Resistive oxygen gas sensors based on CeO2 fine powder prepared using mist pyrolysis

Izu, Noriya; Shin, Woosuck; Murayama, Norimitsu; Kanzaki, Shuzo

doi:10.1016/s0925-4005(02)00224-1

Cited by 225 publications

(112 citation statements)

References 10 publications

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“…6,7 Due to these properties, ceria based materials can find applications for catalysis, 8 as a potentially useful solid oxide fuel cell electrolyte material, 9 and in optical coatings 10 and gas sensors. 11,12 Some of these applications may benefit from using CeO 2 nanoparticles, due to the possibility to present new properties in the nanodimension and the increased material surface.…”

Section: Introductionmentioning

confidence: 99%

Influence of the nanoparticles agglomeration state in the quantum-confinement effects: Experimental evidences

2015

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The agglomeration state facilitates particle-particle interaction which produces important effects in the phonon confinement effects at the nanoscale. A partial phonon transmission between close nanoparticles yields a lower momentum conservation relaxation than in a single isolated nanoparticle. It means a larger red shift and broadening of the Raman modes than the expected ones for Raman quantum confinement effects. This particle-particle interaction can drive to error when Raman responses are used to estimate the size of the nanoscaled materials. In this work different corrections are suggested to overtake this source of error.

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Section: Introductionmentioning

confidence: 99%

Influence of the nanoparticles agglomeration state in the quantum-confinement effects: Experimental evidences

2015

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“…Cerium dioxide or ceria (CeO 2 ) is an important rare-earth oxide, which has multiple applications such as electrolyte materials of solid oxide fuel cells 1 , ultraviolet blocking materials 2 , catalysts 3 , Chemical Mechanical Polishing (CMP) 4 and oxygen gas sensors 5 . It has a fluorite-like cubic structure in which each cerium site is surrounded by eight oxygen sites in face-centered cubic (FCC) arrangement and each oxygen site has a tetrahedron cerium site.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of CeO2 nanocrystals by solvothermal route

Kumar¹,

Selvarajan²,

Muthuraj

2013

Mat. Res.

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Cerium dioxide nanoparticles were prepared by solvothermal technique. The structural analysis was carried out using X-ray diffraction. It showed that the cerium dioxide nanoparticles exhibited cubic structure. Grain sizes were estimated from High Resolution Transmission Electron Microscopy images. The size of the nanoparticles is around 20 nm. The surface morphological studies from Scanning Electron Microscope (SEM) and HRTEM depicted spherical particles with formation of clusters. Thermal and electrical Insulating behaviors were determined.

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“…C Coupling between electronic and ionic transport in solid oxides underpins an immense range of energy storage and conversion technologies. Such phenomena are further employed in macroscopic and nanoscale chemical sensors, [1][2][3] enabling the detection of a broad range of gaseous and liquid species and can be further utilized in electrochemical transducers. 4 Recently, a broad range of potential applications for ionic and mixed ionic electronic conductors (MIECs) 5,6 has emerged in information technologies for electroresistive memories and neuromorphic electronic devices.…”

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confidence: 99%

Sub-nA spatially resolved conductivity profiling of surface and interface defects in ceria films

et al. 2015

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Spatial variability of conductivity in ceria is explored using scanning probe microscopy with galvanostatic control. Ionically blocking electrodes are used to probe the conductivity under opposite polarities to reveal possible differences in the defect structure across a thin film of CeO2. Data suggest the existence of a large spatial inhomogeneity that could give rise to constant phase elements during standard electrochemical characterization, potentially affecting the overall conductivity of films on the macroscale. The approach discussed here can also be utilized for other mixed ionic electronic conductor systems including memristors and electroresistors, as well as physical systems such as ferroelectric tunneling barriers.

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Resistive oxygen gas sensors based on CeO2 fine powder prepared using mist pyrolysis

Cited by 225 publications

References 10 publications

Influence of the nanoparticles agglomeration state in the quantum-confinement effects: Experimental evidences

Influence of the nanoparticles agglomeration state in the quantum-confinement effects: Experimental evidences

Synthesis and characterization of CeO2 nanocrystals by solvothermal route

Sub-nA spatially resolved conductivity profiling of surface and interface defects in ceria films

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