nanostructured co3o4 as a co gas sensor temperature-dependent behavior

Preparation of Nanostructured Co 3 O 4 and Ru-Doped Co 3 O ...

· Many nanostructured metal oxides are being synthesized and investigated throughout the world such as ZnO, CuO, MnO 2, SnO 2, WO 3 and Co 3 O 4 nanoparticles which are finding useful applications in gas sensing (Ref 4,5,6,7,8,9,10,11,12,13), cosmetics (Ref 14), water purifiers (Ref 15), flame retardants (Ref 16), superconductors (Ref 17), batteries (Ref 18), etc. Materials like SnO 2 …

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Gas sensors based on ultrathin porous Co3O4 nanosheets to ...

The gas sensor based on the porous Co 3 O 4 nanosheets shows a superior acetone gas-sensing performance at a low operating temperature of 150 °C. The gas response to 100 ppm acetone reached , and exhibited good reproducibility. In addition, the detection limit of the Co 3 O 4 nanosheet sensor is lower than ppm, which is the diagnostic criteria exhaled from diabetes. What’s more, the ...

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(PDF) Nanostructured Multiferroics | Ramaprasad Maiti ...

Co3O4 has a spinel structure and as mixing the two phases and sintering them at high its ferromagnetic behaviour was reported earlier. 28 temperatures with long duration. The advantage of this However, ferroelectric behaviour was rather unusual. By synthesis process was that it was simple, of low cost, Rietveld analysis of X-ray diffraction data it was found that environment friendly and ...

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Review—A Pollutant Gas Sensor Based On Fe3O4 ...

· Hwang et al. decorated magnetite nanowire with Mn metal and used it as a CO gas sensor. 85 Interestingly, Fe 3 O 4 nanowire did not respond until the operating temperature reached 200 o C. At the same time, Mn-doped Fe3O4 displayed a relatively good response at room temperature with the response and recovery times of 15 s ad 100 s, respectively. The substitution of Mn ion to the Fe sites ...

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Nanostructured Co3O4 as a CO gas sensor: Temperature ...

Cobalt oxide spinel (Co3O4) with an ordered nanostructure is used as a resistive gas sensor for carbon monoxide (CO) in low ppm concentrations. The operating temperature has a strong impact on the concentration-dependent sensing behavior. At lower temperature (473K) the sensor response is governed mainly by surface coverage with CO and/or CO2, whereas at higher temperature (563K) …

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Nanostructured Co 3 O 4 as a CO gas sensor: Temperature ...

Article “Nanostructured Co 3 O 4 as a CO gas sensor: Temperature-dependent behavior” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas. By linking the information entered, we provide opportunities to make unexpected discoveries ...

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Co3O4-SiO2 nanocomposite: a very active catalyst for CO ...

The Co(3)O(4)-SiO(2) composite, the surface of which is rich in silica and Co(II) species compared with normal Co(3)O(4), exhibited very high activity for CO oxidation even at a temperature as low as -76 °C. A rather unusual temperature-dependent activity curve, with the lowest conversion at about 80 °C, was observed with a normal feed gas (H(2)O content ~3 ppm). The U-shape of the activity ...

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The growth of urchin-like Co3O4 directly on sensor ...

Abstract Urchin-like Co3O4 has successfully grown directly on ITO glass and sensor ceramic substrate through hydrothermal reaction followed by calcination. The combined characterizations of X-ray diffraction (XRD) patterns, nitrogen adsorption-desorption and scanning electron microscopy (SEM) indicate that the as-prepared product possesses good crystallinity, large specific surface area and ...

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Highly sensitive and selective ethanol sensors based on ...

· Vetter S, Haffer S, Wagner T, Tiemann M (2015) Nanostructured Co3O4 as a CO gas sensor: temperature-dependent behavior. Sensors Actuators B Chem 206:133–138. CAS Article Google Scholar Wan Q, Li QH, Chen YJ, Wang TH, He XL, Li JP, Lin CL (2004) Fabrication and ethanol sensing characteristics of ZnO nanowire gas sensors. Appl Phys Lett 84(18 ...

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Applications of Nanostructured Materials as Gas Sensors ...

Gas detection instruments are increasingly needed for industrial health and safety, environmental monitoring, and process control. To meet this demand, considerable research into new sensors is underway, including efforts to enhance the performance of traditional devices, such as resistive metal oxide sensors, through nanoengineering. The resistance of semiconductors is affected by the …

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Nanostructured Co3O4 as a CO gas sensor: Temperature ...

Cobalt oxide spinel (Co 3 O 4 ) with an ordered nanostructure is used as a resistive gas sensor for carbon monoxide (CO) in low ppm concentrations. The operating temperature has a strong impact on the concentration-dependent sensing behavior. At lower temperature (473K) the sensor response is governed mainly by surface coverage with CO and/or CO 2 , whereas at higher temperature ...

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Nanostructured Co3O4 as a CO gas sensor: Temperature ...

Abstract Cobalt oxide spinel (Co 3 O 4 ) with an ordered nanostructure is used as a resistive gas sensor for carbon monoxide (CO) in low ppm concentrations. The operating temperature has a strong impact on the concentration-dependent sensing behavior. At lower temperature (473 K) the sensor response is governed mainly by surface coverage with CO and/or CO 2 , whereas at higher temperature (563 ...

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Nanostructured Co3O4 Materials: Synthesis ...

Nanostructured Co 3 O 4 Materials: Synthesis, Characterization, and Electrochemical Behaviors as Anode Reactants in Rechargeable Lithium Ion Batteries. Bing Guo † Chunsheng Li ‡ Zhong-Yong Yuan * † View Author Information. Institute of New Catalytic Material Science, Institute of New Energy Material Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education ...

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Co3O4 Nanomaterials in Lithium‐Ion Batteries and Gas Sensors

· Co 3 O 4 nanotubes, nanorods, and nanoparticles are used as the anode materials of lithium-ion batteries. The results show that the Co 3 O 4 nanotubes prepared by a porous-alumina-template method display high discharge capacity and superior cycling reversibility. Furthermore, Co 3 O 4 nanotubes exhibit excellent sensitivity to hydrogen and alcohol, owing to their hollow, nanostructured …

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