Spinel ferrite oxide semiconductor gas sensors

Šutka, Andris; Gross, Kārlis Agris

doi:10.1016/j.snb.2015.08.027

Cited by 381 publications

(156 citation statements)

References 121 publications

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“…For the past decade, the concept of integration has been the main drive that supported research and development in the domain of smart devices for remote sensing, that is, sensors based on changes in electrical conductivity [1]. The main advantages presented by this category of gas sensors are low cost compared to other sensing technologies, low power requirements, quick response times (seconds), high sensitivity to small concentrations of a specific gas, complete sensor recovery, lightweight, and long term stability.…”

Section: Introductionmentioning

confidence: 99%

“…The oxide-based semiconductor sensors have been used worldwide to detect toxic, hazardous and combustible gases (e.g., C 2 H 5 OH, H 2 S, H 2 , various hydrocarbons, volatile organic compounds) for the safety of humans and for a better control over the surrounding environment [1–3]. Thin layers of metal oxide semiconductors were used for the first time as sensing materials in 1962, when a report was released by Siyama et al [4] regarding a thin film of ZnO.…”

Section: Introductionmentioning

confidence: 99%

“…For p-type oxide semiconductors [5], the observed electrical changes upon exposure to oxidizing or reducing gases are reversed in comparison with n-type semiconductors [1]. …”

Section: Introductionmentioning

confidence: 99%

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Nanostructured SnO₂–ZnO composite gas sensors for selective detection of carbon monoxide

Chesler¹,

Hornoiu²,

Mihaiu³

et al. 2016

Beilstein J. Nanotechnol.

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A series of SnO2–ZnO composite nanostructured (thin) films with different amounts of SnO2 (from 0 to 50 wt %) was prepared and deposited on a miniaturized porous alumina transducer using the sol–gel and dip coating method. The transducer, developed by our research group, contains Au interdigital electrodes on one side and a Pt heater on the other side. The sensing films were characterized using SEM and AFM techniques. Highly toxic and flammable gases (CO, CO2, CH4, and C3H8) were tested under lab conditions (carrier gas was dry air) using a special gas sensing cell developed by our research group. The gas concentrations varied between 5 and 2000 ppm and the optimum working temperatures were in the range of 210–300 °C. It was found that the sensing performance was influenced by the amount of oxide components present in the composite material. Improved sensing performance was achieved for the ZnO (98 wt %)–SnO2 (2 wt %) composite as compared to the sensors containing only the pristine oxides. The sensor response, cross-response and recovery characteristics of the analyzed materials are reported. The high sensitivity (R S = 1.21) to low amounts of CO (5 ppm) was reported for the sensor containing a composite sensitive film with ZnO (98 wt %)–SnO2 (2 wt %). This sensor response to CO was five times higher as compared to its response to CO2, CH4, and C3H8, thus the sensor is considered to be selective for CO under these test conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nanostructured SnO₂–ZnO composite gas sensors for selective detection of carbon monoxide

Chesler¹,

Hornoiu²,

Mihaiu³

et al. 2016

Beilstein J. Nanotechnol.

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“…According to carrier type such as electron or cavity, semiconductor gas sensors can be classified into n-type (e.g., CdO and SnO 2 ) and p-type (e.g., NiO) sensors [59,60]. Most gas sensors are n-type, in which electrons are carriers instead of cavities during sensing process.…”

Section: Sensing Mechanism and Featuresmentioning

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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“…The review surveys revealed that the nanosized ferrite materials, which have high surface activity due to their small particle size and enormous surface area, have been widely studied in the field of vapour sensors in recent years. Mixed metal ferrites offer more sensitive, selective and long-term stable sensor materials [11]. The aim of the present work is to compare the prepared nanostructured NZF towards various primary alcohols like, ethanol, propanol and butanol at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Nanocrystalline Nickel Zinc Ferrite as an efficient alcohol sensor at room temperature

Mukherjee¹,

Mondal²,

Sarkar³

et al. 2017

IJEAB

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Spinel ferrite oxide semiconductor gas sensors

Cited by 381 publications

References 121 publications

Nanostructured SnO₂–ZnO composite gas sensors for selective detection of carbon monoxide

Nanostructured SnO₂–ZnO composite gas sensors for selective detection of carbon monoxide

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

Nanocrystalline Nickel Zinc Ferrite as an efficient alcohol sensor at room temperature

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Spinel ferrite oxide semiconductor gas sensors

Cited by 381 publications

References 121 publications

Nanostructured SnO2–ZnO composite gas sensors for selective detection of carbon monoxide

Nanostructured SnO2–ZnO composite gas sensors for selective detection of carbon monoxide

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

Nanocrystalline Nickel Zinc Ferrite as an efficient alcohol sensor at room temperature

Contact Info

Product

Resources

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Nanostructured SnO₂–ZnO composite gas sensors for selective detection of carbon monoxide

Nanostructured SnO₂–ZnO composite gas sensors for selective detection of carbon monoxide