| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Tiginyanu, Ion
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2023Synthesis and Nanostructure Investigation of Hybrid β-Ga2 O3 /ZnGa2 O4 Nanocomposite Networks with Narrow-Band Green Luminescence and High Initial Electrochemical Capacitycitations
- 2020Aero-Ga(2)O(3)Nanomaterial Electromagnetically Transparent from Microwaves to Terahertz for Internet of Things Applicationscitations
- 2019Individual CdS-covered aerographite microtubes for room temperature VOC sensing with high selectivitycitations
- 2018Hierarchical aerographite 3D flexible networks hybridized by InP micro/nanostructures for strain sensor applicationscitations
- 2018Hierarchical aerographite 3D flexible networks hybridized by InP micro/nanostructures for strain sensor applicationscitations
- 2018Flexible pressure sensor based on graphene aerogel microstructures functionalized with CdS nanocrystalline thin filmcitations
- 2018Zinc oxide nanotetrapods with four different arm morphologies for versatile nanosensorscitations
- 2018ZnAl2O4-Functionalized Zinc Oxide Microstructures for Highly Selective Hydrogen Gas Sensing Applicationscitations
- 2016Nanostructures and Thin Films for Multifunctional Applications Technology, Properties and Devicescitations
- 2016Multifunctional device based on ZnOcitations
- 2016Silver-doped zinc oxide single nanowire multifunctional nanosensor with a significant enhancement in responsecitations
- 2015Integration of individual TiO2 nanotube on the chip: Nanodevice for hydrogen sensingcitations
- 2015Integration of individual TiO2 nanotube on the chipcitations
- 2015Three-dimensional Aerographite-GaN hybrid networkscitations
- 2015Three-dimensional Aerographite-GaN hybrid networks: single step fabrication of porous and mechanically flexible materials for multifunctional applications
- 2014Versatile growth of freestanding orthorhombic α-molybdenum trioxide nano- and microstructures by rapid thermal processing for gas nanosensorscitations
Places of action
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article
ZnAl2O4-Functionalized Zinc Oxide Microstructures for Highly Selective Hydrogen Gas Sensing Applications
Abstract
<p>In this work, a simple method of ZnAl<sub>2</sub>O<sub>4</sub>-functionalization of ZnO microstructures is presented. The different characterization methods (structural, chemical, and micro-Raman) demonstrated the presence of only ZnO and ZnAl<sub>2</sub>O<sub>4</sub> crystalline phases. ZnAl<sub>2</sub>O<sub>4</sub> nano-crystallites grow on the surfaces of ZnO 3D microstructures having diameters of 50–100 nm and with high density. Transmission electron microscopy (TEM) and high-resolution TEM (HRTEM) results clearly show ZnAl<sub>2</sub>O<sub>4</sub> crystallites functionalizing zinc oxide tetrapod arms. The individual structures (microwires (MWs) and three-dimensional (3D) tetrapods (Ts)) are integrated into functional devices, suitable for gas sensing applications. All devices show excellent hydrogen gas selectivity at relatively low operating temperature in the range of 25–100 °C. The highest gas sensing performances are obtained based on individual ZnAl<sub>2</sub>O<sub>4</sub>-functionalized ZnO tetrapods (ZnAl<sub>2</sub>O<sub>4</sub>/ZnO-T, with an arm diameter (D) of ≈400 nm) and a response of ≈2 at 25 °C to 100 ppm of hydrogen gas (H<sub>2</sub>), while a ZnAl<sub>2</sub>O<sub>4</sub>/ZnO-MW (D ≈ 400 nm) shows only a response of ≈1.1. The Al-doped ZnO MW (D ≈ 400 nm) without ZnAl<sub>2</sub>O<sub>4</sub> elaborated in another work, chosen only for comparison reason, shows no response up to 800 ppm H<sub>2</sub> gas concentration. A gas sensing mechanism is proposed for a single ZnAl<sub>2</sub>O<sub>4</sub>/ZnO-T microstructure based sensor. The obtained results on ZnAl<sub>2</sub>O<sub>4</sub>/ZnO-T-based devices is superior to many reported performances of other individual metal oxide nanostructures with much lower diameter, showing promising results for room temperature H<sub>2</sub> gas sensing applications.</p>