Pyrochlore cerium stannate (Ce2Sn2O7) for highly sensitive NO2 gas sensing at room temperature

Ganesan, Mathankumar; Jayaraman, Venkatesan; Prabakaran, S.; Mohan, M. Krishna; Kim, Do‐Heyoung

doi:10.1016/j.apsusc.2023.157135

Cited by 10 publications

(1 citation statement)

References 49 publications

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“…Zhong et al reported the NO 2 sensing property of the defective pyrochlore system Pr 2 Zr 2 O 7 , and the sensing property has been enhanced by the strategy of A and B site substitution. Few other reports are available on NO 2 sensing by doped Pr 2 Zr 2 O7/Sm 2 Zr 2 O7/Gd 2 Zr 2 O 7 and undoped Ce 2 Sn 2 O 7 . – Zhong et al demonstrated Pr 2 Zr 2–x M x O 7+δ (M = Al, Ga, and In) solid-state electrolytes toward defect-mediated oxygen hopping pathways and enhanced NO 2 sensing properties. For ethanol gas sensing, Liu et al performed the strategy of controlled synthesis of a Pr 2 Sn 2 O 7 mesoporous nanosphere structure.…”

Section: Introductionmentioning

confidence: 99%

Luminescent Y₂Zr₂O₇ for Ultrasensitive Detection of Volatile Organic Compounds Driven by Oxygen Vacancies

Parayil,

Gupta,

Rohilla

et al. 2023

ACS Appl. Electron. Mater.

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Defect engineering is considered as one of the most efficient strategies to introduce different functionalities in materials suitable to achieve desired properties such as magnetism, catalysis, sensing, and optoelectronic applications. In this study, we have synthesized Y2Zr2O7 (YZO) by the gel combustion method, and subsequent annealing was carried out at different temperatures from 900 to 1300 °C for the engineering of defects. Electron spin resonance spectroscopy suggested the presence of singly ionized oxygen vacancies (F+-center) which resulted in a dual-band bluish-green emission. The color can be tuned from blue to green in moving from the nano to bulk sample in the domain of 900–1300 °C. Photoluminescence quantum yield increases substantially in the bulk samples owing to the lesser density of defect clusters and higher F+ centers. The particle size increases from nano (∼50 nm) to bulk (∼0.4 μm) domain, and surface defects reduce on annealing from 900 to 1300 °C. The pore size is in the mesoporous range, making them suitable for gas sensing purposes. The sensing abilities of nano YZO-900 and bulk YZO-1300 pyrochlore were assessed in terms of detecting volatile organic compounds (VOCs) such as ethanol, acetone, and benzene. The study revealed that the defects in the materials play a significant role in sensing capabilities compared to morphology. On comparisons with other VOC sensors, bulk YZO-1300 not only demonstrated excellent sensitivity and superior response and recovery time toward benzene, but they are equally capable of sensing other polar VOCs such as acetone and ethanol with great ease and lower limit of detection. Moreover, our materials have demonstrated the capability to work as rare-earth-free luminescent materials as well driven by oxygen vacancies.

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Section: Introductionmentioning

confidence: 99%

Luminescent Y₂Zr₂O₇ for Ultrasensitive Detection of Volatile Organic Compounds Driven by Oxygen Vacancies

Parayil,

Gupta,

Rohilla

et al. 2023

ACS Appl. Electron. Mater.

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Highly Sensitive and Selective Room Temperature NO2 Gas Sensor Based on 3D BiFeO3 − x Microflowers

Wang,

Jiang,

Zhuang

2024

Electron. Mater. Lett.

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High-Temperature resistant ethanol sensing enhanced by ZnO Nanoparticles/SiC nanowire heterojunctions

Huang,

Du,

et al. 2024

Applied Surface Science

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Pyrochlore cerium stannate (Ce2Sn2O7) for highly sensitive NO2 gas sensing at room temperature

Cited by 10 publications

References 49 publications

Luminescent Y₂Zr₂O₇ for Ultrasensitive Detection of Volatile Organic Compounds Driven by Oxygen Vacancies

Luminescent Y₂Zr₂O₇ for Ultrasensitive Detection of Volatile Organic Compounds Driven by Oxygen Vacancies

Highly Sensitive and Selective Room Temperature NO2 Gas Sensor Based on 3D BiFeO3 − x Microflowers

High-Temperature resistant ethanol sensing enhanced by ZnO Nanoparticles/SiC nanowire heterojunctions

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Pyrochlore cerium stannate (Ce2Sn2O7) for highly sensitive NO2 gas sensing at room temperature

Cited by 10 publications

References 49 publications

Luminescent Y2Zr2O7 for Ultrasensitive Detection of Volatile Organic Compounds Driven by Oxygen Vacancies

Luminescent Y2Zr2O7 for Ultrasensitive Detection of Volatile Organic Compounds Driven by Oxygen Vacancies

Highly Sensitive and Selective Room Temperature NO2 Gas Sensor Based on 3D BiFeO3 − x Microflowers

High-Temperature resistant ethanol sensing enhanced by ZnO Nanoparticles/SiC nanowire heterojunctions

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Product

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Luminescent Y₂Zr₂O₇ for Ultrasensitive Detection of Volatile Organic Compounds Driven by Oxygen Vacancies

Luminescent Y₂Zr₂O₇ for Ultrasensitive Detection of Volatile Organic Compounds Driven by Oxygen Vacancies