A simple and low-cost amperometric sensor for measuring H2, CO, and CH4

Fadeyev, G.; Kalyakin, A. S.; Gorbova, E.; Brouzgou, A.; Demin, A.; Volkov, Alexander; Tsiakaras, Panagiotis

doi:10.1016/j.snb.2015.07.034

Cited by 19 publications

(8 citation statements)

References 25 publications

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“…Zirconium oxide is a highly attractive ceramic material with excellent mechanical and catalytic properties, good ionic conductivity and high temperature resistance. 1,2 Its industrial applications range from technical ceramics with high durability and good mechanically stability, 3 gas sensors, 4 biomedical devices 5 to catalysts for a broad range of significant industrial syntheses. [6][7][8][9] The use of nanoparticular zirconia can lead to advantageous effects, such as transparency, higher toughening or better catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Fractal growth of ZrO₂nanoparticles induced by synthesis conditions

et al. 2016

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Strong changes in morphology and phase composition of zirconia nanoparticles can be induced by altering the growth conditions during nanoparticle synthesis. Here, we demonstrate that fractal ZrO 2 nanocrystals showing high specific surface area can be obtained in the nonaqueous synthesis by variation of temperature and precursor concentration. The growth process was studied in detail revealing a size increase from 2.7 to 7 nm as well as a change in the polymorphic composition from tetragonal to monoclinic zirconia. TEM measurements of samples withdrawn over the course of the synthesis showed that particles grow from roundish to dendritic shapes during the phase transformation. In contrast to the common assumption that the phase transition is controlled by thermodynamics, our data shows that the transition is rather governed by kinetics.

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Section: Introductionmentioning

confidence: 99%

Fractal growth of ZrO₂nanoparticles induced by synthesis conditions

et al. 2016

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“…Additionally, the detection of combustible gases in mixtures of combustible gas+N 2 is interesting from a practical point of view, because most thermalcatalytic analyzers cannot effectively detect combustible gases in oxygen-free atmospheres. Recently, Fadeyev et al [50] fabricated an amperometric sensor for the detection of H 2 , CO, and CH 4 in nitrogen for intermediate temperatures (450 • C). As observed from Figure 2A, the abovementioned sensor consists of two cells based on 9YSZ (0.91Zr + 0.09Y 2 O 3 ).…”

Section: Amperometric Combustible Gas Sensorsmentioning

confidence: 99%

“…Furthermore, due to the higher polarization resistance of the electrode, the total resistance of the sensor for N 2 + 6%CO is about 16 kΩ. In all the tested combustible gases, the limiting current is linearly proportional to the concentration, as seen in Figure 2B(d) [50]. From Equation ( 14), the diffusion coefficient for each tested gas is calculated.…”

Section: Amperometric Combustible Gas Sensorsmentioning

confidence: 99%

Fundamentals and Principles of Solid-State Electrochemical Sensors for High Temperature Gas Detection

et al. 2021

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The rapid development of science, technology, and engineering in the 21st century has offered a remarkable rise in our living standards. However, at the same time, serious environmental issues have emerged, such as acid rain and the greenhouse effect, which are associated with the ever-increasing need for energy consumption, 85% of which comes from fossil fuels combustion. From this combustion process, except for energy, the main greenhouse gases-carbon dioxide and steam-are produced. Moreover, during industrial processes, many hazardous gases are emitted. For this reason, gas-detecting devices, such as electrochemical gas sensors able to analyze the composition of a target atmosphere in real time, are important for further improving our living quality. Such devices can help address environmental issues and inform us about the presence of dangerous gases. Furthermore, as non-renewable energy sources run out, there is a need for energy saving. By analyzing the composition of combustion emissions of automobiles or industries, combustion processes can be optimized. This review deals with electrochemical gas sensors based on solid oxide electrolytes, which are employed for the detection of hazardous gasses at high temperatures and aggressive environments. The fundamentals, the principle of operation, and the configuration of potentiometric, amperometric, combined (amperometric-potentiometric), and mixed-potential gas sensors are presented. Moreover, the results of previous studies on carbon oxides (COx), nitrogen oxides (NOx), hydrogen (H2), oxygen (O2), ammonia (NH3), and humidity (steam) electrochemical sensors are reported and discussed. Emphasis is given to sensors based on oxygen ion and proton-conducting electrolytes.

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“…Unfortunately the sensors measuring these quantities, if available, are too expensive or unreliable [29,4,32,22,10,11]. However, in the context of anaerobic digestion, measuring the biogas production is an easy and cheap alternative [18,30,31,17]. In this work, we address the problem of reconstructing the state variables of the chemostat model, which is often considered as a good representation of the anaerobic digestion process, with the single measurement of biogas flow rate.…”

Section: Introductionmentioning

confidence: 99%