor Nanofiber Under a Suddenly Applied Shear Force Yuxing Liang et al-This content was downloaded …

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CuO nanoparticle decorated ZnO nanorod sensor for low ...

· To demonstrate the practical application of the synthesized heterostructured porous CuO/ZnO nanorod hybrid, the sensing properties for H 2 S at low operating temperatures were investigated. Fig. 6 plots the response of the CuO NP decorated porous ZnO NR sensor exposed to 100 ppm H 2 S in the temperature range from 40 to 220 °C.

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ADesigned [email protected] Core–Shell Nanorod Film as aGas Sensor ...

& Gas Sensors |Hot Paper| ADesigned [email protected] Core–Shell Nanorod Film as aGas Sensor with Excellent Selectivity for H2 over CO Xiaonan Wu, Shunshun Xiong, Zhenghao Mao, Sheng Hu,* and Xinggui Long*[a] Abstract: The development of H2 gas sensors is important for H2 production as afuel. In this work, [email protected]– shell nanorod film is designed and synthesized as agas sensor …

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Heterostructured NiO/ZnO Nanorod Arrays with Significantly ...

The manuscript entitled: "Excellent sensing performance for H2S gas of NiO/ZnO heterostructured nanorod arrays and mechanism study" proposed a H2S gas sensor with an amazing detection limit of ppm. Nevertheless some aspects are to be improved.-The keywords have to be more specific "H2S gas sensor" -Correct electricity properties with -electric properties.-In Introduction specify the limits ...

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Synthesis of CdS nanorod arrays and their applications in ...

powered active H2S sensor Yuxin Nie, Ping Deng, Yayu Zhao et al.-Pt/ZnO nanoarray nanogenerator as self-powered active gas sensor with linear ethanol sensing at room temperature Yayu Zhao, Xuan Lai, Ping Deng et al.-Surface free-carrier screening effect on the output of a ZnO nanowire nanogenerator and its potential as a self-powered active gas sensor Xinyu Xue, Yuxin Nie, Bin He et al.-Recent ...

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Mechanism Study of ZnO Nanorod-Bundle Sensors for H2S Gas ...

The response of ZnO nanorod-bundle sensors to H2S gas increased with Ts; this trend may be due to chemical reaction of nanorods with gas molecules. X-ray photoelectron spectroscopy results indicated that the sensing mechanism of the ZnO nanorod-bundle sensor was explained by both the well-known surface reaction between H2S and adsorbed oxygen on ZnO, and the formation of zinc−sulfur bonding ...

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