Promoting effect of adding carbon nanotubes on sensing characteristics of ZnO hollow sphere-based gas sensors to detect volatile organic compounds

Farbod, Mansoor; Joula, Mohsen Heidari; Vaezi, M.R.

doi:10.1016/j.matchemphys.2016.03.004

Cited by 31 publications

(19 citation statements)

References 53 publications

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“…In conclusion, the adsorption and desorption processes have been quickly completed on the surface of the gas sensing material. 17 Large specic surface of as-synthesized tube in tube nanostructure, providing a sufficient number of active sites, can facilitate fast response and recovery characteristics. 3 An advantage of gas sensor materials is to have a linear function between the response and test gas concentration.…”

Section: The Gas Sensing Performancesmentioning

confidence: 99%

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Tube in tube ZnO/ZnCo₂O₄ nanostructure synthesized by facile single capillary electrospinning with enhanced ethanol gas-sensing properties

Alali

Liu

et al. 2017

RSC Adv.

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Section: The Gas Sensing Performancesmentioning

confidence: 99%

“…3 An advantage of gas sensor materials is to have a linear function between the response and test gas concentration. 17 A dynamic response of the ZnO/ZnCo 2 O 4 tube in tube nanostructure under gas concentrations in the range 25 ppm to 200 ppm ethanol at optimal temperature is shown in Fig. 7(a).…”

Section: The Gas Sensing Performancesmentioning

confidence: 99%

Tube in tube ZnO/ZnCo₂O₄ nanostructure synthesized by facile single capillary electrospinning with enhanced ethanol gas-sensing properties

Alali

Liu

et al. 2017

RSC Adv.

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“…The low-cost and portable approach for ether detection is required because of the increasing attention on environmental monitoring, homeland security, agriculture, and medical applications [48][49][50]. Ether is widely used both in laboratory and industry.…”

Section: Cataluminescent Gas Sensors For Ether Detectionmentioning

confidence: 99%

Catalysis-Based Cataluminescent and Conductometric Gas Sensors: Sensing Nanomaterials, Mechanism, Applications and Perspectives

et al. 2016

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Gas environment detection has become more urgent and significant, for both industrial manufacturing and environment monitoring. Gas sensors based on a catalytically-sensing mechanism are one of the most important types of devices for gas detection, and have been of great interest during the past decades. However, even though many efforts have contributed to this area, some great challenges still remain, such as the development of sensitively and selectively sensing catalysts. In this review, two representative catalysis-based gas sensors, cataluminescent and conductometric sensors, the basis of optical and electric signal acquisition, respectively, are summarized comprehensively. The current challenges have been presented. Recent research progress on the working mechanism, sensing nanomaterials, and applications reported by our group and some other researchers have been discussed systematically. The future trends and prospects of the catalysis-based gas sensors have also been presented.

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“…Functionalization of semiconducting oxides via hybridizing them with appropriate metallic or carbon nanostructures is known to be a very powerful strategy to strongly enhance and likewise to control the oxides’ electrical, chemical and physical properties, particularly nanoscopic dimensions and hence adequate applications 1 – 6 . Thus, these approaches are widely adopted and investigated, especially in the field of new nanomaterials for sensing applications 2 , 3 , 5 , 7 – 10 . The combination of two materials often leads to apparition of new and unique effects.…”

Section: Introductionmentioning

confidence: 99%

Sensing performances of pure and hybridized carbon nanotubes-ZnO nanowire networks: A detailed study

Lupan

Schütt

Postica

et al. 2017

Sci Rep

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In this work, the influence of carbon nanotube (CNT) hybridization on ultraviolet (UV) and gas sensing properties of individual and networked ZnO nanowires (NWs) is investigated in detail. The CNT concentration was varied to achieve optimal conditions for the hybrid with improved sensing properties. In case of CNT decorated ZnO nanonetworks, the influence of relative humidity (RH) and applied bias voltage on the UV sensing properties was thoroughly studied. By rising the CNT content to about 2.0 wt% (with respect to the entire ZnO network) the UV sensing response is considerably increased from 150 to 7300 (about 50 times). With respect to gas sensing, the ZnO-CNT networks demonstrate an excellent selectivity as well as a high gas response to NH3 vapor. A response of 430 to 50 ppm at room temperature was obtained, with an estimated detection limit of about 0.4 ppm. Based on those results, several devices consisting of individual ZnO NWs covered with CNTs were fabricated using a FIB/SEM system. The highest sensing performance was obtained for the finest NW with diameter (D) of 100 nm, with a response of about 4 to 10 ppm NH3 vapor at room temperature.

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Promoting effect of adding carbon nanotubes on sensing characteristics of ZnO hollow sphere-based gas sensors to detect volatile organic compounds

Cited by 31 publications

References 53 publications

Tube in tube ZnO/ZnCo₂O₄ nanostructure synthesized by facile single capillary electrospinning with enhanced ethanol gas-sensing properties

Tube in tube ZnO/ZnCo₂O₄ nanostructure synthesized by facile single capillary electrospinning with enhanced ethanol gas-sensing properties

Catalysis-Based Cataluminescent and Conductometric Gas Sensors: Sensing Nanomaterials, Mechanism, Applications and Perspectives

Sensing performances of pure and hybridized carbon nanotubes-ZnO nanowire networks: A detailed study

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Promoting effect of adding carbon nanotubes on sensing characteristics of ZnO hollow sphere-based gas sensors to detect volatile organic compounds

Cited by 31 publications

References 53 publications

Tube in tube ZnO/ZnCo2O4 nanostructure synthesized by facile single capillary electrospinning with enhanced ethanol gas-sensing properties

Tube in tube ZnO/ZnCo2O4 nanostructure synthesized by facile single capillary electrospinning with enhanced ethanol gas-sensing properties

Catalysis-Based Cataluminescent and Conductometric Gas Sensors: Sensing Nanomaterials, Mechanism, Applications and Perspectives

Sensing performances of pure and hybridized carbon nanotubes-ZnO nanowire networks: A detailed study

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Tube in tube ZnO/ZnCo₂O₄ nanostructure synthesized by facile single capillary electrospinning with enhanced ethanol gas-sensing properties

Tube in tube ZnO/ZnCo₂O₄ nanostructure synthesized by facile single capillary electrospinning with enhanced ethanol gas-sensing properties