Novel synthesis of ternary nanocomposites with β-SiC fibers, SnO2, and In2O3 for atmospheric gas sensing under high temperature conditions

Otgonbayar, Zambaga; Joo, Young Jun; Cho, Kwang-Yeon; Park, Sang Yul; Park, Kwang Youl; Oh, Won-Chun

doi:10.1039/d2tc02604j

Cited by 4 publications

(2 citation statements)

References 35 publications

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“…Among them, In2O3 and SnO2 have been widely studied as MO semiconductors with wide bandgap energy and high stability for gas sensing applications [31,32]. The previous study reported CO2 and O2 gas-sensing experiments for β−SiC/SnO2/In2O3 [33]. Both ordinary room temperature (RT; 25 °C) and high temperature (HT; 600 °C) conditions were used to test the ability of the electrodes to detect gases.…”

Section: Introductionmentioning

confidence: 99%

Novel Synthesis of porous BN/β-SiC/SnO 2 /In 2 O 3 Quaternary Nanocomposites and its Gas Sensing Properties under Different Working Temperatures

Otgonbayar,

Joo,

Cho

et al. 2024

Preprint

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The novel quaternary nanocomposite was composed of porous boron nitride, β-SiC fibers, SnO2, and In2O3, and their successful combination led to effective and highly stable gas sensing. The physical and chemical properties of the nanocomposites were analyzed using analytical techniques such as XRD, SEM, TEM-HRTEM, BET, XPS, PL, and Raman techniques. Especially, the first-principles calculations were performed to evaluate the proportion of the states occupied by the system at each energy level. The gas sensing capabilities of the quaternary nanocomposites were evaluated using CO2 and O2 gas purging at various temperatures. The usefulness of the β-SiC fiber and previously studied β-SiC/In2O3/SnO2 was altered by the outstanding electronic conductivity and chemical activity of the pBN/β-SiC/SnO2/In2O3 quaternary nanocomposites. At room temperature, the pBN-105 NCs displayed high resistivity and robust response to O2 gas but a weak response to CO2 gas. The sensor exhibited a robust sensitivity to both CO2 and O2 gases at high temperatures. In every gas-sensing test, the predicted quaternary nanocomposites displayed a strong resistivity and low current density. The effective charge transfer and separation properties, as well as the electron density of the sensor layer of the quaternary nanocomposites, allowed for better sensing under a variety of high-temperature variations, whereas the addition of MOs and porous boron nitride increased the usability of the β-SiC fiber.

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Section: Introductionmentioning

confidence: 99%

Novel Synthesis of porous BN/β-SiC/SnO 2 /In 2 O 3 Quaternary Nanocomposites and its Gas Sensing Properties under Different Working Temperatures

Otgonbayar,

Joo,

Cho

et al. 2024

Preprint

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“…High-temperature assistance has proven to be an effective method for improving the NH 3 sensing performance of SiC fiber-based composites. − Some reports have shown that high-temperature assistance could substantially improve the recovery speed of metal oxide-SiC-based NH 3 gas sensors . The results of a mechanism study showed that high-temperature assistance and polymer base could change the number of surface-active centers, − which was the key to improving the gas sensing performance of semiconductors at high temperature and polymer-based affinity . However, to recombine in pure metal oxides, implemented temperature is an easy step, which results in a limited number of NH 4 + and O 2 – and contributes to the gas sensing reaction.…”

Section: Introductionmentioning

confidence: 99%

Comparative and Efficient Ammonia Gas Sensing Study with Self-assembly-Synthesized Metal Oxide-SiC Fiber-Based Mesoporous SiO₂ Composites

et al. 2022

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Self-assembled-assisted ternary nanocomposite In2O3–SiC, CuO2–SiC, and MnO2–SiC semiconductors were mixed with SiO2 to enable gas sensing using cyclic voltammetry. The results of TEM (transm In2O3–SiC–SiO2 ion electron microscopy), X-ray diffraction spectroscopy, and Raman spectra analysis affirm the closeness of few layers between SiO2 and SiC in In2O3–SiC, MnO2–SiC, and CuO2–SiC. Among the electrochemical impedance spectra curves of the nanocomposites, none of the samples had a semicircle profile, which indicates the existence of a higher charge-transfer resistivity behavior between the electrolyte and the sample electrode with charge carrier and transport effects, which is related to the well-developed porous structure of synthesized composites. CuO2–SiC–SiO2 and MnO2–SiC–SiO2 showed high resistivity and a quite significant response for NH3 gas at room temperature. While there was a response for NH3 gas for In2O3–SiC–SiO2, the sensor showed a low response for the gas. From the sensing test, correspondences between the chemical structure of the sensor and the molecular structure of the gases have been found. The surface reactions between the sensor surface and the gas with a pore structure, along with the electron receiver/donor phase are observed from the results of gas sensor tests, and all factors are determining the precise state. Finally, the adsorption of NH3 molecules and the alteration of the electronic resistance of In2O3–SiC–SiO2, MnO2–SiC–SiO2, and CuO2–SiC–SiO2 were presented that include various thicknesses of charge to represent which are achieved by the connection with the substrates and the particles.

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Mesoporous effects on SiC fiber matrix combined with active metal oxides for atmospheric gas sensing under high temperature conditions

Otgonbayar

Joo

Cho

et al. 2023

Sensors and Actuators A: Physical

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Novel synthesis of ternary nanocomposites with β-SiC fibers, SnO₂, and In₂O₃ for atmospheric gas sensing under high temperature conditions

Abstract: Gas sensing test was performed by using the SCISO nanocomposite under various temperature conditions. The gas sensing test indicated that the introduction of SnO2 onto β−SiC−In2O3 nanocomposite successfully improved the...

Cited by 4 publications

References 35 publications

Novel Synthesis of porous BN/β-SiC/SnO 2 /In 2 O 3 Quaternary Nanocomposites and its Gas Sensing Properties under Different Working Temperatures

Novel Synthesis of porous BN/β-SiC/SnO 2 /In 2 O 3 Quaternary Nanocomposites and its Gas Sensing Properties under Different Working Temperatures

Comparative and Efficient Ammonia Gas Sensing Study with Self-assembly-Synthesized Metal Oxide-SiC Fiber-Based Mesoporous SiO₂ Composites

Mesoporous effects on SiC fiber matrix combined with active metal oxides for atmospheric gas sensing under high temperature conditions

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Novel synthesis of ternary nanocomposites with β-SiC fibers, SnO2, and In2O3 for atmospheric gas sensing under high temperature conditions

Abstract: Gas sensing test was performed by using the SCISO nanocomposite under various temperature conditions. The gas sensing test indicated that the introduction of SnO2 onto β−SiC−In2O3 nanocomposite successfully improved the...

Cited by 4 publications

References 35 publications

Novel Synthesis of porous BN/β-SiC/SnO 2 /In 2 O 3 Quaternary Nanocomposites and its Gas Sensing Properties under Different Working Temperatures

Novel Synthesis of porous BN/β-SiC/SnO 2 /In 2 O 3 Quaternary Nanocomposites and its Gas Sensing Properties under Different Working Temperatures

Comparative and Efficient Ammonia Gas Sensing Study with Self-assembly-Synthesized Metal Oxide-SiC Fiber-Based Mesoporous SiO2 Composites

Mesoporous effects on SiC fiber matrix combined with active metal oxides for atmospheric gas sensing under high temperature conditions

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Novel synthesis of ternary nanocomposites with β-SiC fibers, SnO₂, and In₂O₃ for atmospheric gas sensing under high temperature conditions

Comparative and Efficient Ammonia Gas Sensing Study with Self-assembly-Synthesized Metal Oxide-SiC Fiber-Based Mesoporous SiO₂ Composites