Air quality prediction by using semiconducting gas sensor with newly fabricated SmFeO3 film

Tomoda, Munenobu; Okano, Satoshi; Itagaki, Yoshiteru; Aono, Hiromichi; Sadaoka, Yoshihiko

doi:10.1016/j.snb.2003.08.013

Cited by 49 publications

(27 citation statements)

References 22 publications

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“…x M 00 1Àx O 3 and (Ln, A)M 0 O 3 , respectively [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. This method was first proposed by Gallagher in 1968 [5].…”

Section: Introductionmentioning

confidence: 99%

Structural refinement of Nd[Fe(CN)6]·4H2O and study of NdFeO3 obtained by its oxidative thermal decomposition at very low temperatures

Navarro

Pannunzio-Miner

Pagola

et al. 2005

Journal of Solid State Chemistry

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“…x M 00 1Àx O 3 and (Ln, A)M 0 O 3 , respectively [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. This method was first proposed by Gallagher in 1968 [5].…”

Section: Introductionmentioning

confidence: 99%

Structural refinement of Nd[Fe(CN)6]·4H2O and study of NdFeO3 obtained by its oxidative thermal decomposition at very low temperatures

Navarro

Pannunzio-Miner

Pagola

et al. 2005

Journal of Solid State Chemistry

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“…5) By this analysis, we found that the surface of SmFeO 3 was specifically rich in Sm, and concomitantly rich in the number of adsorbed oxygen. This result strongly suggests that the surface Sm concentration would correlate with the amount of the adsorbed oxygen.…”

Section: Introductionmentioning

confidence: 77%

VOC sensing behavior of semiconducting Sm2O3/SmFeO3 mixtures

Itagaki

Fujihashi

Aono

et al. 2015

J. Ceram. Soc. Japan

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Sm 2 O 3 /SmFeO 3 mixed powders were applied to a chemo-resistive VOC (volatile organic compound) gas sensor. The sensor response to 30 ppm toluene gas increased with increasing the Sm 2 O 3 content up to 30 wt %, but decreased by further adding. The addition of Sm 2 O 3 up to 30 wt % also enhanced the catalytic activity for toluene oxidation, as the result of the sensor response. The amount of toluene adsorption increased with increase in the surface Sm concentration. It was concluded that adding Sm 2 O 3 increased the amount of adsorbed VOCs, resulting in the enhancement of the sensor response and the catalytic activity. Furthermore, adding Sm 2 O 3 remarkably shortened the recovery time from the VOCs to air. For the ethanol sensing, adding Sm 2 O 3 was only effective on shortening the recovery time.

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“…Comparison of a and b in XRD patterns shows that the diffraction peak of curve b is very sharp and the peak intensity is stronger than that of curve a, leading to in- parameters (a, b and c) are not very large and can even be neglected, so it can be concluded that new compounds did not form after MgO loading. The existing MgO acted as a barrier against the advancement of grain boundaries of LaFeO 3 to suppress the crystallite growth of LaFeO 3 in the calcination process and the loss in surface specific area [10] . The particle morphology and composition of the MgO coated nanocomposites were determined by scanning electron microscopy (SEM) and an energy dispersive X-ray spectrometer (EDX) attached to the SEM.…”

Section: Xrd Edx-sem Tpd and Xps Analysis Of Mgo Coated Lafeomentioning

confidence: 99%

Synthesis of LaFeO3 catalytic materials and their sensing properties

Bai

Shi

et al. 2009

Sci. China Ser. B-Chem.

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LaFeO 3 is a p-type semiconductor catalytic material of perovskite structure (ABO 3 ). Its magnetic and photocatalytic properties have been widely investigated, but the gas sensing properties are seldom reported, especially for toxic and noxious gases of NO 2 and CO. The nanocomposites of LaFeO 3 and LaFe 1−x Mg x O 3 (x = 0.02, 0.04, 0.06) were prepared by various methods of the wet chemical process and their exact composition, crystal structures, grain sizes, specific surfaces, morphology and the electronic interaction between components were characterized by EDX, XRD, BET, SEM and XPS analysis. The sensors based on these nanocomposites have been fabricated to examine the sensing responses to gases, and the results show that these sensors exhibited high response to both oxidizing gas (NO 2 ) and reducing gas (CO), and the response was greatly enhanced by the surface modification of MgO. The additive method, amount of additives, and their effects on the LaFeO 3 structure and gas response have been analyzed and discussed by temperature-programmed desorption (TPD) and X-ray photoelectron spectroscopic (XPS) analysis.

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Air quality prediction by using semiconducting gas sensor with newly fabricated SmFeO3 film

Cited by 49 publications

References 22 publications

Structural refinement of Nd[Fe(CN)6]·4H2O and study of NdFeO3 obtained by its oxidative thermal decomposition at very low temperatures

Structural refinement of Nd[Fe(CN)6]·4H2O and study of NdFeO3 obtained by its oxidative thermal decomposition at very low temperatures

VOC sensing behavior of semiconducting Sm<sub>2</sub>O<sub>3</sub>/SmFeO<sub>3</sub> mixtures

Synthesis of LaFeO3 catalytic materials and their sensing properties

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