ChemInform Abstract: Neodymium Dioxide Carbonate as a Sensing Layer for Chemoresistive CO<sub>2</sub> Sensing

A solid-state CO 2 sensor device using a metal-insulator-silicon carbide (MISiC) capacitor combined with a Li 2 CO 3 -BaCO 3 auxiliary layer was fabricated and tested for its basic sensing properties. The MISiC-based CO 2 sensor attached with the carbonate showed typical capacitance-voltage (C-V) properties in air at 400°C, and the sensor device responded well to changes in CO 2 concentration in air at 400°C. The sensor signals were directly proportional to the logarithm of CO 2 concentration. The results suggested that an electrochemical reaction of CO 2 occurred at the interface between the carbonate layer and the electrode, causing the applied voltage to shift in response to CO 2 .

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“…So far, potentiometric, [1][2][3][4][5][6] amperometric, 7,8 resistive, [9][10][11] and metal-insulator-semiconductor (MIS)-type 12,13 .…”

Section: Introductionmentioning

confidence: 99%

CO[sub 2] Sensor Combining an MISiC Capacitor and a Binary Carbonate

Inoue

Andersson

Yuasa

et al. 2011

Electrochem. Solid-State Lett.

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“…Such behavior of this nanocomposite-based sensor is due to the unique surface chemistry of Co 3 O 4 nanoparticles according to the previous report. 47 The maximum gas response for 0.5 vol % H 2 is about 1.24 at 175 °C. Therefore, the temperature of 175 °C was determined for further evaluation of the H 2 sensing performance of the CoO x /C-0.2-700 sample.…”

Section: ■ Results and Discussionmentioning

confidence: 94%

Controlled Synthesis of Ordered Mesoporous Carbon-Cobalt Oxide Nanocomposites with Large Mesopores and Graphitic Walls

et al. 2016

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Ordered mesoporous carbon (OMC)-metal oxide composites have attracted great interest due to their combination of high surface area, uniform pores, good conductivity of mesoporous carbon, and excellent photo-, electro-and chemical sensing properties of metal oxides. Herein, OMC-metal oxide composites with large mesopores and monodispersed CoO x nanoparticles were synthesized via a controllable multicomponent cooperative coassembly of ultrahigh-molecular-weight poly(ethylene oxide)-block-polystyrene (PEO-b-PS) copolymers, resol (soluble phenoic resin carbon precursor), and cobalt nitrate (cobalt oxide precursor). The obtained nanocomposites possess a face-centered cubic (fcc) mesoporous structure, large pore size (13.4−16.0 nm), high surface area (394−483 m 2 /g), large pore volume (0.41−0.48 cm 3 / g), and uniform CoO x nanoparticles with tunable diameters (6.4−16.7 nm). The long chain length of amphiphilic PEO-b-PS template molecules contributes to large mesopores and thick pore walls that allow a controllable nucleation of metal oxides and the formation of CoO x nanoparticles that are partially embedded and stabilized in the graphitic carbon walls and semiexposed in the mesopore channels, avoiding pore blockage and facilitating the mass transportation of guest molecules. The in situ loaded highly dispersed CoO x nanoparticles promote the graphitization of carbon frameworks during the pyrolysis procedure at relative lower temperatures (∼700 °C). Due to the strong synergistic effect between the graphitic OMC with large pores and uniform active p-type CoO x nanoparticles, the obtained mesoporous nanocomposite exhibit superior performance in hydrogen sensing.

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Preparation and microwave absorption characteristics of MoS2/Nd2O2CO3 composites

Chen

Shen

Zhang

2022

J Mater Sci: Mater Electron

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ChemInform Abstract: Neodymium Dioxide Carbonate as a Sensing Layer for Chemoresistive CO₂ Sensing

Cited by 3 publications

References 1 publication

CO[sub 2] Sensor Combining an MISiC Capacitor and a Binary Carbonate

CO[sub 2] Sensor Combining an MISiC Capacitor and a Binary Carbonate

Controlled Synthesis of Ordered Mesoporous Carbon-Cobalt Oxide Nanocomposites with Large Mesopores and Graphitic Walls

Preparation and microwave absorption characteristics of MoS2/Nd2O2CO3 composites

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ChemInform Abstract: Neodymium Dioxide Carbonate as a Sensing Layer for Chemoresistive CO2 Sensing

Cited by 3 publications

References 1 publication

CO[sub 2] Sensor Combining an MISiC Capacitor and a Binary Carbonate

CO[sub 2] Sensor Combining an MISiC Capacitor and a Binary Carbonate

Controlled Synthesis of Ordered Mesoporous Carbon-Cobalt Oxide Nanocomposites with Large Mesopores and Graphitic Walls

Preparation and microwave absorption characteristics of MoS2/Nd2O2CO3 composites

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Product

Resources

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ChemInform Abstract: Neodymium Dioxide Carbonate as a Sensing Layer for Chemoresistive CO₂ Sensing