NO2-sensing properties of La0.65Sr0.35MnO3 synthesized by self-propagating combustion

Wu, Lianlian; Xia, Jinfeng; Shi, Wangyan; Jiang, Dangyu; Li, Qiang

doi:10.1007/s11581-015-1605-x

Cited by 22 publications

(4 citation statements)

References 34 publications

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“…The electrochemical reaction to the catalytic activity of the reactant gas NO 2 at TPB lower that 20% relative humidity was found to be high and is in line with the changes in the results of the response values. [84][85][86][87][88][89] Balasubramani et al 90 reported the fabrication of SnO 2 /rGO based H 2 S gas sensor with detection limit ranging from 1 to 100 ppm at room temperature with high selectivity towards H 2 S compared to other gases. 90 It was corroborated by Nyquist plot which strongly support the impedance finding.…”

Section: Different Types Of Gas Sensormentioning

confidence: 99%

Review—Recent Advances in Electrochemical Impedance Spectroscopy Based Toxic Gas Sensors Using Semiconducting Metal Oxides

Balasubramani

Chandraleka

Rao³

et al. 2020

J. Electrochem. Soc.

118

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Electrochemical Impedance Spectroscopy (EIS) in the past few years has been used to design gas sensors. EIS based gas sensing has been considered as an ultra-sensitive technique to identify and measure different toxic gases. Their sensing performance has been superior when compared to other conventional techniques. Impedance makes it possible to investigate the finer changes occurring on the surface of sensing layers leading to the identification of the target gases such as H2S. The measurements are carried out by scanning the electrode surface with a mixture of frequencies from 1 Hz to 10 MHz and recording the response as Nyquist and Bode plots. From these plots, the results can be used to elucidate the electrochemical phenomena. The acquired impedance data can be fitted into equivalent circuits and this is further modeled to obtain information about the interfacial phenomena like grain bulk resistance, grain boundary resistance, interface between electrode and sensing film resistance. These phenomena support the sensing of toxic gases from ppm - ppb level. This article focuses on impedance spectroscopy and its relevance to sensors, challenges in detecting toxic gases on the electrode surfaces prepared using semiconducting metal oxides, doped metal oxides and graphene based composites along with the research gaps, current innovations and future directions. EIS based gas sensors have high selectivity, sensitivity, reproducibility, long term stability and they also assist prediction of the electrochemical mechanisms for the analyte gases.

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Section: Different Types Of Gas Sensormentioning

confidence: 99%

Review—Recent Advances in Electrochemical Impedance Spectroscopy Based Toxic Gas Sensors Using Semiconducting Metal Oxides

Balasubramani

Chandraleka

Rao³

et al. 2020

J. Electrochem. Soc.

118

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“…According to the previous studies, the maximum degree of polymerization is achieved when the amount of citric acid is 1.5 times that of metal ions. [51][52][53] Therefore, we chose this ratio in our work. Finally, the metal oxide powder was reduced in the flowing 5 %H 2 /N 2 mixed atmosphere to obtain a homogeneous CoFe alloy.…”

Section: Resultsmentioning

confidence: 99%

“…But in fact, due to the steric effect of citrate ions, more citric acid is used than metal ions to maximize the degree of polymerization between them. According to the previous studies, the maximum degree of polymerization is achieved when the amount of citric acid is 1.5 times that of metal ions [51–53] . Therefore, we chose this ratio in our work.…”

Section: Resultsmentioning

confidence: 99%

Scalable Synthesis of Bimetallic CoFe Alloy Nanoparticles for Efficient Oxygen Evolution Reaction

Yang

Zhou

et al. 2023

ChemistrySelect

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The development of efficient electrocatalysts towards oxygen evolution reaction (OER) is critical for large-scale applications of electrochemical water splitting and metal-air cells. Usually, transition metal alloys exhibit superior activity for OER. Herein, we successfully prepared a series of scalable transition metal alloys with homogeneous size by a facial sol-gel self-propagating combustion method. Among them, the CoFe alloy displayed the highest oxygen evolution reaction (OER) activity, achieving an overpotential of 310 mV at 10 mA cm À 2 . After running OER tests for 48 h, the activity of CoFe alloy hardly decayed, indicating its outstanding stability. This work may make some contributions to the production of promising transition metal alloy catalysts and related energy equipment applications.

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“…1 To monitor NO X emission, lots of efforts have been made to develop high performance and compact solid electrolyte NO X type sensors with a stable, sensitive, selective and quick response. [2][3][4][5][6][7][8] Yttrium Stabilized Zirconia Y 4x Zr 1À4x O 2À2x (YSZ) has exceptionally high ionic conductivity but only at a temperature beyond 800 C. Its high operating temperature, however, can lead to many problems; it limits the selection of compatible electrodes and interconnect materials 9 and reduces the service life of the sensor. 10 Thus, it is urgent to search for an alternative oxide electrolyte material that can capture NO X at a mild temperature.…”

Section: Introductionmentioning

confidence: 99%

Influence of defect on the electrical and optical properties of A-site non-stoichiometry Ca_0.67La_0.22□_0.11Ti_(1−x)Cr_xO_3−δ perovskite

et al. 2019

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NO2-sensing properties of La0.65Sr0.35MnO3 synthesized by self-propagating combustion

Cited by 22 publications

References 34 publications

Review—Recent Advances in Electrochemical Impedance Spectroscopy Based Toxic Gas Sensors Using Semiconducting Metal Oxides

Review—Recent Advances in Electrochemical Impedance Spectroscopy Based Toxic Gas Sensors Using Semiconducting Metal Oxides

Scalable Synthesis of Bimetallic CoFe Alloy Nanoparticles for Efficient Oxygen Evolution Reaction

Influence of defect on the electrical and optical properties of A-site non-stoichiometry Ca_0.67La_0.22□_0.11Ti_(1−x)Cr_xO_3−δ perovskite

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NO2-sensing properties of La0.65Sr0.35MnO3 synthesized by self-propagating combustion

Cited by 22 publications

References 34 publications

Review—Recent Advances in Electrochemical Impedance Spectroscopy Based Toxic Gas Sensors Using Semiconducting Metal Oxides

Review—Recent Advances in Electrochemical Impedance Spectroscopy Based Toxic Gas Sensors Using Semiconducting Metal Oxides

Scalable Synthesis of Bimetallic CoFe Alloy Nanoparticles for Efficient Oxygen Evolution Reaction

Influence of defect on the electrical and optical properties of A-site non-stoichiometry Ca0.67La0.22□0.11Ti(1−x)CrxO3−δ perovskite

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Influence of defect on the electrical and optical properties of A-site non-stoichiometry Ca_0.67La_0.22□_0.11Ti_(1−x)Cr_xO_3−δ perovskite