Gas sensing properties and modeling of YCoO3 based perovskite materials

Addabbo, Tommaso; Bertocci, Francesco; Fort, Ada; Gregorkiewitz, M.; Mugnaini, Marco; Spinicci, R.

doi:10.1016/j.snb.2015.07.079

Cited by 44 publications

(33 citation statements)

References 53 publications

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“…Alternatively, other types of Pd-doped materials were obtained by impregnation, i.e., preparing a solution of Pd acetate in acetone and adding it to the powder of YCoO

_{3}

in the desired proportions. The dispersion is dried in the temperature range between

500^{\circ}

C and

650^{\circ}

C for a time ranging from 6 to 18 h. The prepared powders were characterized in terms of composition and structure, using X-ray diffraction (XRD): in all cases, the predominant phase was a perovskite (>80% w ) with a modified composition [3]. …”

Section: Preparation Of the Sensing Materials Sensor Realization mentioning

confidence: 99%

“…It can be seen that Mt5 is the stoichiometric base material, prepared with an equimolar amount of Y and Co. Mt4 and Mt6 are non-stoichiometric perovskites prepared with a Y:Co molar ratio of 1.1:1 and 1:0.9, respectively. These materials are included because they showed enhanced responses to NO

_{2}

[2,3]. …”

Section: Preparation Of the Sensing Materials Sensor Realization mentioning

confidence: 99%

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Optimization of Perovskite Gas Sensor Performance: Characterization, Measurement and Experimental Design

Bertocci

Fort

Mugnaini

et al. 2017

Sensors

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Eight different types of nanostructured perovskites based on YCoO3 with different chemical compositions are prepared as gas sensor materials, and they are studied with two target gases NO2 and CO. Moreover, a statistical approach is adopted to optimize their performance. The innovative contribution is carried out through a split-plot design planning and modeling, also involving random effects, for studying Metal Oxide Semiconductors (MOX) sensors in a robust design context. The statistical results prove the validity of the proposed approach; in fact, for each material type, the variation of the electrical resistance achieves a satisfactory optimized value conditional to the working temperature and by controlling for the gas concentration variability. Just to mention some results, the sensing material YCo0.9Pd0.1O3 (Mt1) achieved excellent solutions during the optimization procedure. In particular, Mt1 resulted in being useful and feasible for the detection of both gases, with optimal response equal to +10.23% and working temperature at 312∘C for CO (284 ppm, from design) and response equal to −14.17% at 185∘C for NO2 (16 ppm, from design). Analogously, for NO2 (16 ppm, from design), the material type YCo0.9O2.85+1%Pd (Mt8) allows for optimizing the response value at −15.39% with a working temperature at 181.0∘C, whereas for YCo0.95Pd0.05O3 (Mt3), the best response value is achieved at −15.40% with the temperature equal to 204∘C.

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“…Alternatively, other types of Pd-doped materials were obtained by impregnation, i.e., preparing a solution of Pd acetate in acetone and adding it to the powder of YCoO

_{3}

in the desired proportions. The dispersion is dried in the temperature range between

500^{\circ}

C and

650^{\circ}

Section: Preparation Of the Sensing Materials Sensor Realization mentioning

confidence: 99%

_{2}

[2,3]. …”

Section: Preparation Of the Sensing Materials Sensor Realization mentioning

confidence: 99%

Optimization of Perovskite Gas Sensor Performance: Characterization, Measurement and Experimental Design

Bertocci

Fort

Mugnaini

et al. 2017

Sensors

Self Cite

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“…YCoO 3 perovskite materials with a tunnel structure and octahedral framework containing platinum or palladium were investigated, analyzing the responses to both oxidizing and reducing gases such as CO, NO 2 , NO and CH 4 [24]. …”

Section: Gas Sensorsmentioning

confidence: 99%

Chemical Sensors and Biosensors in Italy: A Review of the 2015 Literature

Compagnone

Francia

Natale

et al. 2017

Sensors

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The contributions of Italian researchers to sensor research in 2015 is reviewed. The analysis of the activities in one year allows one to obtain a snapshot of the Italian scenario capturing the main directions of the research activities. Furthermore, the distance of more than one year makes meaningful the bibliometric analysis of the reviewed papers. The review shows a research community distributed among different scientific disciplines, from chemistry, physics, engineering, and material science, with a strong interest in collaborative works.

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“…3 and Mat. 4 were prepared by the sol-gel technique [17]. Starting from a water solution of nitrate hydrates salts of Y and Co with the addition of citric acid, the solution is heated under continuous stirring at 100°C and dried at 200°C.…”

Section: Materials Under Study and Measurements Setupmentioning

confidence: 99%

Stability evaluation of YCoO3 basedperovskites used for NO2 detection

Bertocci

Fort

Mugnaini

2016

2016 IEEE Sensors Applications Symposium (SAS)

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In this paper the stability and reliability of perovskite YCoO3 used as sensor material for the detection of nitrogen dioxide are studied. The sensors typically operate at high temperature in presence of active gases, and therefore the sensing chemical film is the main responsible for their long-term stability. The drift of the electrical resistance baseline and the loss of response amplitude must be minimized in order to grant the device reliability at a certain time. This work proposes a method that allows for stressing chemical sensors in order to assess their degree of ageing. The proposed technique could be a useful tool for the characterization of NO2 sensors used in air quality monitoring systems, where large sensitivity, low power consumption and long-term stability are required

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Gas sensing properties and modeling of YCoO3 based perovskite materials

Cited by 44 publications

References 53 publications

Optimization of Perovskite Gas Sensor Performance: Characterization, Measurement and Experimental Design

Optimization of Perovskite Gas Sensor Performance: Characterization, Measurement and Experimental Design

Chemical Sensors and Biosensors in Italy: A Review of the 2015 Literature

Stability evaluation of YCoO3 basedperovskites used for NO2 detection

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